Dataset description: Multibeam line files from Cross Sound, Alaska collected during USGS field activity 2015-629-FA

In 2015 the U.S. Geological Survey (USGS), Pacific Coastal and Marine Science Center (PCMSC) in cooperation with the Alaska Department of Fish and Game (ADFG) collected bathymetry and acoustic backscatter data offshore Cross Sound in southeast Alaska using an Reson 7111 multibeam echosounder mounded to the ADFG R/V Solstice. The survey was conducted to map the offshore expression of the Queen Charlotte fault system that runs for approximately 500 kilometers off the coast of southeast Alaska and British Columbia. This data release provides the processed multibeam line files in GSF format.

Keywords	sea-floor characteristics, multibeam sonar, geospatial datasets, marine geophysics, bathymetry, bathymetry measurement
Data types	Multibeam
Format	GSF
Amount	2.1 GB

Contacts

Contact	Peter Dartnell PCMSC_data@usgs.gov

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Location of materials and files

Public files	https://doi.org/10.5066/P1ED3GXB https://cmgds.marine.usgs.gov/data-releases/datarelease/10.5066-P1ED3GXB/
Metadata	https://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/CMGDS_DR_tool/DR_P1ED3GXB/CrossSound_USGS_2015_GSF_multibeam_line_files_metadata.xml Outline - Questions and answers - Text - XML

Activities and equipment

Activity	Equipment
2015-629-FA	Reson 7111 The SeaBat 7111 produces bathymetry data suitable for the generation of high resolution hydrographic charts exceeding international standards in water depths from 3 to 1000m. Operating at 100kHz, the system forms 101, 201 high-density, equi-angle or 301 equi-distant beams to cover a total receive sector of 150¬∞. The system is pitch stabilized. The SeaBat 7111 transducer array is comprised of a cylindrical receive array and a linear transmitter array, mounted together on a support cradle that provides mounting points to the vessel. Lightweight and portable, the array can be installed temporarily over the side of a vessel of opportunity a first for a system in this frequency range.

Activity

Equipment

2015-629-FA

Reson 7111

The SeaBat 7111 produces bathymetry data suitable for the generation of high resolution hydrographic charts exceeding international standards in water depths from 3 to 1000m. Operating at 100kHz, the system forms 101, 201 high-density, equi-angle or 301 equi-distant beams to cover a total receive sector of 150¬∞. The system is pitch stabilized. The SeaBat 7111 transducer array is comprised of a cylindrical receive array and a linear transmitter array, mounted together on a support cradle that provides mounting points to the vessel. Lightweight and portable, the array can be installed temporarily over the side of a vessel of opportunity a first for a system in this frequency range.