Metadata: Identification_Information: Citation: Citation_Information: Originator: Ann E. Gibbs Publication_Date: 2009 Title: A106AK_PhotoLocations Geospatial_Data_Presentation_Form: remote-sensing image Series_Information: Series_Name: USGS Digital Data Series Issue_Identification: DS-436 Publication_Information: Publication_Place: Santa Cruz, CA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/ds/436/ Description: Abstract: As part of the U.S. Geological Survey Coastal and Marine Geology Program's National Assessment of Shorline Change project, oblique aerial photographic survey A-1-06-AK was conducted in the summer of 2006 along the mainland coast and barrier island shorelines of the eastern Chukchi and Beaufort Sea coasts of Alaska. Over 3000 digital still photographs were taken from about ~60 km southwest of Barrow, Alaska to the U.S./Canadian border between Aug 7 and 10, 2006. This ArcGIS shape file includes the position of the aircraft and the time each photo was taken. Purpose: To provide an easily accessible overview of the coastal morphology and character of the north Alaska coast. Supplemental_Information: Information about the data collection field activity, A-1-06-AK, is at . Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20060807 Ending_Date: 20060810 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -157.538019 East_Bounding_Coordinate: -140.909008 North_Bounding_Coordinate: 71.389706 South_Bounding_Coordinate: 69.631448 Keywords: Theme: Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD) Theme_Keyword: Aerial Photographs Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: ImageeryBaseMapsEarthCover Theme_Keyword: oceans Place: Place_Keyword_Thesaurus: U.S. Geographic Names Information System (GNIS) Place_Keyword: Nulavik, Alaska Place_Keyword: Demarcation Point, Alaska Place_Keyword: Alaska Place: Place_Keyword_Thesaurus: General Place_Keyword: Northern Alaska Coast Access_Constraints: Information presented on this site is considered public information and may be distributed or copied. Use_Constraints: Use of appropriate byline/photo/image credit is requested; Suggested credit: Photo by Bruce Richmond/Ann Gibbs, USGS (or U.S. Geological Survey, depending on audience). This information is not intended for navigational purposes. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Ann E. Gibbs Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 400 Natural Bridges Drive City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: USA Contact_Voice_Telephone: 831-427-4740 Contact_Electronic_Mail_Address: agibbs@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://walrus.wr.usgs.gov/infobank/a/a106ak/html/a-1-06-ak.index.png Browse_Graphic_File_Description: Index map of the flight path. Browse_Graphic_File_Type: PNG Data_Set_Credit: U.S. Geological Survey Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.3.0.1770 Cross_Reference: Citation_Information: Originator: U.S. Geological Survey, Coastal and Marine Geology Program Publication_Date: 2007 Title: National Assessment of Shoreline Change Project Online_Linkage: http://coastal.er.usgs.gov/shoreline-change/ Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Accuracy of data set attribute information was deduced to be good based both on visual examination of photographic image and of flight line location and on their agreement with observer's field knowledge. Logical_Consistency_Report: Because of variable aircraft altitude and distance from the shoreline, along with variable shooting prarmeters, the photgraphs do not show a consistant image width. Completeness_Report: Some gaps in photography exist due to fog banks or rain, and only partial coverage of the river delta areas were collected. Total coverage is estimated at well over 80%. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Positional information reflects the position of the aircraft and was collected using a handheld, WAAS enabled GSP unit, recording at between 6 and 10 Hz. DGPS (WAAS) accuracy for position is less than 3 meters. (From Garmin GPSMAP 76C/76CS Specifications, M01-10108-00, Rev0304, ). Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The aircraft typically flew at about 500 feet elevation and approximately 1000 feet offshore. Barometric altimeter features 10 feet accuracy with proper calibration with a resolution of 1 foot. (From Garmin GPSMAP 76C/76CS Specifications, M01-10108-00, Rev0304, ). Lineage: Process_Step: Process_Description: Photos were collected from a Cessna 185 Skywagon II floatplane, typically at an altitude of about 500 feet (152 meters) and approximately 1000 feet (305 meters) offshore. The primary camera was a 6.3 megapixel Canon EOS D60, with a 24.0-85mm lens ("IMG_iiii.jpg" filename format, where "iiii" is an image counter). A Sony DSC-T1, 5 megapixel "point and shoot" camera was also used briefly on 10-AUG ("DSCiiii.jpg" filename format, where "iiii" is an image counter). In general, photographs were taken using the largest field of view. However, the photographer could also zoom the lens to collect more detailed photos of features of interest. Because of variable aircraft altitude and distance from the shoreline, along with variable shooting parameters, the photographs do not show a consistent image width. A Garmin GPSmap 76CS (WAAS enabled) handheld global positioning system (GPS) unit recorded the position of the aircraft every 5 to 10 seconds. All the imagery was georeferenced to the aircraft position at the time the photo was taken, annotated with position and time information, resampled (to 2000 x 1333 pixels), and compressed (to 90% original .jpg quality) using software and hardware developed by Red Hen Systems (http://redhensystems.com). Process_Date: 2006 Cloud_Cover: 20 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity point Point_and_Vector_Object_Count: 3067 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000001 Longitude_Resolution: 0.000001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: A106AK_PhotoLocations Entity_Type_Definition: The shapefile attributes include the location of the aircraft (Longitude, Latitude, Altitude) and UTC time when each photo was taken, the image "NAME", and the field "IMAGE", that denotes the location of the image file. The shapefile can be added to any ESRI ArcMap project. Entity_Type_Definition_Source: ESRI Attribute: Attribute_Label: FID Attribute_Definition: Internal, ArcGIS feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential, unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the ArcGIS features. Attribute: Attribute_Label: LON Attribute_Definition: Longitude Attribute_Definition_Source: ESRI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -157.538019 Range_Domain_Maximum: -140.909008 Attribute_Units_of_Measure: Decimal degrees; Western Hemisphere values are negative. Attribute: Attribute_Label: LAT Attribute_Definition: Latitude Attribute_Definition_Source: ESRI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 69.631448 Range_Domain_Maximum: 71.389706 Attribute_Units_of_Measure: Decimal degrees; Northern Hemisphere values are positive. Attribute: Attribute_Label: ALT Attribute_Definition: Altitude Attribute_Definition_Source: ESRI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 13.500 Range_Domain_Maximum: 255.700 Attribute_Units_of_Measure: Decimal meters above mean sea level. Attribute: Attribute_Label: UTC Attribute_Definition: UTC time (MS OLE format) Attribute_Definition_Source: Microsoft Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 38936.934109 Range_Domain_Maximum: 38939.067604 Attribute_Units_of_Measure: Decimal serial number of days since January 1, 1900. Attribute: Attribute_Label: NAME Attribute_Definition: Photo name Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Names are in the form "DSC0iiii" or "IMG_iiii" where "iiii" is an image counter. Attribute: Attribute_Label: IMAGE Attribute_Definition: Photo location (for hotlink) Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Names are in the form "A106AK_ddAUG06_photos\A106AK_IMG_iiii.jpg" or "A106AK_ddAUG06_photos\A106AK_DSC0iiii.jpg" where "dd" is the day of month and "iiii" is an image counter. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Ann E. Gibbs Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 400 Natural Bridges Drive City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: USA Contact_Voice_Telephone: 831-427-4740 Contact_Electronic_Mail_Address: agibbs@usgs.gov Distribution_Liability: Information presented on this site is considered public information and may be distributed or copied. Use of appropriate byline/photo/image credit is requested; Suggested credit: Photo by Bruce Richmond, USGS (or U.S. Geological Survey, depending on audience). This information is not intended for navigational purposes. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user. Resource_Description: Digital Data Series DS-436 Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE Transfer_Size: 0.082 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: USGS Publication Warehouse Fees: None Metadata_Reference_Information: Metadata_Date: 20090119 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Ann E. Gibbs Contact_Address: Address_Type: 400 Natural Bridges Drive City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4740 Contact_Electronic_Mail_Address: agibbs@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile