Gridded Data from a 2011 Multibeam Bathymetric Survey of the Western Part of Passage Canal, Near Whittier, Alaska

Identification_Information:

Citation:

Citation_Information:

Originator: Haeussler, P.J. (ORCID: 0000-0002-1503-6247)
Originator: Finlayson, D. (ORCID: 0000-0002-9807-2883)
Originator: Parsons, T. (ORCID: 0000-0002- 0582-4338)
Originator: Hart, P. (ORCID: 0000-0002-5080-1426)
Originator: Labay, K.A. (ORCID: 0000-0002-6763-3190)
Publication_Date: 20220112
Title:

Geospatial_Data_Presentation_Form: raster digital data
Series_Information:

Series_Name: U.S. Geological Survey Data Release
Issue_Identification: DOI:10.5066/P9458THH

Publication_Information:

Publication_Place: Anchorage, Alaska
Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested_Citation: Haeussler, P.J., Finlayson, D., Parsons, T., Hart, P., and Labay, K.A., 2022, Gridded data from a 2011 multibeam bathymetric survey of the western part of Passage Canal, near Whittier, Alaska: U.S. Geological Survey data release, https://doi.org/10.5066/P9458THH

Online_Linkage: https://doi.org/10.5066/P9458THH

Description:

Abstract:

This data release provides bathymetry data for the western part of Passage Canal, near Whittier Alaska. It was collected by the USGS Pacific Coastal and Marine Science Center in 2011 under Field Activity Number A0111GA. The data release consists of a 5 m grid, derived from processed and cleaned multibeam data. Depths were corrected for tidal variations and calculated using conductivity, temperature, and depth profiles collected during the survey.

Purpose:

This data was collected to better understand submarine landslides in Passage Canal that occurred during the 1964 earthquake. There was no attempt to collect data shallower than 20 m. As there is no NOAA multibeam survey of this region, this is the most detailed bathymetry available for the area.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20110815
Ending_Date: 20110822

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -148.7430
East_Bounding_Coordinate: -148.4435
North_Bounding_Coordinate: 60.8411
South_Bounding_Coordinate: 60.7673

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: elevation

Theme:

Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: bathymetry and elevation

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: bathymetry

Theme:

Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: multibeam echo sounder

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:ASC426

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Pacific Coastal and Marine Science Center
Theme_Keyword: PCMSC
Theme_Keyword: Alaska Science Center
Theme_Keyword: ASC

Place:

Place_Keyword_Thesaurus: USGS Geographic Names Information System (GNIS)
Place_Keyword: Alaska
Place_Keyword: Passage Canal
Place_Keyword: Prince William Sound
Place_Keyword: Whittier

Access_Constraints: None
Use_Constraints:

None. USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. This information is not intended for navigation purposes.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: Peter Haeussler

Contact_Address:

Address_Type: mailing and physical
Address: 4210 University Dr.
City: Anchorage
State_or_Province: AK
Postal_Code: 99567

Contact_Voice_Telephone: 907-786-7000
Contact_Electronic_Mail_Address: ascweb@usgs.gov

Native_Data_Set_Environment: ESRI ArcGIS version 10.8.1
Cross_Reference:

Citation_Information:

Originator: Witter, Robert C.
Publication_Date: 2007
Title: Alaska Earthquake Hazards
Geospatial_Data_Presentation_Form: webpage
Series_Information:

Series_Name: Science Portal
Issue_Identification: 33

Publication_Information:

Publication_Place: Anchorage, Alaska
Publisher: U.S. Geological Survey, Alaska Science Center

Other_Citation_Details:

This is a link to the broader USGS Alaska Science Center research project supported by these data. Users will find a description of the research project and links to associated reports, publications, and data products.

Online_Linkage: https://alaska.usgs.gov/portal/project.php?project_id=33

Cross_Reference:

Citation_Information:

Originator: Parsons, Thomas
Publication_Date: 2011
Title: Field Activity Details for field activity A0111GA
Geospatial_Data_Presentation_Form: webpage
Series_Information:

Series_Name: Field Activity
Issue_Identification: A0111GA

Publication_Information:

Publication_Place: Santa Cruz, California
Publisher:

U.S. Geological Survey, Coastal and Marine Hazards and Resources Program (CMHRP) Pacific Coastal and Marine Science Center

Online_Linkage: https://cmgds.marine.usgs.gov/fan_info.php?fan=A0111GA

Cross_Reference:

Citation_Information:

Originator: Haeussler, P.J.
Originator: Parsons, T.
Originator: Finlayson, D.
Originator: Hart, P.
Originator: Chaytor, J.
Originator: Ryan, H.
Originator: Lee, H.
Originator: Labay, K.
Originator: Peterson, A.
Originator: Liberty, L.
Publication_Date: 2013
Title:

New Imaging of Submarine Landslides from the 1964 Earthquake Near Whittier, Alaska, and a Comparison to Failures in Other Alaskan Fjords

Geospatial_Data_Presentation_Form: journal
Series_Information:

Series_Name:

Submarine Mass Movements and Their Consequences. Advances in Natural and Technological Hazards Research

Issue_Identification: Vol 37

Publication_Information:

Publication_Place: Online
Publisher: Springer Nature

Other_Citation_Details:

Haeussler P.J. et al. (2014) New Imaging of Submarine Landslides from the 1964 Earthquake Near Whittier, Alaska, and a Comparison to Failures in Other Alaskan Fjords. In: Krastel S. et al. (eds) Submarine Mass Movements and Their Consequences. Advances in Natural and Technological Hazards Research, vol 37. Springer, Cham. https://doi.org/10.1007/978-3-319-00972-8_32

Online_Linkage: https://link.springer.com/chapter/10.1007/978-3-319-00972-8_32

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

We compared our data to 1995 NOAA hydrographic surveys H10655 and H10653, which were conventional single-beam surveys with a vertical datum of MLLW. Based on the original filename of the multibeam survey we inferred the vertical datum was NAVD88. However, we found the multibeam data was deeper than the 1995 surveys by a median value of 5.2 m, or 3 to 4 m in relatively flat areas of the surveys. Areas where the multibeam data was shallower could be found in places of expected change such as off river or stream mouths. A check of the original Caris project files used to generate the multibeam survey provided evidence that the vertical datum was likely MLLW rather than NAVD88. In this report, we assume the datum was MLLW.

Logical_Consistency_Report:

The data were examined for outliers and none were found. No formal logical accuracy tests were conducted. No data values are equal to -32767.

Completeness_Report:

We did not collect data in shallow areas, generally less than 20 m, or in Shotgun Cove. Where data is absent, we did not collect data.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Prior use of this multibeam echosounder system indicates an overall positional accuracy of about 1 m. A formal accuracy assessment of the horizontal positional information in the dataset has not been conducted. The USGS research vessel Alaskan Gyre was outfitted with an Applanix POS-MV position and motion compensation system. This system has post-processed horizontal positional accuracy of about 0.1 m and roll and pitch accuracies of about 0.02 degrees (https://www.applanix.com/downloads/products/specs/posmv/POS-MV-WaveMaster-II.pdf). Accuracies of final products may be lower due to water depth and total propagated uncertainties of the mapping systems, which include sonar system, position and motion compensation system, and navigation, as well as data processing that includes sounding cleaning, gridding, and datum transformations.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Finlayson, D.
Publication_Date: Unpublished material
Title: Passage Canal 5-meter multibeam data
Geospatial_Data_Presentation_Form: raster digital data

Type_of_Source_Media: Bathymetric Attributed Grid (BAG)
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20110815
Ending_Date: 20110822

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: 5MMB
Source_Contribution: This source constitutes the entire dataset.

Process_Step:

Process_Description:

In 2011 the USGS research vessel Alaskan Gyre mapped in Passage Canal, Alaska, using a Reson 7111 multibeam echosounder. USGS processed the bathymetry data post-cruise. The survey line files were imported into Caris HIPS and SIPS software for processing. Water column sound velocity data that was collected throughout the survey was applied to the bathymetry data. The data were cleaned of obvious bad soundings and the soundings were gridded into 5-m CUBE surface in Caris 7.1.1 and exported the data as a BAG surface. The dataset was converted from BAG format into GeoTIFF format using ArcGIS 10.0.2.

Source_Used_Citation_Abbreviation: 5MMB
Process_Date: 20120731

Process_Step:

Process_Description:

Datum was then transformed from WGS84 into NAD83 using ArcGIS 10.0.2 for use with other local datasets in NAD83. Original projection of UTM 6 remained unchanged.

Source_Used_Citation_Abbreviation: 5MMB
Process_Date: 20121115

Process_Step:

Process_Description:

Used bicubic interpolation to fill some small gaps within the dataset. The largest area filled was less than 4000 meters squared. Larger gaps still remain within the data. Processing was done using Global Mapper 20.1.

Source_Used_Citation_Abbreviation: 5MMB
Process_Date: 20210721

Process_Step:

Process_Description:

In preperation for the data release datum was transformed from NAD83 into WGS84 using ArcGIS 10.8.1 to create the final accompanying zipped GeoTIFF. The original projection of UTM 6 remained unchanged.

Source_Used_Citation_Abbreviation: 5MMB
Process_Date: 20211118

Process_Step:

Process_Description:

In preperation for the data release the included GeoTIFF was reprojected to geographic coordinates in WGS84 using the Project Raster tool in ArcGIS 10.8.1. This temporary GeoTIFF was then exported as an ASCII grid file using the Raster to ASCII tool in ArcGIS 10.8.1. The no data value in the ASCII grid is the default -9999.

Source_Used_Citation_Abbreviation: 5MMB
Process_Date: 20211118
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Keith Labay
Contact_Organization: U.S. Geological Survey, Alaska Science Center

Contact_Position: Physical Scientist
Contact_Address:

Address_Type: mailing and physical
Address: 4210 University Dr.
City: Anchorage
State_or_Province: AK
Postal_Code: 99508

Contact_Voice_Telephone: 907-786-7000
Contact_Electronic_Mail_Address: ascweb@usgs.gov

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:

Raster_Object_Type: Grid Cell
Row_Count: 1108
Column_Count: 2703

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:

UTM_Zone_Number: 6
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -147.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000
False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:

Abscissa_Resolution: 5
Ordinate_Resolution: 5

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: World Geodetic System 1984
Ellipsoid_Name: Geodetic Reference System 1980
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.2572

Vertical_Coordinate_System_Definition:

Depth_System_Definition:

Depth_Datum_Name: Mean lower low water
Depth_Resolution: 0.2
Depth_Distance_Units: meters
Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: PassageCanal_A0111GA_UTM6_WGS84.tif
Entity_Type_Definition: Values associated with GeoTIFF raster dataset
Entity_Type_Definition_Source: Author defined

Attribute:

Attribute_Label: Value
Attribute_Definition: Depth in meters to the seabed
Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -358.1
Range_Domain_Maximum: -7.6
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Value
Attribute_Definition: No data value
Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -32767
Enumerated_Domain_Value_Definition: No data
Enumerated_Domain_Value_Definition_Source: Author defined

Detailed_Description:

Entity_Type:

Entity_Type_Label: PassageCanal_A0111GA_WGS84.asc
Entity_Type_Definition: Values associated with ASCII grid raster dataset
Entity_Type_Definition_Source: Author defined

Attribute:

Attribute_Label: Value
Attribute_Definition: Depth in meters to the seabed
Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -358.0
Range_Domain_Maximum: -8.7
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Value
Attribute_Definition: No data value
Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition: No data
Enumerated_Domain_Value_Definition_Source: Author defined

Overview_Description:

Entity_and_Attribute_Overview:

This dataset contains bathymetric depth values for the western part of Passage Canal near the city of Whittier, Alaska. Values are in negative meters and measured relative to the Mean Lower Low Water.

Entity_and_Attribute_Detail_Citation: Author defined

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey, Alaska Science Center

Contact_Address:

Address_Type: mailing and physical
Address: 4210 University Dr.
City: Anchorage
State_or_Province: AK
Postal_Code: 99508

Contact_Voice_Telephone: 907-786-7020
Contact_Electronic_Mail_Address: ascweb@usgs.gov

Resource_Description:

This dataset is available for download as zipped files in GeoTIFF or ASCII grid format. The ASCII grid file is in geographic WGS84. The GeoTIFF is accompanied by an optional world file with the .tfw extension. The ASCII grid is accompanied by a .prj file that must be kept together with the grid to provide projection information.

Distribution_Liability:

Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: GeoTIFF
Format_Information_Content:

Data are distributed in a Zip package containing data in GeoTIFF and ASCII formats and FGDC metadata in XML and HTML formats.

File_Decompression_Technique: LZW
Transfer_Size: 24.00

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: https://doi.org/10.5066/P9458THH

Digital_Form:

Digital_Transfer_Information:

Format_Name: ASCII
Format_Information_Content:

Data are distributed in a Zip package containing data in GeoTIFF and ASCII formats and FGDC metadata in XML and HTML formats.

File_Decompression_Technique: No compression applied
Transfer_Size: 24.00

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: https://doi.org/10.5066/P9458THH

Fees: None

Technical_Prerequisites:

It is recommended that GIS software such as the free open source program QGIS be used to work with this data.

Gridded Data from a 2011 Multibeam Bathymetric Survey of the Western Part of Passage Canal, Near Whittier, Alaska

Metadata: