Andrew C. Ritchie
Crescent H. Moegling
Guy R. Cochrane
2015
Bathymetry Hillshade--Admiralty Inlet, Washington
1.0
GeoTiff
Guy R. Cochrane
Megan N. Dethier
Timothy O. Hodson
Kristine J. Kull
Nadine E. Golden
Andrew C. Ritchie
Crescent H. Moegling
Robert E. Pacunski
2015
Southern Salish Sea Habitat Map Series--Admiralty Inlet
map
Scientific Investigations Map
OFR 2015-1073
Reston, VA
U.S. Geological Survey
https://pubs.usgs.gov/ofr/2015/1073/
Guy R. Cochrane
2014
Southern Salish Sea Habitat Map Series Data Catalog
database
Data Series
DS XXX
Reston, VA
U.S. Geological Survey
https://pubs.usgs.gov/ds/XXX/
This part of SIM XXXX presents data for the bathymetry and shaded-relief maps (see sheet 1, SIM XXXX) of the Admiralty Inlet map area. The raster data file for the bathymetry map is included in "Bathymetry_AdmiraltyInlet.zip." The raster data file for the shaded-relief map is included in "BathymetryHS_AdmiraltyInlet.zip." Both are accessible from https://pubs.usgs.gov/ds/781/AdmiraltyInlet/data_catalog_AdmiraltyInlet.html.
The bathymetry and shaded-relief maps of the Admiralty Inlet map area in the southern Salish Sea was generated from topography extracted from a Digital Elevation Model (DEM) by Finlayson (2005) and bathymetry data collected more recently by the National Oceanic and Atmospheric Administration (NOAA) (fig. 2-1). Surveys conducted in the Admiralty Inlet map area by the NOAA Ship Rainier include H11188 (NOAA, 2002), H11040 (NOAA, 2002b), H11039 (NOAA 2002c), H11038 (NOAA 2002d) and H11375 (NOAA 2005). Multibeam sonar data were acquired by the Ranier and its survey launches using Reson 8101, Reson 8125, and Elac 1180 multibeam systems.
These data are intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems or other software to identify bathymetric features.
2000
2009
ground condition
As needed
-122.959728
-122.554836
48.321176
48.050423
Global Change Master Directory (GCMD)
Oceans > Bathymetry/SeafloorTopography > Bathymetry
Oceans > Bathymetry/SeafloorTopography > Seafloor Topography
General
Marine Geology
Marine Habitat
Multibeam
Geology
Bathymetry
Water Depth
Ocean Floor Topography
U.S. Geological Survey
USGS
Pacific Coastal and Marine Science Center
CSMP
ISO 19115 Topic Category
geoscientificInformation
imageryBaseMapsEarthCover
oceans
Geographic Names Information System (GNIS)
Admiralty Inlet
Puget Sound
Salish Sea
Washington
None
Please recognize the U.S. Geological Survey (USGS); and the National Oceanic and Atmospheric Administration (NOAA). USGS-authored or produced data and information are in the public domain. This information is not intended for navigational purposes.
Read and fully comprehend the metadata prior to data use. Uses of these data should not violate the spatial resolution of the data.
Where these data are used in combination with other data of different resolution, the resolution of the combined output will be limited by the lowest resolution of all the data.
Acknowledge the USGS and NOAA in products derived from these data. Share data products developed using these data with the U.S. Geological Survey.
This database has been approved for release and publication by the Director of the USGS. Although this database has been subjected to
rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and
review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any
damages resulting from its authorized or unauthorized use.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document these data in nonproprietary form, as
well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.
Guy R. Cochrane
U.S. Geological Survey,
Pacific Coastal and Marine Science Center
Physical Scientist
mailing and physical address
400 Natural Bridges Dr.
Santa Cruz
CA
95060-5792
USA
(831) 460-7554
(831) 427-4709
gcochrane@usgs.gov
https://pubs.usgs.gov/ds/XXX/images/Bathymetry_AdmiraltyInlet.jpg
Not applicable for raster data.
Unspecified
Complete
Estimated to be no less than 2 m, owing to 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.
Estimated to be no less than 20 cm, owing to 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.
The horizontal datum for Rainier surveys is the North American Datum of 1983 (NAD83). Differential GPS (DGPS) was the sole method of positioning. Differential corrections from U.S. Coast Guard beacons at Whidbey Island (transmitting on 302 kHz), and Robinson Point (transmitting on 323 kHz) were utilized during surveys. The vertical datum for the Rainier surveys is Mean Lower-Low Water (MLLW). The operating National Water Level Observation Network (NWLON) primary tide station at Port Townsend, AK (944-4900) served as control for datum determination and as the primary source for water level reducers. In addition to Rainier surveys, survey H11801 (NOAA 2009), was conducted using the Kvichak Defender IV for multibeam sonar and sound velocity data collection in waters deeper than 4 meters. Complete multibeam coverage was verified while in the field using a CARIS workstation aboard Kvichak Defender IV, with subsequent verifications performed shore-side on non-survey days. A CODA F-180 motion reference unit was mounted in a water-resistant case to the mid-ships port gunwale immediately adjacent to the Kongsberg EM3002 side-pole mount. The F-180 GPS antennae were mounted in an along-ship orientation with a 2 meter separation between primary and secondary antennae. The R/V Storm was used for gap-fill surveys on the 20-27th January 2009, 3-6 February 2009 and 17-18 February 2009. Storm was configured with a dual-head Reson 7125 MBES and tasked with acquisition of least depths on rocky shoals at the approach to Oak Harbor channel as well as performing gap-fills after conclusion of large boat operations by Kvichak Defender IV. R/V Storm employed Hypack for navigation and raw data acquisition, POS/MV was used for motion and heading and a Sea-Bird CTD for sound speed profiles. Once all the bathymetric-surface models were transformed to a common projection and datum, the files were merged into one overall 2-m-resolution bathymetric-surface model, merged with an onshore DEM from Finlayson (2005), and clipped to the boundary of the map area. Difference calculations of the overlapping bathymetry grids showed that there is good agreement between surveys, even though the surveys were conducted at different times.
2012
Guy R. Cochrane
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Research Geophysicist
mailing and physical address
400 Natural Bridges Dr.
Santa Cruz
CA
95060-5792
USA
(831) 460-7554
gcochrane@usgs.gov
Merge all bathymetry data into 2-m-resolution bathymetry grid and clip to the Admiralty Inlet map boundary. To create the shaded-relief imagery, an illumination having an azimuth of 315 degrees and 45 degrees above the horizon was applied to the bathymetry grid.
2010
Guy R. Cochrane
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Geophysicist
mailing and physical address
400 Natural Bridges Dr.
Santa Cruz
CA
95060-5792
USA
(831) 460-7554
gcochrane@usgs.gov
Raster
Grid Cell
Universal Transverse Mercator
10
0.9996
-123.00000
0.00000
500000.0
0.00
coordinate pair
2.0
2.0
Meters
none
none
20140610
20140610
Guy R. Cochrane
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Geophysicist
mailing and physical address
400 Natural Bridges Dr.
Santa Cruz
CA
95060-5792
USA
(831) 460-7554
(831) 427-4709
gcochrane@usgs.gov
Content Standard for Digital Geospatial Metadata
("CSDGM version 2")
FGDC-STD-001-1998
universal time