Table of Contents Identification_Information Abstract Purpose Supplemental Information Data_Quality_Information Spatial_Data_Organization_Information Entity_and_Attribute_Information Detailed Description Overview Distribution_Information Metadata_Reference_Section Identification_Information Citation_Information Originator: Dziewonski, A.M. and J.H. Woodhouse Publication_Date: 1983, pp 3247-3271 Title: An experiment in the systematic study of global seismicity: centroid-moment ... Series_Information Series_Name: J. Geophys. Res. Issue_Identification: 88 Publication_Information Publication_Place: Washington, DC Publisher: AGU Other_Citation_Details: see reference list in Narrtive Online_Linkage: http://www.seismology.harvard.edu/projects/CMT/ Description Abstract The dataset contains location, time, and focal mechanism solutions for earthquakes 01/01/1977-08/31/2000 with surface wave magnitude greater than or equal to about 5.5 Solutions are found with the Harvard centroid-moment tensor (CMT) method, which uses long period surface and body wave modeling to estimate the optimum focal mechanism. Purpose Supplemental_Information Procedures_Used The procedure for finding centroid-moment tensor solutions is described in Dziewonski and Woodhouse, 1983a. Attribute descriptions are in Dziewonski et al., 1987a. This ArcInfo coverage was made from the published CMT solutions (Cornell GIS Group, 1998). Revisions 1.0 Reviews_Applied_to_Data Data are published quarterly in _Physics of the Earth and Planetary Interiors_. Related_Spatial_and_Tabular_Data_Sets References_Cited Aki, Keiiti and Paul G. Richards, 1980, Quantitative Seismology: theory and methods, San Francisco: W.H. Freeman. Cornell University GIS group, 1998, CMT Seismicity Catalog and Focal Mechanisms (= this ArcInfo coverage), Ithaca, New York: Cornell University GIS group. http://atlas.geo.cornell.edu Dziewonski, Adam, Goran Ekstrom, Natasha Maternovskaya, and Meredith Nettles, Harvard Geology: Centroid-Moment Tensor Project http://www.seismology.harvard.edu/projects/CMT/ Dziewonski, A.M., T.-A. Chou and J.H. Woodhouse, 1981, Determination of earthquake source parameters from waveform data for studies of global and regional seismicity, Journal of Geophysical Research 86: 2825-2852. Dziewonski, A.M. and J.H. Woodhouse, 1983a, Studies of the seismic source using normal-mode theory, in Kanamori, H. and E. Boschi, eds., _Earthquakes: observation, theory, and interpretation: notes from the International School of Physics "Enrico Fermi" (1982: Varenna, Italy)_, North-Holland Publ. Co., Amsterdam, pp 45-137. Dziewonski, A.M. and J.H. Woodhouse, 1983b, Experiment in Systematic Study of Global Seismicity: Centroid-Moment Tensor Solutions for Earthquakes 1981, Journal of Geophysical Research 88: 3247-3271. Dziewonski, A.M., G. Ekstrom, J.E. Franzen, and J.H. Woodhouse, 1983c, Global seismicity of 1982: Centroid-moment tensor solutions for 308 earthquakes, Physics of the Earth and Planetary Interiors 33: 76-90. Dziewonski, A.M., G. Ekstrom, J.E. Franzen, and J.H. Woodhouse, 1987a, Centroid-moment tensor solutions for January-March 1986, _Physics of the Earth and Planetary Interiors_ 45:1-10. Dziewonski, A.M., G. Ekstrom, J.E. Franzen, and J.H. Woodhouse, 1987b, Global seismicity of 1977: Centroid-moment tensor solutions for 471 earthquakes, Physics of the Earth and Planetary Interiors 45: 11-36. Dziewonski, A.M., G. Ekstrom, J.E. Franzen, and J.H. Woodhouse, 1987c, Global Seismicity of 1978: Centroid-moment tensor solutions for 512 earthquakes, Physics of the Earth and Planetary Interiors 46: 316-342. Dziewonski, A.M., G. Ekstrom, J.E. Franzen, and J.H. Woodhouse, 1987d, Global seismicity of 1979: Centroid-moment tensor solutions for 524 earthquakes, Physics of the Earth and Planetary Interiors 48: 18-46. Dziewonski, A.M., G. Ekstrom, J.E. Franzen, and J.H. Woodhouse, 1988, Global seismicity of 1980: Centroid-moment tensor solutions for 515 earthquakes, Physics of the Earth and Planetary Interiors 50: 127-154. Dziewonski, A.M., G. Ekstrom, J.E. Franzen, and J.H. Woodhouse, 1988, Global seismicity of 1981: Centroid-moment tensor solutions for 542 earthquakes, Physics of the Earth and Planetary Interiors 50: 155-182. Dziewonski, A.M., G. Ekstrom, J.E. Franzen, and J.H. Woodhouse, 1988, Global seismicity of 1982 & 1983: Additional centroid-moment tensor solutions for 308 earthquakes, Physics of the Earth and Planetary Interiors 53: 17-45. Ekstrom, G. and A.M. Dziewonski, 1985, Centroid-moment tensor solutions for 35 earthquakes in western N America (1977-1983), Bulletin of the Seismological Society of America 75: 23-39. Giardini, D., 1984, Systematic analysis of deep seismicity: 200 centroid-moment solutions for earthquakes between 1977 and 1980, The Geophysical Journal of the Royal Astronomical Society 77: 883-914. Giardini, D., A.M. Dziewonski, and J.H. Woodhouse, 1985, Centroid-moment tensor solutions for 113 large earthquakes in 1977-1980, Physics of the Earth and Planetary Interiors 40: 259-272. Woodhouse, J.H. and A.M. Dziewonski, 1984, Mapping the upper mantle: 3-D modeling of Earth structure by waveform inversion, Journal of Geophysical Research 89: 5953-5986. Notes "Time_Period_of_Content" is subject to change as the data set is updated. The metadata contact for this coverage is: Muawia Barazangi Snee Hall, Department of Geosciences Cornell University / INSTOC Ithaca, NY 14853 phone: (607)255-6411 fax: (607)254-4780 (ArcInfo automatically--and mistakenly--lists Dziewonski as metadata contact in FGDC format.) Time_Period_of_Content Range_of_Dates/Times Beginning_Date: 19770101 Ending_Date: 19960930 Currentness_Reference Status Progress: published Maintenance_and_Update_Frequency Updated regularly. Spatial_Domain Bounding_Coordinates West_Bounding_Coordinate: -180 East_Bounding_Coordinate: 179.99000549 North_Bounding_Coordinate: 87.34999847 South_Bounding_Coordinate: -72.12000275 Keywords Theme Theme_Keyword_Thesaurus: None Theme_Keyword: focal mechanisms Place Place_Keyword_Thesaurus: None Place_Keyword: global Stratum Stratum_Keyword_Thesaurus: None Stratum_Keyword: Temporal Temporal_Keyword_Thesaurus: None Temporal_Keyword: Access_Constraints Use_Constraints See Entity_and_Attribute_Overview. Point_of_Contact: See Distribution_Information for contact information. Data_Set_Credit Security_Information Security_Classification_System: None Security_Classification: UNCLASSIFIED Security_Handling_Description: None Native_Data_Set_Environment: SunOS UNIX, ARC/INFO version 7.2.1 Cross_Reference Originator: Publication_Date: Publication_Time: Title: Edition: Geospatial_Data_Presentation_Form: Series_Information Series_Name: Issue_Identification: Publication_Information Publication_Place: Publisher: Other_Citation_Details: Online_Linkage: Larger_Work_Citation: 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 is described, where present, with each attribute defined in the Entity and Attribute Section. Logical_Consistency_Report: Point features present. Completeness_Report Positional_Accuracy Horizontal_Positional_Accuracy Horizontal_Positional_Accuracy_Report: See Entity_and_Attribute_Overview. Vertical_Positional_Accuracy Vertical_Positional_Accuracy_Report: See Entity_and_Attribute_Overview. Lineage: See Supplemental_Information for overview. Process_Steps Process_Step Process_Description: SEBER APPEND CMT POINT ALL Source_Used_Citation_Abbreviation:None Process_Date: 19970401 Process_Time: 1635 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: CORGREN DOCUMENT CMT CREATE CORGREN Source_Used_Citation_Abbreviation:None Process_Date: 19971201 Process_Time: 1615 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: CORGREN DOCUMENT CMT UPDATE CORGREN Source_Used_Citation_Abbreviation:None Process_Date: 19971202 Process_Time: 1425 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: CORGREN DOCUMENT CMT UPDATE CORGREN Source_Used_Citation_Abbreviation:None Process_Date: 19971202 Process_Time: 1520 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: CORGREN DOCUMENT CMT UPDATE CORGREN Source_Used_Citation_Abbreviation:None Process_Date: 19971205 Process_Time: 1617 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: CORGREN DOCUMENT CMT UPDATE CORGREN Source_Used_Citation_Abbreviation:None Process_Date: 19971211 Process_Time: 1122 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: CORGREN PROJECTDEFINE COVER CMT Source_Used_Citation_Abbreviation:None Process_Date: 19980127 Process_Time: 1746 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: CORGREN DOCUMENT CMT UPDATE CORGREN Source_Used_Citation_Abbreviation:None Process_Date: 19980130 Process_Time: 1040 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: CORGREN PROJECTDEFINE COVER /ACE3/MENU/DATA/CMTS/CMT Source_Used_Citation_Abbreviation:None Process_Date: 19980616 Process_Time: 1518 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: CORGREN DOCUMENT CMT UPDATE CORGREN Source_Used_Citation_Abbreviation:None Process_Date: 19980616 Process_Time: 1521 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: CORGREN DOCUMENT CMT UPDATE CORGREN Source_Used_Citation_Abbreviation:None Process_Date: 19980619 Process_Time: 1051 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: CORGREN DOCUMENT CMT UPDATE CORGREN Source_Used_Citation_Abbreviation:None Process_Date: 19980619 Process_Time: 1130 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: CORGREN DOCUMENT CMT UPDATE CORGREN Source_Used_Citation_Abbreviation:None Process_Date: 19980619 Process_Time: 1207 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: CORGREN DOCUMENT CMT UPDATE CORGREN Source_Used_Citation_Abbreviation:None Process_Date: 19980625 Process_Time: 1427 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: SEBER COPY CMT /ACE3/SANDIA/CD1/CMT Source_Used_Citation_Abbreviation:None Process_Date: 19980701 Process_Time: 815 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: SEBER DOCUMENT CMT UPDATE SEBER Source_Used_Citation_Abbreviation:None Process_Date: 19980701 Process_Time: 938 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: SEBER COPY CMT /ACE3/MENU/DATA/CMTS/CMT Source_Used_Citation_Abbreviation:None Process_Date: 19980701 Process_Time: 941 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: CORGREN DOCUMENT CMT UPDATE CORGREN Source_Used_Citation_Abbreviation:None Process_Date: 19980701 Process_Time: 949 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: CORGREN DOCUMENT CMT UPDATE CORGREN Source_Used_Citation_Abbreviation:None Process_Date: 19980701 Process_Time: 959 Source_Produced_Citation_Abbreviation: None Process_Step Process_Description: CORGREN ARCEDIT /ACE3/MENU/DATA/CMTS/CMT Source_Used_Citation_Abbreviation:None Process_Date: 19980812 Process_Time: 1753 Source_Produced_Citation_Abbreviation: None Cloud_Cover 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: 13706 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 Latitude_Resolution: Longitude_Resolution: Geographic_Coordinate_Units: Decimal Degrees Geodetic Model Horizontal_Datum_Name: WGS84 Ellipsoid_Name: WGS84 Entity_and_Attribute_Information Detailed_Description Entity_Type Entity_Type_Label: CMT.PAT Entity_Type_Definition: earthquake location, magnitude, fault plane solution, error Entity_Type_Definition_Source: ARC/INFO Attribute: Attribute_Label: - Attribute_Definition: earthquake location, magnitude, fault plane solution, error Attribute_Definition_Source: ARC/INFO Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: - Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: AREA Attribute_Definition: Degenerate area of point Attribute_Definition_Source: Assigned Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: PERIMETER Attribute_Definition: Degenerate perimeter of point Attribute_Definition_Source: Assigned Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: CMT# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: CMT-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Integer Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: DIP_RAKE Attribute_Definition: dip and rake rounded to nearest ten degrees Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: 2-digit number, underscore, +/- 3-digit number Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: SYMBOL Attribute_Definition: symbol number for appropriate focal mechanism symbol Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: integer Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: DATE Attribute_Definition: month, day, year Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: dataset begins at 01/01/77 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: HOUR Attribute_Definition: hour time of event Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: integer 0 - 23 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MIN Attribute_Definition: minute of event time Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: 0-59 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: SEC Attribute_Definition: second of event time Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: 0.0 to 59.9 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: SECCOR Attribute_Definition: centroid time from the inversion measured from origin time Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: LAT Attribute_Definition: latitude Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: decimal degrees Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: LON Attribute_Definition: longitude Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: decimal degrees Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: CODE Attribute_Definition: source of epicenter information Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: MLI, PDE, ISC Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: DEPTH Attribute_Definition: depth in km Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: STRIKE Attribute_Definition: strike for best double couple (Aki & Richards convention for fault angles) Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: integer 0 to 359 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: DIP Attribute_Definition: dip for best double couple (Aki and Richards convention for fault angles) Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: integer 1 to 90 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: RAKE Attribute_Definition: rake for best double couple (Aki and Richards convention for fault angles) Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: integers -180 to +180 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: STRIKE2 Attribute_Definition: strike for second nodal plane (Aki & Richards convention for fault angles) Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: 0 to 359 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: DIP2 Attribute_Definition: dip for best double couple (Aki and Richards convention for fault angles) Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: 1 to 90 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: RAKE2 Attribute_Definition: rake for best double couple (Aki and Richards convention for fault angles) Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: -180 to +180 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: EIGVAL1 Attribute_Definition: eigenvalue of eigenvector 1 Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: PLUNGE1 Attribute_Definition: plunge of eigenvector 1 Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: STRIKEA Attribute_Definition: strike of eigenvector 1 Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: EIGVAL2 Attribute_Definition: eigenvalue of eigenvector 2 Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: PLUNGE2 Attribute_Definition: plunge of eigenvector 2 Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: STRIKEB Attribute_Definition: strike of eigenvector 2 Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: EIGVAL3 Attribute_Definition: eigenvalue of eigenvector 3 Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: PLUNGE3 Attribute_Definition: plunge of eigenvector 3 Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: STRIKEC Attribute_Definition: strike of eigenvector 3 Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: T_MOMENT Attribute_Definition: scalar moment, to be multiplied by 10^EXPONENT Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: EXPONENT Attribute_Definition: exponent of all moment values Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MRR Attribute_Definition: first moment tensor element Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MRR_ERR Attribute_Definition: standard error of first moment tensor element Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MSS Attribute_Definition: second moment tensor element Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MSS_ERR Attribute_Definition: error of second moment tensor element Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MEE Attribute_Definition: third moment tensor element Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MEE_ERR Attribute_Definition: error of third moment tensor element Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MRS Attribute_Definition: fourth moment tensor element Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MRS_ERR Attribute_Definition: error of fourth moment tensor element Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MRE Attribute_Definition: fifth moment tensor element Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MRE_ERR Attribute_Definition: error of fifth moment tensor element Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MSE Attribute_Definition: sixth moment tensor element Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MSE_ERR Attribute_Definition: standard error of sixth moment tensor element Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MB Attribute_Definition: body wave magnitude Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MS Attribute_Definition: surface wave magnitude Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: NUM_STA Attribute_Definition: number of body-wave stations used in the inversion Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: NREC Attribute_Definition: number of body-wave records used in the inversion Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: ICUT Attribute_Definition: body-wave cutoff in seconds Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MWSTA Attribute_Definition: number of mantle wave stations used in the inversion Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MWREC Attribute_Definition: number of mantle wave records used in the inversion Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MICUT Attribute_Definition: mantle wave cutoff in seconds Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: CLAT Attribute_Definition: centroid latitude in decimal degrees Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: CLAT_ERR Attribute_Definition: standard error of centroid latitude Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: CLON Attribute_Definition: centroid longitude in decimal degrees Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: -180 to +180 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: CLON_ERR Attribute_Definition: standard error of centroid longitude Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: CDEPTH Attribute_Definition: centroid depth in km Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: CDEPTH_ERR Attribute_Definition: standard error of centroid depth Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: X-COORD Attribute_Definition: longitude Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: -180 to +180 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: Y-COORD Attribute_Definition: latitude in decimal degrees Attribute_Definition_Source: Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: -90 to +90 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Overview_Description Entity_and_Attribute_Overview Definitions are from the format description of the Harvard Centroid-Moment Tensor catalog on the web page: ftp://saf.harvard.edu/CMT/allorder.dek_explained Note that date, origin time, lat, long, depth, mb, and MS are all as reported by NEIS or ISC DIP_RAKE--dip and rake rounded to nearest ten degrees SYMBOL--symbol number for appropriate focal mechanism symbol DATE--date of earthquake in MM/DD/YY format HOUR--hour of earthquake MIN--minute of earthquake SEC--second of earthquake SECCOR--centroid time from the inversion measured from origin time LAT--latitude in decimal degrees LON--longitude in decimal degrees CODE--source of epicenter information MLI = NEIC monthly listings PDE = Preliminary listings ISC = ISC catalog DEPTH--depth of hypocenter in kilometers The following six attributes use the Aki and Richards (1980) convention for fault angles. STRIKE--strike for best double couple DIP--dip for best double couple RAKE--rake for best double couple STRIKE2--strike for second nodal plane DIP2--dip for second nodal plane RAKE2--rake for second nodal plane The following nine attributes are the moment tensor expressed in its principle axis system: EIGVAL1--eigenvalue of eigenvector 1 PLUNGE1--plunge of eigenvector 1 STRIKEA--strike of eigenvector 1 EIGVAL2--eigenvalue of eigenvector 2 PLUNGE2--plunge of eigenvector 2 STRIKEB--strike of eigenvector 2 EIGVAL3--eigenvalue of eigenvector 3 PLUNGE3--plunge of eigenvector 3 STRIKEC--strike of eigenvector 3 T_MOMENT--scalar moment, to be multiplied by 10^EXPONENT EXPONENT--exponent of all moment values; 24 means that all moments are value*10^24 Next: moment tensor elements, each followed immediately by its standard error. The coordinate system is r=up, s=South, e=East, and the 6 elements are ordered Mrr, Mss, Mee, Mrs, Mre, Mse. See Aki and Richards for conversion to other systems. MRR MRR_ERR MSS MSS_ERR MEE MEE_ERR MRS MRS_ERR MRE MRE_ERR MSE MSE_ERR MB--body wave magnitude MS--surface wave magnitude NUM_STA--number of body-wave stations used in the inversion NREC--number of body-wave records used in the inversion ICUT--body-wave cutoff in seconds MWSTA--number of mantle wave stations used in the inversion MWREC--number of mantle wave records used in the inversion MICUT--mantle wave cutoff in seconds CLAT--centroid latitude CLAT_ERR--standard error of centroid latitude CLON--centroid longitude CLON_ERR--standard error of centroid longitude CDEPTH--centroid depth CDEPTH_ERR--standard error of centroid depth X-COORD--longitude Y-COORD--latitude Entity_and_Attribute_Detail_Citation: Not Available Distribution_Information Metadata_Reference_Section Metadata_Date: 19980701 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Adam Dziewonski Contact_Organization: Department of Earth and Planetary Science, Harvard Contact_Address: Address_Type: mailing address Address: Harvard University City: Cambridge State_or_Province: Massachusetts Postal_Code: 02138 Country: U.S.A. Contact_Electronic_Mail_Address: eq@seismology.harvard.edu Contact_Instructions: http://www.seismology.harvard.edu/projects/CMT/ 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