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: Modified Mercalli Intensity contours for the earthquake on January 11, 1883 at 0712 GMT Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Denver Publisher: US Geological Survey Online_Linkage: Description: Abstract: This cover is one of many that contain isoseismals of historic Central U.S. earthquakes. Margaret Hopper provided these isoseismals after reexamining the intensity data and re-calculating the isoseismal contours. She generated isoseismal contours for each earthquake using computer contouring software, but adjusted positions of contours where, in her expert opinion, computer software had erroneously located them. Some isoseismals were unchanged from original authors and are referenced in her unpublished manuscript. Most isoseismals were changed to incorporate new information and to conform to common, modern, standards. The values for intensity reported in these data are consistent with the Modified Mercali Intensity (MMI) scale. This scale is useful for describing damage from earthquakes. For historical earthquakes, these values are gathered in the 4 - 10 range. In the central U.S., historical earthquakes have caused damage in the 4 - 8 range only. Intensity data are usually reported in Roman numerals, however Arabic numerals are used for computer accessibility. This cover contains data for the earthquake on January 11, 1883 at 0712 GMT; mag 4.6. Purpose: The data was generated to help in understanding the seismotectonic hazards in the vicinity of the lower Wabash Valley. This data complements similar data collected in the vicinity of New Madrid, MO (US Geological Survey Open-File Report 95-0574, available via ftp at ) Supplemental_Information: Procedures_Used: Images of the isoseismals were created by Hopper using FileMakerPro on a Macintosh computer. She provided hard-copy output on 8" x 10" paper. Contours were then digitized on an Altek digitizer table using Arc/Info. Arcs were edited and smoothed using grain, spline, and generalize. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 18830111 Ending_Date: 19930000 Status: Progress: complete Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -92.77226257 East_Bounding_Coordinate: -75.65071106 North_Bounding_Coordinate: 42.45173264 South_Bounding_Coordinate: 29.72721672 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: earthquakes intensity Place: Place_Keyword_Thesaurus: None Place_Keyword: Wabash Valley Use_Constraints: The original source figure was prepared at page-size scale, or roughly at 1:10,000,000. The user should exercise caution in assuming too high a quality in location of contours. The contours are best considered approximate. no liability expressed or implied. 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 Security_Information: Security_Classification_System: None Security_Classification: Unclassified Security_Handling_Description: None Native_Data_Set_Environment: SunOS, 5.5.1, sun4u UNIX, ARC/INFO version 7.1.1 Cross_Reference: Citation_Information: Originator: Rhea, Susan, Wheeler, R.L., and Hopper, M.G. Publication_Date: 1996 Title: Map showing earthquake intensities 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-B 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: See Entity_Attribute_Information Quantitative_Attribute_Accuracy_Assessment: Attribute_Accuracy_Value: See Explanation Attribute_Accuracy_Explanation: Attribute_Accuracy: Logical_Consistency_Report: Point features present. Positional_Accuracy: Horizontal_Positional_Accuracy: Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 10 km Horizontal_Positional_Accuracy_Explanation: approximate width of line on figure used to digitize contours Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Hopper, Margaret Publication_Date: in prep 1996 Title: Atlas of Earthquake Damage in the Central US Geospatial_Data_Presentation_Form: digital Publication_Information: Publisher: U.S. Geological Survey Other_Citation_Details: written communication 1995 Online_Linkage: hopper@usgs.gov Source_Scale_Denominator: 10,000,000 Process_Step: Process_Description: see Procedures Source_Used_Citation_Abbreviation: None Process_Date: 19970716 Process_Time: 1528 Source_Produced_Citation_Abbreviation: None 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: 7 SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 47 SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 8 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: I188301.PAT Entity_Type_Definition: values for modified mercali intensity contours Entity_Type_Definition_Source: Margaret Hopper pers. commun., 1995 Attribute: Attribute_Label: - Attribute_Definition: values for modified mercali intensity contours Attribute_Definition_Source: Margaret Hopper pers. commun., 1995 Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: - Attribute: Attribute_Label: AREA Attribute_Definition: Area of poly/region in square coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Positive real numbers Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of poly/region in coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Positive real numbers Attribute: Attribute_Label: I188301# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Attribute: Attribute_Label: I188301-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Integer Attribute: Attribute_Label: INTENSITY Attribute_Definition: average of intensity values from felt reports Attribute_Definition_Source: Margaret Hopper, person. commun., 1995 Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 4-8 Overview_Description: Entity_and_Attribute_Overview: polygon attributes include a value for MMI. Entity_and_Attribute_Detail_Citation: Not Available 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: 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 Resource_Description: wabash data Distribution_Liability: no liability expressed or implied Custom_Order_Process: inquire about special distribution services Technical_Prerequisites: must have AI v703 or AV3 Available_Time_Period: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: present Ending_Date: open Metadata_Reference_Information: Metadata_Date: 19971002 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 Metadata_Time_Convention: Local Time Metadata_Security_Information: Metadata_Security_Classification_System: None Metadata_Security_Classification: Unclassified Metadata_Security_Handling_Description: None