Open-File Report 2012-1259 SP_Raw_Slipface.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_Raw_Slipface_Geog Alternate Titles: South Pole Raw Slipface 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 -179.815231 * East Longitude 178.902637 * North Latitude -64.939799 * South Latitude -80.869343 * 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_Raw_Slipface_Geog Content Type: Downloadable Data ESRI Spatial Information Extent In The Item's Coordinate Reference Bounding Rectangle: * West Longitude -179.815231 * East Longitude 178.902637 * North Latitude -64.939799 * South Latitude -80.869343 * 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_Raw_Slipface_Geog * Feature Type: Simple * Geometry Type: Polyline * Has Topology: False * Feature Count: 387 * Spatial Index: True * Linear Referencing: False ESRI Fields and Subtypes SP_Raw_Slipface_Geog Feature Class * ROW COUNT 387 DEFINITION (polylines) Slipfaces were digitized based on gross morphology of dunes to represent wind direction responsible for that morphology (~400 raw slipface records). It was beyond the scope of this report to look at the detail needed to discern subtle dune modification. It was also beyond the scope of this report to measure all slipfaces. We attempted to include enough slipface measurements to represent the general circulation (as implied by gross dune morphology) and to give a sense of the complex nature of aeolian activity on Mars. The absence of slipface measurements in a given direction should not be taken as evidence that winds in that direction did not occur. 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 DuneBID ALIAS Dune_Lon_Lat_ID * DATA TYPE String * WIDTH 20 FIELD DESCRIPTION Each dune field has 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. FIELD SF_ID ALIAS Slipface ID * DATA TYPE String * WIDTH 20 FIELD DESCRIPTION The Dune_lat_lon_ID with a, b, c or d appended when multiple averages are calculated for a single dune field. This occurs when winds are multidirectional. FIELD RSF_GeogAz ALIAS Raw_Slipface_Azimuth_Geog * DATA TYPE Double * WIDTH 8 FIELD DESCRIPTION Polylines were drawn on slipfaces, based on gross morphology of dunes, to represent wind direction responsible for that morphology. Azimuth is given in decimal degrees, calculated in the Simple Cylindrical projection (for compatibility with the Equatorial and North Polar parts of MGD3). FIELD Avg_GeogAz ALIAS Average_Slipface_Azimuth_Geog * DATA TYPE Double * WIDTH 8 FIELD DESCRIPTION The average slipface azimuth, in decimal degrees, for a given group of raw slipface measurements, calculated in the Simple Cylindrical projection (for compatibility with the Equatorial and North Polar parts of MGD3). FIELD Count_Raw ALIAS Raw_Slipface_Count * DATA TYPE Integer * WIDTH 4 FIELD DESCRIPTION The number of raw slipfaces used to calculate the average slipface azimuth. FIELD RSF_SterAz ALIAS Raw_Slipface_Azimuth_Ster * DATA TYPE Double * WIDTH 8 FIELD DESCRIPTION Azimuth in decimal degrees, calculated in the South Polar Stereographic projection. FIELD Avg_SterAz ALIAS Average_Slipface_Azimuth_Ster * DATA TYPE Double * WIDTH 8 FIELD DESCRIPTION The average slipface azimuth, in decimal degrees, for a group of raw slipface measurements, calculated in the South Polar Stereographic projection. FIELD RSF_MercAz ALIAS Raw_Slipface_Azimuth_Merc * DATA TYPE Double * WIDTH 8 FIELD DESCRIPTION Azimuth in decimal degrees, calculated in the Mercator projection. We recommend using this field for comparison to other azimuths. FIELD Avg_MercAz ALIAS Average_Slipface_Azimuth_Merc * DATA TYPE Double * WIDTH 8 FIELD DESCRIPTION The average slipface azimuth, in decimal degrees, for a group of raw slipface measurements, calculated in Mercator projection. We recommend using this field for comparison to other azimuths. FIELD Shape_Length * ALIAS Shape_Length * DATA TYPE Double * WIDTH 8 * FIELD DESCRIPTION Length of feature in internal units. * DESCRIPTION SOURCE ESRI * DESCRIPTION OF VALUES Positive real numbers that are automatically generated. 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