National Earthquake Information Center World Data Center for Seismology, Denver
- Identification
Information
- Data
Quality Information
- Spatial
Data Organization Information
- Spatial
Reference Information
- Entity
and Attribute Information
- Distribution
Information
- Metadata
Reference Information
- Identification Information:
- Citation:
- Citation_Information:
- Originator: U.S. Geological Survey (USGS)
- Publication_Date: 2003
- Title: Earthquakes
- Publication_Information:
- Publication_Place: Reston, Virginia
- Publisher: U.S. Geological Survey
-
- Description:
- Abstract:
- (PDE) Preliminary Determinations of Epicenters, Monthly Listing.
This list is the most complete computation of hypocenters and magnitudes done
by the USGS NEIC. It is normally produced a few months after the events occur.
The publication is called "Preliminary" because the "final"
computation of hypocenters for the world is considered to be the Bulletin of
the Internation Seismological Centre (ISC), which is produced about two years
after the earthquakes occur. The NEIC PDE program contributes about one-third
off all data used by the ISC.
- Purpose:
- The digital data sets are used to create electronic and hard copy maps that depict
various aspects of the nation. The data can be used to conduct geographic analysis on
national and large regional scales. The digital data will provide a basis from which
future revisions of the atlas can be derived.
- Supplemental_Information:
- Revisions: 1) 6/29/98 - Corrected ellipsoid name from WGS84 to GRS1980 and changed
flattening ratio.
- Time_Period_of_Content:
- Time_Period_Information:
- Single_Date/Time:
- Calendar_Date: 2003
- Currentness_Reference: publication date
-
- Status:
- Progress: Complete
- Maintenance_and_Update_Frequency: Irregular
-
- Spatial_Domain:
- Bounding_Coordinates:
- West_Bounding_Coordinate: -180.0
- East_Bounding_Coordinate: 180.0
- North_Bounding_Coordinate: 90.0
- South_Bounding_Coordinate: -90.0
-
- Keywords:
- Theme:
- Theme_Keyword_Thesaurus: None
- Theme_Keyword: seismic
- Theme_Keyword: earthquakes
- 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 (FIPS) 10-4): Washington, D.C., National Institute of Standards and Technology.
- Place_Keyword: United States
-
- Access_Constraints: None
- Use_Constraints:
- None. Acknowledgment of the National Earthquake Information Center (NEIC) would be
appreciated in products derived from these data.
- Point_of_Contact:
- Contact_Information:
- Contact_Person_Primary:
- Contact_Person: Trent Hare
- Contact_Organization: U.S. Geological Survey
- Contact_Address:
- Address_Type: mailing address
- Address: 2255 North Gemini Drive
- City: Flagstaff
- State_or_Province: AZ
- Postal_Code: 86001
- Contact_Voice_Telephone: 928-556-7126
- Contact_Electronic_Mail_Address: thare@usgs.gov
-
- Data Quality Information:
- Logical_Consistency_Report:
- No tests for logical consistency were performed on this data set.
- Completeness_Report:
- This data set includes all seismic events in and near the United States. No tests for
completeness were performed on this data set.
- Lineage:
- Source_Information:
- Source_Citation:
- Citation_Information:
- Originator:
- National Earthquake Information Center (NEIC), USGS-Geologic Division
- Publication_Date: 2003
- Title: Earthquake data base
- Publication_Information:
- Publication_Place: Golden, CO
- Publisher: USGS
- Type_of_Source_Media: online
- Source_Time_Period_of_Content:
- Time_Period_Information:
- Range_of_Dates/Times:
- Beginning_Date: 1973
- Ending_Date: Mar 2003
- Source_Currentness_Reference: publication date
- Source_Citation_Abbreviation: n/a
- Source_Contribution: spatial and attribute information
- Process_Step:
- Process_Description:
- The data were extracted from the NEIC Earthquake Search WWW site at: <http://wwwneic.cr.usgs.gov/neis/epic/epic.html.>
The data were then loaded into an database file. Latitude and Longitude values were
written to an external file point shapefile.
- Process_Date: 2003
-
- Spatial Data Organization Information:
- Direct_Spatial_Reference_Method: Vector
- Point_and_Vector_Object_Information:
- SDTS_Terms_Description:
- SDTS_Point_and_Vector_Object_Type: Point
- Point_and_Vector_Object_Count: 347070
-
- Spatial Reference Information:
- Horizontal_Coordinate_System_Definition:
- Geographic:
- Latitude_Resolution: 0.01
- Longitude_Resolution: 0.01
- Geographic_Coordinate_Units: Decimal Degrees
- Geodetic_Model:
- Horizontal_Datum_Name: North American Datum of 1983
- Ellipsoid_Name: GRS1980
- Semi-major_Axis: 6378137
- Denominator_of_Flattening_Ratio: 298.257222
-
- Entity and Attribute Information:
- Detailed_Description:
- Entity_Type:
- Entity_Type_Label: quakes_pde1973_mar2003.dbf
- Entity_Type_Definition: Point attribute table
- Entity_Type_Definition_Source: ArcView 3.x
- Attribute_Label: SOURCE
- Attribute_Definition: Contributing source of earthquake data
- Attribute_Definition_Source: NEIC
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value:
- PDE = Contributed by USGS NEIC, Preliminary Determination of Epicenters - Monthly
Listing
- Enumerated_Domain_Value_Definition:
- Contributed by USGS NEIC, Preliminary Determination of Epicenters - Monthly Listing
- Enumerated_Domain_Value_Definition_Source: NEIC
- Attribute:
- Attribute_Label: YEAR
- Attribute_Definition: Year of the event
- Attribute_Definition_Source: NEIC
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value: 1973-2003
- Enumerated_Domain_Value_Definition: n/a
- Enumerated_Domain_Value_Definition_Source: NEIC
- Attribute:
- Attribute_Label: MONTH
- Attribute_Definition: Month of the event
- Attribute_Definition_Source: NEIC
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value: 1-12
- Enumerated_Domain_Value_Definition: n/a
- Enumerated_Domain_Value_Definition_Source: n/a
- Attribute:
- Attribute_Label: DAY
- Attribute_Definition: Day of the event
- Attribute_Definition_Source: NEIC
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value: 1-31
- Enumerated_Domain_Value_Definition: n/a
- Enumerated_Domain_Value_Definition_Source: n/a
- Attribute:
- Attribute_Label: ORIGIN_TIME
- Attribute_Definition:
- Time of the event in Universal Time Coordinated (UTC) in hours, minutes, seconds, and
decimal seconds expressed as a single real number.
- Attribute_Definition_Source: NEIC
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value: 000000.0 - 235959.9
- Enumerated_Domain_Value_Definition: n/a
- Enumerated_Domain_Value_Definition_Source: n/a
- Attribute_Units_of_Measure: decimal degrees
- Attribute:
- Attribute_Label: LAT
- Attribute_Definition: Latitude of earthquake
- Attribute_Definition_Source: NEIC
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value: 0-90
- Enumerated_Domain_Value_Definition: n/a
- Enumerated_Domain_Value_Definition_Source: n/a
- Attribute_Units_of_Measure: decimal degrees
- Attribute:
- Attribute_Label: LON
- Attribute_Definition: Longitude of earthquake
- Attribute_Definition_Source: NEIC
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value: -180 to 0 and 155 to 180
- Enumerated_Domain_Value_Definition: n/a
- Enumerated_Domain_Value_Definition_Source: n/a
- Attribute:
- Attribute_Label: DEPTH
- Attribute_Definition: Depth of earthquake in kilometers
- Attribute_Definition_Source: NEIC
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum: 0
- Range_Domain_Maximum: 634
- Attribute_Units_of_Measure: Kilometers (rounded up to nearest)
- Attribute:
- Attribute_Label: MAGNITUDE
- Attribute_Definition:
- Magnitude of the earthquake. It is a logarithmic measure of the "size" of an
earthquake. Commonly referred to as the "Richter scale".
- Attribute_Definition_Source: NEIC
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum: 4.0
- Range_Domain_Maximum: 8.10
- Distribution Information:
- Distributor:
- Contact_Information:
- Contact_Person_Primary:
- Contact_Person: Trent Hare
- Contact_Organization: U.S. Geological Survey
- Contact_Address:
- Address_Type: mailing address
- Address: 2255 North Gemini Drive
- City: Flagstaff
- State_or_Province: AZ
- Postal_Code: 86001
- Contact_Voice_Telephone: 928-556-7126
- Contact_Electronic_Mail_Address: thare@usgs.gov
-
- 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 USGS regarding the
utility of the data on any other system, nor shall the act of distribution constitute any
such warranty.
- Metadata Reference Information:
- Metadata_Date: 20030314
- Metadata_Contact:
- Contact_Information:
- Contact_Person_Primary:
- Contact_Person: Trent Hare
- Contact_Organization: U.S. Geological Survey
- Contact_Address:
- Address_Type: mailing address
- Address: 2255 North Gemini Drive
- City: Flagstazz
- State_or_Province: AZ
- Postal_Code: 86001
- Contact_Voice_Telephone: 928-556-7126
- Contact_Electronic_Mail_Address: thare@usgs.gov
- Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
- Metadata_Standard_Version: 19940608
- Metadata_Security_Information:
- Metadata_Security_Classification_System: None
- Metadata_Security_Classification: Unclassified
- Metadata_Security_Handling_Description: None
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