Significant United States Earthquakes 1568 - 2004 Shapefile Metadata
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- Identification_Information:
-
- Citation:
-
- Citation_Information:
-
- Originator: U.S. Geological Survey
- Publication_Date: 200501
- Title: Significant United States Earthquakes, 1568-2004
- Publication_Information:
-
- Publication_Place: Reston, VA
- Publisher: National Atlas of the United States
- Online_Linkage:
-
<http://nationalatlas.gov/atlasftp.html?openChapters=chpgeol#chpgeol>
- Description:
-
- Abstract:
-
This map layer contains the locations and attributes of significant,
historic earthquakes that caused deaths, property damage, and geological
effects, or were otherwise experienced by populations in the United
States, Puerto Rico, and U.S. Virgin Islands. Included are earthquakes
located in the United States as well as some that occurred in adjacent
portions of Canada and Mexico. The main sources for the data are
Seismicity of the United States, 1568-1989 and the Preliminary
Determination of Epicenters for 1990 to January 2004. This is a
replacement for the June 1999 map layer.
- Purpose:
-
These data are intended for geographic display and analysis at the
national level, and for large regional areas. The data should be
displayed and analyzed at scales appropriate for 1:2,000,000-scale data.
No responsibility is assumed by the National Atlas of the United States
or the U.S. Geological Survey in the use of these data. This map layer is
intended for a mixed audience of specialists and non-specialists alike who
have a need for general, non-technical information about significant
United States earthquakes.
- Supplemental_Information:
-
Provided with the downloadable files is a text file,
quksigx_references.txt, which contains the reference information for
earthquake magnitudes listed in the data.
- Time_Period_of_Content:
-
- Time_Period_Information:
-
- Range_of_Dates/Times:
-
- Beginning_Date: 15680101
- Ending_Date: 20040131
- Currentness_Reference: Ground condition
- Status:
-
- Progress: Complete
- Maintenance_and_Update_Frequency: As needed
- Spatial_Domain:
-
- Bounding_Coordinates:
-
- West_Bounding_Coordinate: 143
- East_Bounding_Coordinate: -60
- North_Bounding_Coordinate: 65
- South_Bounding_Coordinate: 10
- Keywords:
-
- Theme:
-
- Theme_Keyword_Thesaurus: ISO 19115 Topic Category
- Theme_Keyword: environment
- Theme_Keyword: geoscientificInformation
- Theme:
-
- Theme_Keyword_Thesaurus: None
- Theme_Keyword: Earthquakes
- Theme_Keyword: Seismic events
- Theme_Keyword: Magnitude
- Theme_Keyword: Body wave magnitude
- Theme_Keyword: Surface wave magnitude
- Theme_Keyword: Modified Mercalli Intensity Scale
- Place:
-
- Place_Keyword_Thesaurus:
-
U.S. Department of Commerce, 1995, Countries, Dependencies, Areas of
Special Sovereignty, and Their Principal Administrative Divisions
(Federal Information Processing Standard 10-4): Washington, DC,
National Institute of Standards and Technology.
- Place_Keyword: United States
- Place_Keyword: Canada
- Place_Keyword: Mexico
- Place:
-
- Place_Keyword_Thesaurus: None
- Place_Keyword: USA
- Place:
-
- Place_Keyword_Thesaurus:
-
U.S. Department of Commerce, 1987, Codes for the Identification of the
States, the District of Columbia and the Outlying Areas of The United
States, and Associated Areas (Federal Processing Standard 5-2):
Washington, DC, National Institute of Standards and Technology.
- Place_Keyword: Alabama
- Place_Keyword: Alaska
- Place_Keyword: Arizona
- Place_Keyword: Arkansas
- Place_Keyword: California
- Place_Keyword: Colorado
- Place_Keyword: Connecticut
- Place_Keyword: Delaware
- Place_Keyword: District of Columbia
- Place_Keyword: Florida
- Place_Keyword: Georgia
- Place_Keyword: Hawaii
- Place_Keyword: Idaho
- Place_Keyword: Illinois
- Place_Keyword: Indiana
- Place_Keyword: Iowa
- Place_Keyword: Kansas
- Place_Keyword: Kentucky
- Place_Keyword: Louisiana
- Place_Keyword: Maine
- Place_Keyword: Maryland
- Place_Keyword: Massachusetts
- Place_Keyword: Michigan
- Place_Keyword: Minnesota
- Place_Keyword: Mississippi
- Place_Keyword: Missouri
- Place_Keyword: Montana
- Place_Keyword: Nebraska
- Place_Keyword: Nevada
- Place_Keyword: New Hampshire
- Place_Keyword: New Jersey
- Place_Keyword: New Mexico
- Place_Keyword: New York
- Place_Keyword: North Carolina
- Place_Keyword: North Dakota
- Place_Keyword: Ohio
- Place_Keyword: Oklahoma
- Place_Keyword: Oregon
- Place_Keyword: Pennsylvania
- Place_Keyword: Rhode Island
- Place_Keyword: South Carolina
- Place_Keyword: South Dakota
- Place_Keyword: Tennessee
- Place_Keyword: Texas
- Place_Keyword: Utah
- Place_Keyword: Vermont
- Place_Keyword: Virginia
- Place_Keyword: Washington
- Place_Keyword: West Virginia
- Place_Keyword: Wisconsin
- Place_Keyword: Wyoming
- Place_Keyword: Puerto Rico
- Place_Keyword: Virgin Islands
- Place_Keyword: U.S. Virgin Islands
- Place_Keyword: Guam
- Place_Keyword: Northern Mariana Islands
- Access_Constraints: None
- Use_Constraints:
-
None. Acknowledgment of the National Atlas of the United States of America
and (or) the U.S. Geological Survey would be appreciated in products derived
from these data.
- Point_of_Contact:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person: Margaret G. Hopper
- Contact_Organization: U.S. Geological Survey
- Contact_Address:
-
- Address_Type: Mailing address
- Address: MS966, Box 25046, Denver Federal Center
- City: Denver
- State_or_Province: CO
- Postal_Code: 80225-0046
- Country: USA
- Contact_Voice_Telephone: 303-273-8564
- Contact_Facsimile_Telephone: 303-273-8600
- Contact_Electronic_Mail_Address: [email protected]
- Data_Set_Credit:
-
The following U.S. Geological Survey scientists contributed to this
map layer: A. Tarr, M. Hopper, J. Dewey, M. McKeever, and N. Trevor.
- Data_Quality_Information:
-
- Attribute_Accuracy:
-
- Attribute_Accuracy_Report:
-
The attribute table was manually checked for unreasonable attribute values
for depth and magnitude.
- Logical_Consistency_Report:
-
No formal tests for logical consistency were performed on this map layer,
principally because the map layer contains attribute values that were
arrived at by either or both quantitative (i.e. instrumental) and
qualitative (i.e. historical) methods. Earthquakes that occurred prior to
the introduction of seismological instrumentation are known only from
written records, such as newspapers, books and journals, and diaries, which
often may provide contradictory information that has to be carefully
examined and weighed. As seismographs became more common in the early
1960's, the origin time and location were both more precisely and accurately
determined but the compilation and evaluation of intensity reports was, and
still is, a process that involves considerable subjectivity. As a result,
all attributes associated with a given earthquake should be considered
provisional and subject to further revision based on acquisition of new
information and use of new analytical methods.
- Completeness_Report:
-
This map layer contains information on significant, historical earthquakes
that caused deaths, property damage, geological effects, or that were
experienced by populations in the epicentral area, for the United States,
Puerto Rico, the U.S. Virgin Islands, Guam, and the Northern Mariana
Islands. These data are limited to the best estimates of earthquake
locations and to attributes such as magnitude and maximum intensity.
- Positional_Accuracy:
-
- Horizontal_Positional_Accuracy:
-
- Horizontal_Positional_Accuracy_Report:
-
100 meter is the nominal precision of the reported instrumentally
located coordinate values but accuracy is considerably less. Accuracy
depends upon numerous factors including imprecision of the velocity
model of the earth, uneven distribution of seismic stations, and
imprecisions in the computational algorithm. Following initial
proofreading of the input data file, a preliminary map of the locations
of the earthquakes was produced which was examined for gross errors in
spatial location.
- Vertical_Positional_Accuracy:
-
- Vertical_Positional_Accuracy_Report:
-
Although depths are reported to the nearest 1 kilometer, the accuracy is
considerably less owing to uncertainties in the velocity model of the
Earth, uneven distribution of seismic stations, and imprecisions in the
computational algorithm.
- Lineage:
-
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
-
- Originator: Stover, Carl W.
- Originator: Coffman, Jerry L.
- Publication_Date: 1993
- Title: Seismicity of the United States, 1568-1989 (Revised)
- Edition: 1
- Online_Linkage: <http://neic.usgs.gov/neis/epic/>
- Series_Information:
-
- Series_Name: Professional Paper
- Issue_Identification: 1527
- Publication_Information:
-
- Publication_Place: Washington, DC
- Publisher: U.S. Geological Survey
- Type_of_Source_Media: Paper
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
-
- Range_of_Dates/Times:
-
- Beginning_Date: 1568
- Ending_Date: 1989
- Source_Currentness_Reference: Ground condition
- Source_Citation_Abbreviation: Seismicity of the United States
- Source_Contribution:
-
Principal source of earthquake locations and attributes.
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
-
- Originator: U.S. Geological Survey
- Publication_Date: 200411
- Title: Preliminary Determination of Epicenters (PDE)
- Online_Linkage: <http://neic.usgs.gov/neis/epic/>
- Type_of_Source_Media: Online
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
-
- Range_of_Dates/Times:
-
- Beginning_Date: 1973
- Ending_Date: 20040131
- Source_Currentness_Reference: Ground condition
- Source_Citation_Abbreviation: PDE
- Source_Contribution:
-
Supplemental source of earthquake locations and attributes.
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
-
- Originator: J.L. Coffman (ed.)
- Originator: C.A. von Hake (ed.)
- Originator: C.W. Stover (ed.)
- Publication_Date: 1982
- Title: Earthquake History of the United States
- Publication_Information:
-
- Publication_Place: Boulder, CO
- Publisher:
-
National Oceanic and Atmospheric Administration and U.S.
Geological Survey
- Type_of_Source_Media: Paper
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
-
- Range_of_Dates/Times:
-
- Beginning_Date: 1638
- Ending_Date: 1980
- Source_Currentness_Reference: Ground condition
- Source_Citation_Abbreviation: EHUS1982
- Source_Contribution:
-
Supplemental source of earthquake locations and attributes.
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
-
- Originator: J.G. Tanner
- Originator: J.B. Shepherd
- Publication_Date: 1997
- Title:
-
Project catalogue and seismic hazard maps, Seismic hazard in Latin
America and the Caribbean
- Online_Linkage: <http://midas.uprm.edu>
- Type_of_Source_Media: Online
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
-
- Single_Date/Time:
-
- Calendar_Date: 1997
- Source_Currentness_Reference: Publication date
- Source_Citation_Abbreviation: MIDAS-IPGH
- Source_Contribution:
-
Supplemental source of earthquake locations and attributes.
- Process_Step:
-
- Process_Description:
-
Data for the years 1568 to 1989, from Seismicity of the United States,
were combined with Preliminary Determination of Epicenters data for 1990
to 2004. EHUS1982 and MIDAS-IPGH were used to compile information for
additional locations or for years not covered by the other sources. The
resulting text file was loaded into ArcView and converted to a
shapefile. Three records for Puerto Rico were dropped because they did
not include values for longitude and latitude.
- Source_Used_Citation_Abbreviation: Seismicity of the United States
- Source_Used_Citation_Abbreviation: PDE
- Source_Used_Citation_Abbreviation: EHUS1982
- Source_Used_Citation_Abbreviation: MIDAS-IPGH
- Process_Date: 200411
- Spatial_Data_Organization_Information:
-
- Indirect_Spatial_Reference:
-
U.S. Department of Commerce, 1987, Codes for the Identification of the
States, the District of Columbia and the Outlying Areas of The United
States, and Associated Areas (Federal Information Processing Standard 5-2):
Washington, DC, National Institute of Standards and Technology.
- Direct_Spatial_Reference_Method: Point
- Point_and_Vector_Object_Information:
-
- SDTS_Terms_Description:
-
- SDTS_Point_and_Vector_Object_Type: Point
- Point_and_Vector_Object_Count: 5351
- Spatial_Reference_Information:
-
- Horizontal_Coordinate_System_Definition:
-
- Geographic:
-
- Latitude_Resolution: 0.000278
- Longitude_Resolution: 0.000278
- Geographic_Coordinate_Units: Decimal degrees
- Geodetic_Model:
-
- Horizontal_Datum_Name: North American Datum of 1983
- Ellipsoid_Name: GRS1980
- Semi-major_Axis: 6378137.0
- Denominator_of_Flattening_Ratio: 298.257222
- Entity_and_Attribute_Information:
-
- Detailed_Description:
-
- Entity_Type:
-
- Entity_Type_Label:
-
Significant United States Earthquakes (described by Quksigx020.dbf)
- Entity_Type_Definition:
-
Earthquakes within or near to the United States that caused deaths,
property damage, or geological effects, or that were experienced by
populations in the epicentral area. These events occurred between 1568
and January 2004.
- Entity_Type_Definition_Source: National Atlas of the United States
- Attribute:
-
- Attribute_Label: Shape
- Attribute_Definition: The representation of the entity in the data.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: Point
- Enumerated_Domain_Value_Definition: 0-dimensional element
- Enumerated_Domain_Value_Definition_Source: ESRI GIS software
- Attribute:
-
- Attribute_Label: Quksigx020
- Attribute_Definition: Internal feature number.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: 1
- Range_Domain_Maximum: 5387
- Attribute:
-
- Attribute_Label: Quake_id
- Attribute_Definition: Internal feature number.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: 1
- Range_Domain_Maximum: 5390
- Attribute:
-
- Attribute_Label: Year
- Attribute_Definition: The year when the earthquake occurred.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: 1568
- Range_Domain_Maximum: 2004
- Attribute:
-
- Attribute_Label: Month
- Attribute_Definition: The month when the earthquake occurred.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: 1
- Range_Domain_Maximum: 12
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: -9999
- Enumerated_Domain_Value_Definition: The month of the event is unknown.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute:
-
- Attribute_Label: Day
- Attribute_Definition: The day when the earthquake occurred.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: 1
- Range_Domain_Maximum: 31
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: -9999
- Enumerated_Domain_Value_Definition: The day of the event is unknown.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute:
-
- Attribute_Label: Hour
- Attribute_Definition:
-
The GMT hour of the day when the earthquake occurred, on a 24-hour
clock.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: 0
- Range_Domain_Maximum: 23
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: -9999
- Enumerated_Domain_Value_Definition: The hour of the event is unknown.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute:
-
- Attribute_Label: Minute
- Attribute_Definition: The minute of the hour when the earthquake occurred.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: 0
- Range_Domain_Maximum: 59
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: -9999
- Enumerated_Domain_Value_Definition: The minute of the event is unknown.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute:
-
- Attribute_Label: Second
- Attribute_Definition: The second of the minute when the earthquake occurred.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: 0.010
- Range_Domain_Maximum: 59.970
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: -9999.000
- Enumerated_Domain_Value_Definition: The second of the event is unknown.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute:
-
- Attribute_Label: Location
- Attribute_Definition:
-
The name of the town, city, physical feature, or other describable
location near to the earthquake event.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: There is no predefined set of valid location names.
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: <Blank>
- Enumerated_Domain_Value_Definition: No location description is available.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute:
-
- Attribute_Label: Longitude
- Attribute_Definition: The longitude of earthquake's epicenter in decimal degrees.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: -179.990
- Range_Domain_Maximum: 180.000
- Attribute:
-
- Attribute_Label: Latitude
- Attribute_Definition: The latitude of earthquake's epicenter in decimal degrees.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: 12.686
- Range_Domain_Maximum: 68.689
- Attribute:
-
- Attribute_Label: Depth_km
- Attribute_Definition:
-
The depth of earthquake's focus in kilometers. A value of 0 may
indicate the depth is unknown.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: 0
- Range_Domain_Maximum: 274
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: -9999
- Enumerated_Domain_Value_Definition: The depth is unknown.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute:
-
- Attribute_Label: Mb_gs
- Attribute_Definition:
-
The body wave magnitude of the earthquake as reported by the U.S.
Geological Survey. A body wave is a seismic wave that travels through
the Earth's inner layers.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: 3.400
- Range_Domain_Maximum: 7.000
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: -9999.000
- Enumerated_Domain_Value_Definition: The body wave magnitude is unknown.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute:
-
- Attribute_Label: Ms_gs
- Attribute_Definition:
-
The surface wave magnitude of the earthquake as reported by the U.S.
Geological Survey. A surface wave is a seismic wave that travels along
the Earth's surface.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: 3.100
- Range_Domain_Maximum: 8.500
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: -9999.000
- Enumerated_Domain_Value_Definition: The surface wave magnitude is unknown.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute:
-
- Attribute_Label: Other_mag1
- Attribute_Definition:
-
The magnitude of the earthquake as reported by the source identified in
Ref1. The type of magnitude is described by the attribute Type1.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: 2.080
- Range_Domain_Maximum: 9.240
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: -9999.000
- Enumerated_Domain_Value_Definition: No additional magnitude measurement is available.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute:
-
- Attribute_Label: Type1
- Attribute_Definition:
-
The type of magnitude recorded in the attribute Other_mag1, as defined
by the source identified in Ref1.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: FA
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag1 is an estimated body wave
magnitude. It is commonly computed from the felt area for
earthquakes which occurred before seismic instruments were in
general use.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: MD
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag1 is based on the duration or coda
length of the earthquake vibration.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: ML
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag1 is the local magnitude, which is
also known as the original "Richter" magnitude.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: MW
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag1 is the moment magnitude. It is
the measure of total energy released by an earthquake.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: Mn
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag1 is the local or regional
magnitude. It is the body wave magnitude using the Lg wave.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: Ms
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag1 is the surface wave magnitude. A
surface wave is a seismic wave that travels along the Earth's
surface.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: Mw
- Enumerated_Domain_Value_Definition: The magnitude given in Other_mag1 is the moment magnitude.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: UK
- Enumerated_Domain_Value_Definition:
-
The magnitude type for the magnitude given in Other_mag1 is unknown.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: mb
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag1 is the body wave magnitude. A
body wave is a seismic wave that travels through the Earth's inner
layers.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: mbLg
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag1 is the local or regional
magnitude. It is the body wave magnitude using the Lg wave.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: <Blank>
- Enumerated_Domain_Value_Definition:
-
The type of magnitude given in Other_mag1 is unknown. The value
came from Coffman, Jerry L., and von Hake, Carl A., 1973,
Earthquake History of the United States: U.S. Dept. of Commerce,
National Oceanic and Atmospheric Administration, Publication 41-1,
Revised Edition (Through 1970).
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute:
-
- Attribute_Label: Ref1
- Attribute_Definition:
-
A code identifying the source for the magnitude given in Other_mag1.
The list of sources is provided in the text file quksigx_references.txt.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: There is no predefined set of valid reference codes.
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: <Blank>
- Enumerated_Domain_Value_Definition: No reference information is available.
- Enumerated_Domain_Value_Definition_Source:
-
National Atlas of the United States
- Attribute:
-
- Attribute_Label: Other_mag2
- Attribute_Definition:
-
The magnitude of the earthquake as reported by the source identified in
Ref2. The type of magnitude is described by the attribute Type2.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: 2.900
- Range_Domain_Maximum: 8.400
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: -9999.000
- Enumerated_Domain_Value_Definition: No additional magnitude measurement is available.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute:
-
- Attribute_Label: Type2
- Attribute_Definition:
-
The type of magnitude recorded in the attribute Other_mag2, as defined
by the source identified in Ref2.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: FA
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag2 is an estimated body wave
magnitude. It is commonly computed from the felt area for
earthquakes which occurred before seismic instruments were in
general use.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: MD
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag2 is based on the duration or coda
length of the earthquake vibration.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: ME
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag2 is the energy magnitude which is
the radiated energy of the earthquake.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: ML
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag2 is the local magnitude, which is
also known as the original "Richter" magnitude.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: MW
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag2 is the moment magnitude. It is
the measure of total energy released by an earthquake.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: Mn
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag2 is the local or regional
magnitude. It is the body wave magnitude using the Lg wave.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: Ms
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag2 is the surface wave magnitude. A
surface wave is a seismic wave that travels along the Earth's
surface.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: Mw
- Enumerated_Domain_Value_Definition: The magnitude given in Other_mag2 is the moment magnitude.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: UK
- Enumerated_Domain_Value_Definition:
-
The magnitude type for the magnitude given in Other_mag2 is unknown.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: mb
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag2 is the body wave magnitude. A body
wave is a seismic wave that travels through the Earth's inner
layers.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: mbLg
- Enumerated_Domain_Value_Definition:
-
The magnitude given in Other_mag2 is the local or regional
magnitude. It is the body wave magnitude using the Lg wave.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: <Blank>
- Enumerated_Domain_Value_Definition:
-
The type of magnitude given in Other_mag2 is unknown. The value
came from Coffman, Jerry L., and von Hake, Carl A., 1973,
Earthquake History of the United States: U.S. Dept. of Commerce,
National Oceanic and Atmospheric Administration, Publication 41-1,
Revised Edition (Through 1970).
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute:
-
- Attribute_Label: Ref2
- Attribute_Definition:
-
A code identifying the source for the magnitude given in Other_mag2.
The list of sources is provided in the text file quksigx_references.txt.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: There is no predefined set of valid references.
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: <Blank>
- Enumerated_Domain_Value_Definition: No reference information is available
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute:
-
- Attribute_Label: Mmio
- Attribute_Definition:
-
Modified Mercalli Intensity (MMI), where the integer value represents
the Roman numeral designation of the MMI intensity.
- Attribute_Definition_Source: U.S. Geological Survey
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: F
- Enumerated_Domain_Value_Definition:
-
The earthquake was felt but no Modified Mercalli Intensity was
assigned.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 2
- Enumerated_Domain_Value_Definition:
-
An earthquake felt only by a few persons at rest, especially on
upper floors of buildings. Delicately suspended objects may swing.
- Enumerated_Domain_Value_Definition_Source: <http://neic.usgs.gov/neis/epic/mm_scale.html>
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 3
- Enumerated_Domain_Value_Definition:
-
An earthquake felt quite noticeably by persons indoors, especially
on upper floors of buildings. Many people do not recognize it as an
earthquake. Standing motor cars may rock slightly. Vibration
similar to the passing of a truck. Duration estimated in some
cases.
- Enumerated_Domain_Value_Definition_Source: <http://neic.usgs.gov/neis/epic/mm_scale.html>
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 4
- Enumerated_Domain_Value_Definition:
-
An earthquake felt indoors by many, outdoors by few during the day.
At night, some awakened. Dishes, windows, doors disturbed; walls
make cracking sound. Sensation like heavy truck striking building.
Standing motor cars rocked noticeably.
- Enumerated_Domain_Value_Definition_Source: <http://neic.usgs.gov/neis/epic/mm_scale.html>
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 5
- Enumerated_Domain_Value_Definition:
-
An earthquake felt by nearly everyone; many awakened. Some dishes,
windows broken. Unstable objects overturned. Pendulum clocks may
stop.
- Enumerated_Domain_Value_Definition_Source: <http://neic.usgs.gov/neis/epic/mm_scale.html>
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 6
- Enumerated_Domain_Value_Definition:
-
An earthquake felt by all; many frightened. Some heavy furniture
moved; a few instances of fallen plaster. Damage slight.
- Enumerated_Domain_Value_Definition_Source: <http://neic.usgs.gov/neis/epic/mm_scale.html>
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 7
- Enumerated_Domain_Value_Definition:
-
An earthquake causing negligible damage in buildings of good design
and construction; slight to moderate in well-built ordinary
structures; considerable damage in poorly built or badly designed
structures; some chimneys broken. Noticed by persons driving motor
cars.
- Enumerated_Domain_Value_Definition_Source: <http://neic.usgs.gov/neis/epic/mm_scale.html>
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 8
- Enumerated_Domain_Value_Definition:
-
An earthquake causing slight damage in specially designed
structures; considerable in ordinary substantial buildings with
partial collapse. Damage great in poorly built structures. Fall of
chimneys, factory stacks, columns, monuments, walls. Heavy
furniture overturned.
- Enumerated_Domain_Value_Definition_Source: <http://neic.usgs.gov/neis/epic/mm_scale.html>
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 9
- Enumerated_Domain_Value_Definition:
-
An earthquake causing considerable damage in specially designed
structures; well-designed frame structures thrown out of plumb.
Damage great in substantial buildings, with partial collapse.
Buildings shifted off foundations.
- Enumerated_Domain_Value_Definition_Source: <http://neic.usgs.gov/neis/epic/mm_scale.html>
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 10
- Enumerated_Domain_Value_Definition:
-
An earthquaking causing destruction of some well-built wooden
structures; most masonry and frame structures destroyed with
foundations. Railroad rails bent.
- Enumerated_Domain_Value_Definition_Source: <http://neic.usgs.gov/neis/epic/mm_scale.html>
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 11
- Enumerated_Domain_Value_Definition:
-
An earthquake where few, if any (masonry) structures remain
standing. Bridges destroyed. Railroad rails bent greatly.
- Enumerated_Domain_Value_Definition_Source: <http://neic.usgs.gov/neis/epic/mm_scale.html>
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 12
- Enumerated_Domain_Value_Definition:
-
An earthquake where damage is total. Lines of sight and level
distorted. Objects thrown into the air.
- Enumerated_Domain_Value_Definition_Source: <http://neic.usgs.gov/neis/epic/mm_scale.html>
- Attribute:
-
- Attribute_Label: Felt_area
- Attribute_Definition:
-
The area, in square kilometers, in which the earthquake was felt.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Range_Domain:
-
- Range_Domain_Minimum: <1,000
- Range_Domain_Maximum: 5,000,000
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: <Blank>
- Enumerated_Domain_Value_Definition: The area in which the earthquake was felt is unknown.
- Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
- Attribute:
-
- Attribute_Label: Source
- Attribute_Definition: The primary source of the earthquake information.
- Attribute_Definition_Source: National Atlas of the United States
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: EHUS1982
- Enumerated_Domain_Value_Definition:
-
Coffman, J.L., von Hake, C.A., and Stover, C.W., 1982, Earthquake
History of the United States: U.S. National Oceanic and Atmospheric
Administration and U.S. Geological Survey, Publication No. 41-1,
revised edition, [through 1980], 258p.
- Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: MIDAS-IPGH
- Enumerated_Domain_Value_Definition:
-
Tanner, J.G. and Shepherd, J.B., 1997, Project catalogue and seismic
hazard maps, Seismic hazard in Latin America and the Caribbean:
Panamerican Institute of Geography and History, v. 1, 143 p.
- Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: PDE
- Enumerated_Domain_Value_Definition:
-
Preliminary Determination of Epicenters, a list of earthquakes
located by the National Earthquake Information Center of the U.S.
Geological Survey and its predecessors in the U.S. Coast and
Geodetic Survey, the National Oceanic Survey, and the Environmental
Research Laboratories of the Department of Commerce. The PDE is
comprised of final hypocenter and magnitude computations by the USGS
NEIC published in monthly lists several months after the events.
- Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: SUS
- Enumerated_Domain_Value_Definition:
-
Stover, Carl W., and Coffman, Jerry L., 1993a, Seismicity of the
United States, 1568-1989 (Revised): U.S. Geological Survey
Professional Paper 1527, 418 p.
- Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
- Distribution_Information:
-
- Distributor:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization: Earth Science Information Center, U.S. Geological Survey
- Contact_Address:
-
- Address_Type: Mailing address
- Address: 507 National Center
- City: Reston
- State_or_Province: VA
- Postal_Code: 20192
- Contact_Voice_Telephone: 1-888-ASK-USGS (1-888-275-8747)
- Contact_Voice_Telephone: 703-648-5920
- Contact_Instructions:
-
In addition to the address above there are other ESIC offices throughout
the country. A full list of these offices is at
<http://ask.usgs.gov/esic_index.html>.
- Distribution_Liability:
-
Although these data have been processed successfully on a computer system at
the U.S. Geological Survey, no warranty expressed or implied is made by the
U.S. Geological Survey regarding the utility of the data on any other
system, nor shall the act of distribution constitute any such warranty. No
responsibility is assumed by the U.S. Geological Survey in the use of these
data.
- Standard_Order_Process:
-
- Digital_Form:
-
- Digital_Transfer_Information:
-
- Format_Name: ESRI Shapefile
- Digital_Transfer_Option:
-
- Online_Option:
-
- Computer_Contact_Information:
-
- Network_Address:
-
- Network_Resource_Name:
-
<http://nationalatlas.gov/atlasftp.html?openChapters=chpgeol#chpgeol>
- Digital_Form:
-
- Digital_Transfer_Information:
-
- Format_Name: SDTS
- Digital_Transfer_Option:
-
- Online_Option:
-
- Computer_Contact_Information:
-
- Network_Address:
-
- Network_Resource_Name:
-
<http://nationalatlas.gov/atlasftp.html?openChapters=chpgeol#chpgeol>
- Fees:
-
There is no charge for the map layer.
- Metadata_Reference_Information:
-
- Metadata_Date: 20060620
- Metadata_Contact:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person: Gita Urban-Mathieux
- Contact_Organization: National Atlas of the United States
- Contact_Address:
-
- Address_Type: Mailing address
- Address: 12201 Sunrise Valley Dr
- Address: MS 561
- City: Reston
- State_or_Province: VA
- Postal_Code: 20192
- Contact_Voice_Telephone: 703-648-5175
- Contact_Electronic_Mail_Address: [email protected]
- Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
- Metadata_Standard_Version: FGDC-STD-001-1998
- Metadata_Security_Information:
-
- Metadata_Security_Classification_System: None
- Metadata_Security_Classification: Unclassified
- Metadata_Security_Handling_Description: None
<-- Download ArcGIS Shapefiles
<-- More Natural Disaster Shapefiles
<-- Significant United States Earthquakes Description and Download
See Also:
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