1-Meter Bathymetric Digital Elevation Model: Elkhorn Slough, California, 2005

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Abstract/Contents

Abstract
This raster dataset is a 1-meter resolution digital elevation model (DEM) containing multibeam bathymetry data for the Elkhorn Slough region of Monterey Bay, California. The survey for Elkhorn Slough was conducted 8/12/2005 - 8/15/2005. Elkhorn Slough, one of the largest remaining coastal wetlands in California, has been directly subjected to tidal scour since the opening of Moss Landing Harbor in 1946. This erosion endangers the habitat of several rare and endangered species and disrupts the wetland ecosystem as a whole. In 2003, the Seafloor Mapping Lab of California State University, Monterey Bay created the most detailed bathymetry model of the Slough to date using a combination of multi-beam sonar, single-beam sonar and aerial photography. This layer was created as part of the California Seafloor Mapping Project.
Purpose
This project was conducted to determine changes in the pattern of erosion and deposition in Elkhorn Slough since surveys conducted in 1993, 2001 and 2003. Adjustments were made to the previously released 1m bathymetry grids to account for a 35cm data shift

Description

Type of resource cartographic, software, multimedia
Form Raster Dataset
Place Seaside, California, US
Publisher Seafloor Mapping Lab
Date valid 2005
Publication date 2005
Language English
Digital origin born digital
Map data Scale not given. ; EPSG::32610 W 121°47ʹ6ʺ--W 121°44ʹ25ʺ/N 36°51ʹ28ʺ--N 36°48ʹ33ʺ, Scale not given ; EPSG::4326

Creators/Contributors

Creator Seafloor Mapping Lab

Subjects

Subject Continental margins
Subject Bathymetric maps
Subject Digital elevation models
Subject Elkhorn Slough (Calif.)
Subject Monterey Bay (Calif.)
Subject 2005
Subject Elevation
Subject Imagery and Base Maps
Subject Inland Waters
Genre Geospatial data
Genre Cartographic dataset

Bibliographic information

Supplemental information

Bathymetric and backscatter (sidescan) data were collected aboard the R/V VenTresca using a Reson 8101 multibeam echosounder. Prior to data collection a series of survey lines were created using Hypack Max GOLD from Coastal Oceanographics. An Applanix POS/MV was used to position the vessel during data collection and accounted for vessel motion such as heave, pitch, and roll (position accuracy ± 2m, pitch, roll and heading accuracy ±0.02°, heave accuracy ± 5% or 5cm). NobelTec Tides and Currents software provided NOAA predicted tides to account for tide cycle fluctuations and sound velocity profiles were collected with an Applied Microsystems SVPlus sound velocimeter.

Bathymetry products are presented according to standard California State Mapping Project specifications, including depth-dependent resolutions of 2m for data from the 0-85m depth range, 5m for 80-250m depth range, and 10m for depths of 230-1500m. A comprehensive 5m data set was produced for the total survey coverage only if per block data exceeded 85m depth and 5m resolution products were included.
WGS84 Cartographics This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
Location https://purl.stanford.edu/np727vv0751

Access conditions

Use and reproduction
These data are licensed by Stanford Libraries and are available to Stanford University affiliates only. Affiliates are limited to current faculty, staff and students. Non affiliates seeking access should contact the publisher directly. These data may not be reproduced or used for any purpose without permission.
Copyright
Copyright ownership resides with the originator.

Preferred citation

Seafloor Mapping Lab (2010). 1-Meter Bathymetric Digital Elevation Model: Elkhorn Slough, California, 2005. Seafloor Mapping Lab. Available at: http://purl.stanford.edu/np727vv0751

Collection

California Seafloor Mapping Project

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