Open-File Report 2012-1259 SP_Crater_Centroid .doc Mars Global Digital Dune Database: MC-30 By R.K. Hayward, L.K. Fenton, T.N. Titus, A. Colaprete, and P.R. Christensen 2012 (http:pubs.usgs.gov/of/2012/1259) Summary See Pamphlet.doc, Mars Global Digital Dune Database Purpose. Description See Pamphlet.doc, Mars Global Digital Dune Database Abstract. Credits There are no credits for this item. Access and use limitations There are no restrictions. ArcGIS Metadata Resource Identification Citation Title: SP_Crater_Centroid_Geog Alternate Titles: South Pole Crater Centroid Presentation Format: digital map Collection Title: Mars Global Digital Dune Database Responsible Party: Individual's Name: Rosalyn K. Hayward Organization's Name: USGS, Astrogeology Contact's Position: Geologist Contact's Role : Originator Contact Information: Phone: Voice: (928) 566-7022 Fax: (928) 566-7014 Address: Delivery Point: 2255 N. Gemini Dr. City: Flagstaff Administrative Area: Az Postal Code: 86001 Country: United States E-Mail Address: rhayward@usgs.gov Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2012/1259 Themes Or Categories Of The Resource : geoscientificInformation Tags For Searching: Dune, Aeolian, Mars, Database, GCM Discipline Keywords: Planetary Science Place Keywords: Mars Theme Keywords: Dune Theme Keywords: Aeolian Theme Keywords: Database Theme Keywords: GCM Dataset Languages: English (United States) Dataset Character Set Utf8 - 8 Bit Ucs Transfer Format Status: Completed Resource Maintenance: Update Frequency: Not Planned Scope Of The Updates: Dataset Resource Constraints: Constraints: Limitations Of Use: There are no restrictions. Spatial Representation Type: Vector * Processing Environment: Microsoft Windows Server 2008 R2 Version 6.1 (Build 7601) Service Pack 1; Esri Arcgis 10.0.2.3200 Other Extent Information: Geographic Extent: Bounding Rectangle: * Extent Type Extent Used For Searching * West Longitude -179.628372 * East Longitude 179.627566 * North Latitude -65.064864 * South Latitude -80.194694 * Extent Contains The Resource: Yes Point Of Contact: Individual's Name: Rosalyn K. Hayward Organization's Name: USGS, Astrogeology Contact's Position: Geologist Contact's Role: Originator Contact Information: Phone: Voice: (928) 566-7022 Fax: (928) 566-7014 Address: Delivery Point: 2255 N. Gemini Dr. City: Flagstaff Administrative Area: Az Postal Code: 86001 Country: United States E-Mail Address: rhayward@usgs.gov Reference System Reference System Identifier Value 104905 * Codespace Esri * Version 10.0.0 Data Quality Scope Of Quality Information Resource Level: dataset Lineage: Process Step: See Pamphlet.doc, Mars Global Digital Dune Database Process. Data Quality Report - Completeness Omission: See Pamphlet.doc, Mars Global Digital Dune Database - Completeness of Database. Data Quality Report - Conceptual Consistency Measure Description: All attributes were verified by displaying the lines in both the database and the spatial coverage and they are believed to be logically consistent. Data Quality Report - Topological Consistency Measure Description: These data are believed to be logically consistent. Line geometry is topologically clean. Data Quality Report - Absolute External Positional Accuracy: Measure Description: The horizontal accuracy is derived from the accuracy of the Mars Orbiter Laser Altimeter (MOLA) dataset [Smith and others, 2001]. The globally adjusted MOLA dataset has an absolute horizontal accuracy on the order of 100 m, but individual features in images can probably only be tied to MOLA-derived shaded-relief digital image models with a precision on the order of 200 m. Other bases used included Thermal Emission Imaging System (THEMIS) digital images [Archinal and others, 2003, Christensen and others, 2004]. The digital features were drawn at 20K to 100K scale with a node spacing of approximately 0.3 km to 2 km. ESRI Metadata and Item Properties Metadata Properties: Arcgis: Arcgis1.0 Metadata Style: FGDC CSDGM Metadata Metadata Standard Or Profile: FGDC Created In Arcgis: 2012-05-14t13:03:12 Last Modified In Arcgis: 2012-06-03t15:08:05 Automatic Updates: Last Update: 2012-06-03t15:06:39 Have Been Performed: Yes Item Properties Name: SP_Crater_Centroid_Geog Content Type: Downloadable Data ESRI Spatial Information Extent In The Item's Coordinate Reference Bounding Rectangle: * West Longitude -179.628372 * East Longitude 179.627566 * North Latitude -65.064864 * South Latitude -80.194694 * Extent Contains The Resource: Yes Coordinate Reference Type: Geographic Geographic Coordinate Reference: GCS_Mars_2000 Coordinate Reference Details Geographic Coordinate System Well-Known Identifier: 104905 X Origin: -399.99999999999989 Y Origin: -399.99999999999989 XY Scale: 1000000000.0000001 Z Origin: -100000 Z Scale: 10000 M Origin: -100000 M Scale: 10000 XY Tolerance: 1.6870604858115214e-008 Z Tolerance: 0.001 M Tolerance: 0.001 High Precision: True Left Longitude: -180 Well-Known Text GEOGCS["GCS_Mars_2000",DATUM["D_Mars_2000",SPHEROID ["Mars_2000_IAU_IAG",3396190.0,169.8944472236118]],PRIMEM ["Reference_Meridian",0.0],UNIT["Degree",0.0174532925199433],AUTHORITY ["ESRI",104905]] ESRI Feature Class Feature Class Name: SP_Crater_Centroid_Geog * Feature Type: Simple * Geometry Type: Polyline * Has Topology: False * Feature Count: 348 * Spatial Index: True * Linear Referencing: False ESRI Fields and Subtypes SP_Crater_Centroid_Geog Feature Class * ROW COUNT 348 DEFINITION (shape - point) Points that show location of centroids of craters on Mars between lat 65 degrees and 90 degrees S. that are occupied by dune fields in the database. We did not force a centroid to fall within its polygon, therefore for irregular polygons the centroid may fall outside the polygon. Note that the term "crater" was used for simplicity, even though a small number of the circular depressions containing dunes may not be impact craters. (~350 records) DEFINITION SOURCE Mars Global Digital Dune Database FIELD OBJECTID * ALIAS OBJECTID * DATA TYPE OID * WIDTH 4 FIELD DESCRIPTION Internal feature number. * DESCRIPTION SOURCE ESRI * DESCRIPTION OF VALUES Sequential unique whole numbers that are automatically generated. FIELD Shape * ALIAS Shape * DATA TYPE Geometry * FIELD DESCRIPTION Feature geometry. * DESCRIPTION SOURCE ESRI * DESCRIPTION OF VALUES Coordinates defining the features. FIELD CBarlowID ALIAS Crater_“BarlowID” * DATA TYPE String * WIDTH 20 FIELD DESCRIPTION Crater_"BarlowID" (CraterBID) - a unique ID number constructed after the method used by Barlow (2003) to assign ID numbers to craters. Longitude is listed first and both values are extended to one decimal place. The + or – sign of the latitude is given, indicating the break between the two values. Thus 122.5 east longitude, -34.5 south latitude, becomes 1225-345. The longitude is always four digits and the latitude is always three digits, filling in with leading zeroes where necessary. Note that the term "crater" was used for simplicity, even though a small number of the circular depressions containing dunes may not be impact craters. Metadata Details Metadata Language: English Metadata Character Set: Utf8 - 8 Bit Ucs Transfer Format Scope Of The Data Described By The Metadata: Dataset * Scope Name: Dataset Metadata Contact: Individual's Name: Rosalyn K. Hayward Organization's Name: USGS,Astrogeology Contact's Position: Geologist Contact's Role: Originator Contact Information: Phone: Voice: (928) 566-7022 Fax: (928) 566-7014 Address: Delivery Point: 2255 N. Gemini Dr. City: Flagstaff Administrative Area: Az Postal Code: 86001 Country: United States E-Mail Address: rhayward@usgs.gov * Last Update: 2012-06-03 Maintenance: Update Frequency: Not Planned Scope Of The Updates: Dataset