Metadata: Identification_Information: Citation: Citation_Information: Originator: Rhea, Susan Publication_Date: 1997 Title: Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Instrumental earthquake locations Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 97-0681 Publication_Information: Publication_Place: Denver,CO Publisher: U.S. Geological Survey Online_Linkage: Description: Abstract: This cover contains the catalog of earthquake locations, within the project boundary, recorded by the Saint Louis University and Memphis State University seismic networks from July 1974 through December 1995. Purpose: The data were generated to help in understanding the seismotectonic hazards in the vicinity of the lower Wabash Valley. These data complement similar data collected in the vicinity of New Madrid, MO (US Geological Survey Open-File Report 95-0574, available via ftp at ) Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1975.05 Ending_Date: 1995.12 Currentness_Reference: data are cuurent as of December, 1995 Status: Progress: complete Maintenance_and_Update_Frequency: none planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -104.05999756 East_Bounding_Coordinate: -74.54499817 North_Bounding_Coordinate: 44.37400055 South_Bounding_Coordinate: 29.72699928 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: instrumental earthquakes Place: Place_Keyword_Thesaurus: None Place_Keyword: Wabash Valley Access_Constraints: none Use_Constraints: none Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Susan Rhea Contact_Organization: US Geological Survey Contact_Position: Geophysicist Contact_Address: Address_Type: mailing address Address: MS966, Box 25046, Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-273-8639 Contact_Facsimile_Telephone: 303-273-8600 Contact_Electronic_Mail_Address: rhea@usgs.gov Contact_Instructions: email is the best way to make contact Data_Set_Credit: staff at Saint Louis Seismic Observatory, Saint Louis University Native_Data_Set_Environment: SunOS, 5.5.1, sun4u UNIX, ARC/INFO version 7.1.1 Cross_Reference: Citation_Information: Originator: Rhea, Susan, and Wheeler, R.L. Publication_Date: 1996 Title: Map showing seismicity in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Investigations Map Issue_Identification: I-Map 2583-A Publication_Information: Publication_Place: Denver, CO Publisher: U.S. Geological Survey Other_Citation_Details: pamphlet accompanies map Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Quality is given explicitly in the attribute values ERH, ERZ, QH, and QZ. Logical_Consistency_Report: Point features present. Completeness_Report: All earthquakes included in the Saint Louis Bulletin located within the project boundary are in the dataset. Positional_Accuracy: Horizontal_Positional_Accuracy: Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: variable Horizontal_Positional_Accuracy_Explanation: Resolution as reported in attribute ERH Vertical_Positional_Accuracy: Quantitative_Vertical_Positional_Accuracy_Assessment: Vertical_Positional_Accuracy_Value: variable Vertical_Positional_Accuracy_Explanation: resolution as reported in attribute ERZ Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Hermann, Robert and Whittington, Melanie Publication_Date: annual Title: Central Mississippi Valley Earthquake Bulletin Geospatial_Data_Presentation_Form: digital list Publication_Information: Publication_Place: St. Loius, MO Publisher: Saint Louis University Online_Linkage: Type_of_Source_Media: electronic file transfer Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1974.05 Ending_Date: 1995.12 Source_Contribution: digital listing of earthquakes received via ftp, Rhea converted to arc/info coverage Process_Step: Process_Description: Catalog emailed from staff at St. Louis Seismic Observatory and converted to ARC/INFO coverage. Additional earthquake locations included annually or as available. Data projected into Albers Equal Area projection and clipped to project boundary. Process_Date: 19951025 Spatial_Data_Organization_Information: 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: 170 SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 0 SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 0 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Geographic_Coordinate_Units: Decimal Degrees Geodetic_Model: Horizontal_Datum_Name: Unknown Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: EQKS.PAT Entity_Type_Definition: earthquake location data Entity_Type_Definition_Source: Rhea Attribute: Attribute_Label: DATE Attribute_Definition: YYMMDD of earthquake, Universal Time Coordinated Attribute_Definition_Source: Saint Louis University Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 740729 Range_Domain_Maximum: 940926 Attribute: Attribute_Label: TYPE Attribute_Definition: refers to central US velocity model used to locate earthquake Attribute_Definition_Source: Herrmann, see reference Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value: 1 Attribute: Attribute_Label: HR Attribute_Definition: origin time hour, Greenwich Universal Time Coordinated Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 23 Attribute_Units_of_Measure: hours Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: MIN Attribute_Definition: origin time minute Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 59 Attribute_Units_of_Measure: minutes Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: SEC Attribute_Definition: origin time seconds with partial seconds Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 59.84 Attribute_Units_of_Measure: seconds Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: LAT Attribute_Definition: location, latitude north Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 36.602 Range_Domain_Maximum: 38.996 Attribute_Units_of_Measure: degrees Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: LONG Attribute_Definition: location, longitude W Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -89.000 Range_Domain_Maximum: -87.028 Attribute_Units_of_Measure: degrees Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: DEPTH Attribute_Definition: location, depth in kilometers Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.6 Range_Domain_Maximum: 21.0 Attribute_Units_of_Measure: kilometers Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: DEPTAG Attribute_Definition: tag for free or fixed depth in location routine Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: (blank) Enumerated_Domain_Value_Definition: free depth in location routine Attribute: Attribute_Label: MAG Attribute_Definition: magnitude, computed from averaged displacement magnitudes at each station Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0 Range_Domain_Maximum: 5.2 Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: NSTA Attribute_Definition: number of stations used to determine earthquake location Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 94 Attribute: Attribute_Label: NPHASE Attribute_Definition: number of p- and s- phases used to determine earthquake location Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 94 Attribute: Attribute_Label: GAP Attribute_Definition: largest aperture between stations recording earthquake, in degrees Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 337 Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: DMIN Attribute_Definition: epicentral distance to closest station, in km Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 273 Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: RMS Attribute_Definition: Root Mean Square of travel-time residuals after location algorithm iterations Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.00 Range_Domain_Maximum: 1.80 Attribute_Units_of_Measure: seconds Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: ERH Attribute_Definition: standard error of horizontal location in km Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.00 Range_Domain_Maximum: 20.0 Attribute_Units_of_Measure: kilometers Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: ERZ Attribute_Definition: standard error of depth in km Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.00 Range_Domain_Maximum: 73.6 Attribute_Units_of_Measure: kilometers Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: QH Attribute_Definition: quality of horizontal location, based on evaluation of ERH, RMS, NSTA, and NPHAS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: U Enumerated_Domain_Value: a Enumerated_Domain_Value: b Enumerated_Domain_Value: c Enumerated_Domain_Value: d Enumerated_Domain_Value: n Enumerated_Domain_Value: u Attribute: Attribute_Label: QZ Attribute_Definition: quality of depth location, based on evaluation of ERZ, RMS, NSTA, and NPHASE Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: P Enumerated_Domain_Value: a Enumerated_Domain_Value: b Enumerated_Domain_Value: c Enumerated_Domain_Value: d Enumerated_Domain_Value: p Enumerated_Domain_Value: u Attribute: Attribute_Label: MOD Attribute_Definition: code for velocity model used to compute earthquake location Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: EMB Enumerated_Domain_Value_Definition: embayment Enumerated_Domain_Value: UPL Enumerated_Domain_Value_Definition: uplands Enumerated_Domain_Value: TST Enumerated_Domain_Value: S Enumerated_Domain_Value: s Enumerated_Domain_Value: (blank) Attribute: Attribute_Label: DFLAG Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: (blank) Enumerated_Domain_Value: D Attribute: Attribute_Label: MBLG3 Attribute_Definition: magnitude determined from Lg surface waves Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0 Range_Domain_Maximum: 0.0 Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Susan Rhea Contact_Organization: US Geological Survey Contact_Position: Geophysicist Contact_Address: Address_Type: mailing address Address: USGS Mail Stop 966 Box 25046, Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 303-273-8639 Contact_Facsimile_Telephone: 303-273-8600 Contact_Electronic_Mail_Address: rhea@usgs.gov Contact_Instructions: Email is the best way to make contact. Resource_Description: USGS Open-File Report 97-0681 Distribution_Liability: This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. Any use of trade names is for descriptive purposes only and does not imply endorsement by the USGS. Technical_Prerequisites: ARC/INFO version 7.0.3 or later or ArcView 3.0 or later Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE Format_Version_Number: 7.0.3 Format_Information_Content: Each coverage contains isoseismal data for one event (two for i187609) File_Decompression_Technique: Files may be compressed with gzip; use gzip -d or gunzip to uncompress. Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: ftp://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-97-0681/e00_files/eqks.e00 Online_Computer_and_Operating_System: Data General AViiON 6220 running DG/UX 5.4R3.10 (Unix) Fees: none Metadata_Reference_Information: Metadata_Date: 19980506 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Susan Rhea Contact_Organization: US Geological Survey Contact_Position: Geophysicist Contact_Address: Address_Type: mailing address Address: MS966, Box 25046, Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-273-8639 Contact_Facsimile_Telephone: 303-273-8600 Contact_Electronic_Mail_Address: rhea@usgs.gov Contact_Instructions: email is the best way to make contact Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: 19940608