A106AK_PhotoLocations

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

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: <https://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 <http://walrus.wr.usgs.gov/infobank/a/a106ak/html/a-1-06-ak.meta.html>.

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, <https://buy.garmin.com/shop/store/assets/pdfs/specs/gpsmap76c_76cs_spec.pdf>).

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, <https://buy.garmin.com/shop/store/assets/pdfs/specs/gpsmap76c_76cs_spec.pdf>).

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 <http://support.esri.com/index.cfm?fa=knowledgebase.gisDictionary.search&searchTerm=shapefile>

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal, ArcGIS feature number.

Attribute_Definition_Source:

ESRI <http://support.esri.com/index.cfm?fa=knowledgebase.gisDictionary.search&searchTerm=feature%20table>

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 <http://support.esri.com/index.cfm?fa=knowledgebase.gisDictionary.search&searchTerm=shape>

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the ArcGIS features.

Attribute:

Attribute_Label: LON

Attribute_Definition: Longitude

Attribute_Definition_Source:

ESRI <http://support.esri.com/index.cfm?fa=knowledgebase.gisDictionary.search&searchTerm=latitude>

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 <http://support.esri.com/index.cfm?fa=knowledgebase.gisDictionary.search&searchTerm=longitude>

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 <http://support.esri.com/index.cfm?fa=knowledgebase.gisDictionary.search&searchTerm=altitude>

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 <http://support.microsoft.com/kb/241072>

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 <http://pubs.er.usgs.gov/usgspubs/index.jsp?view=adv>

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