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National Earthquake Information Center World
Data Center for Seismology, Denver
- 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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