BackscatterD [CSUMB Swath]--Monterey Canyon and Vicinity Map Area, California

Dates

Publication Date: 2015
Start Date: 2008
End Date: 2009

Citation

Golden, N.E., compiler, 2016, California State Waters Map Series Data Catalog: U.S. Geological Survey Data Series 781, http://pubs.usgs.gov/ds/781/.

Summary

This part of DS 781 presents data for the acoustic-backscatter map of Monterey Canyon and Vicinity map area, California. Backscatter data are provided as separate grids depending on mapping system and processing method. These metadata describe acoustic-backscatter data collected by California State University, Monterey Bay and processed by the U.S. Geological Survey. The raster data files are included in "BackscatterD_CSUMB_SWATH_MontereyCanyon.zip," which is accessible from http://dx.doi.org/10.5066/F7XD0ZQ4. These data accompany the pamphlet and map sheets of Dartnell, P., Maier, K.L., Erdey, M.D., Dieter, B.E., Golden, N.E., Johnson, S.Y., Hartwell, S.R., Cochrane, G.R., Ritchie, A.C., Finlayson, D.P., Kvitek, R.G., Sliter, R.W., [...]

Summary

This part of DS 781 presents data for the acoustic-backscatter map of Monterey Canyon and Vicinity map area, California. Backscatter data are provided as separate grids depending on mapping system and processing method. These metadata describe acoustic-backscatter data collected by California State University, Monterey Bay and processed by the U.S. Geological Survey. The raster data files are included in "BackscatterD_CSUMB_SWATH_MontereyCanyon.zip," which is accessible from http://dx.doi.org/10.5066/F7XD0ZQ4. These data accompany the pamphlet and map sheets of Dartnell, P., Maier, K.L., Erdey, M.D., Dieter, B.E., Golden, N.E., Johnson, S.Y., Hartwell, S.R., Cochrane, G.R., Ritchie, A.C., Finlayson, D.P., Kvitek, R.G., Sliter, R.W., Greene, H.G., Davenport, C.W., Endris, C.A., and Krigsman, L.M. (P. Dartnell and S.A. Cochran, eds.), 2016, California State Waters Map Series—Monterey Canyon and Vicinity, California: U.S. Geological Survey Open-File Report 2016–1072, 48 p., 10 sheets, scale 1:24,000, http://dx.doi.org/10.3133/ofr20161072.

The acoustic-backscatter map of Monterey Canyon and Vicinity, California, were generated from acoustic-backscatter data collected by the U.S. Geological Survey (USGS), by Monterey Bay Aquarium Research Institute (MBARI), and by California State University, Monterey Bay (CSUMB). Mapping for the entire map area was completed between 1998 and 2014 using a combination of 30-kHz Simrad EM-300 and 200-kHz/400-kHz Reson 7125 multibeam echosounders, as well as 234-kHz and 468-kHz SEA SWATHplus bathymetric sidescan-sonar systems. The CSUMB mapping missions were completed in 2008 and 2009. Within the final imagery, brighter tones indicate higher backscatter intensity, and darker tones indicate lower backscatter intensity. The intensity represents a complex interaction between the acoustic pulse and the seafloor, as well as characteristics within the shallow subsurface, providing a general indication of seafloor texture and composition. Backscatter intensity depends on the acoustic source level; the frequency used to image the seafloor; the grazing angle; the composition and character of the seafloor, including grain size, water content, bulk density, and seafloor roughness; and some biological cover. Harder and rougher bottom types such as rocky outcrops or coarse sediment typically return stronger intensities (high backscatter, lighter tones), whereas softer bottom types such as fine sediment return weaker intensities (low backscatter, darker tones).

Contacts

Point of Contact :: PCMSC Science Data Coordinator
Originator :: Peter Dartnell, Andrew C Ritchie, David P. Finlayson, Rikk G. Kvitek
Metadata Contact :: PCMSC Science Data Coordinator
Publisher :: U.S. Geological Survey
Distributor :: U.S. Geological Survey - ScienceBase

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BackscatterD_CSUMB_Swath_MontereyCanyon_metadata.xml Original FGDC Metadata	View	23.76 KB	application/fgdc+xml
BackscatterD_CSUMB_Swath_MontereyCanyon_metadata_faq.html		32.26 KB	text/html
BackscatterD_CSUMB_Swath_MontereyCanyon_metadata.html		56.26 KB	text/html
BackscatterD_CSUMB_Swath_MontereyCanyon_metadata.txt		22.93 KB	text/plain

Extension: BackscatterD_CSUMB_SWATH_MontereyCanyon.zip
BackscatterD_CSUMB_SWATH_MontereyCanyon.tfw		90 Bytes
BackscatterD_CSUMB_SWATH_MontereyCanyon.tif		125.84 MB
BackscatterD_CSUMB_SWATH_MontereyCanyon.tif.aux.xml		0 Bytes
BackscatterD_CSUMB_SWATH_MontereyCanyon.tif.ovr		0 Bytes
BackscatterD_CSUMB_SWATH_MontereyCanyon.tif.vat.dbf		0 Bytes
BackscatterD_CSUMB_SWATH_MontereyCanyon.tif-ColorRamp.SLD		0 Bytes
BackscatterD_CSUMB_SWATH_MontereyCanyon.tif.xml		22.32 KB

Related External Resources

Type: ArcGIS Web Services

ArcGIS Web Services	https://www.sciencebase.gov/arcgis/rest/services/Catalog/554cffcde4b082ec54129dfd/MapServer
ArcGIS Web Services	https://www.sciencebase.gov/arcgis/rest/services/Catalog/554cffcde4b082ec54129dfd/MapServer?f=lyr&v=9.3

Type: Browse Image

Acoustic backscatter imagery of Monterey Canyon and Vicinity.	https://www.sciencebase.gov/catalog/file/get/5570970be4b0d9246a9fd28a?name=BackscatterD_CSUMB_MontereyCanyon.jpg&allowOpen=true

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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.

BackscatterD [CSUMB Swath]--Monterey Canyon and Vicinity Map Area, California

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