Eleyne L. Phillips
Guy R. Cochrane
2012
Seafloor character--Hueneme Canyon and Vicinity, California
GeoTiff
Data Series
DS 781
Reston, VA
U.S. Geological Survey
https://pubs.usgs.gov/ds/781/
https://pubs.usgs.gov/ds/781/HuenemeCanyon/data_catalog_HuenemeCanyon.html
https://pubs.usgs.gov/ds/781/HuenemeCanyon/data/SeafloorCharacter_HuenemeCanyon.zip
Nadine E. Golden
2013
California State Waters Map Series Data Catalog
database
Data Series
DS 781
Reston, VA
U.S. Geological Survey
https://pubs.usgs.gov/ds/781/
https://pubs.usgs.gov/ds/781/HuenemeCanyon/data_catalog_HuenemeCanyon.html
This part of DS 781 presents data for the seafloor-character map of the Hueneme Canyon and Vicinity map area, California. The raster data file is included in "SeafloorCharacter_HuenemeCanyon.zip," which is accessible from http://pubs.usgs.gov/ds/781/HuenemeCanyon/data_catalog_HuenemeCanyon.html. These data accompany the pamphlet and map sheets of Johnson, S.Y., Dartnell, P., Cochrane, G.R., Golden, N.E., Phillips, E.L., Ritchie, A.C., Kvitek, R.G., Greene, H.G., Krigsman, L.M., Endris, C.A., Clahan, K.B., Sliter, R.W., Wong, F.L., Yoklavich, M.M., and Normark, W.R. (S.Y. Johnson, ed.), 2012, California State Waters Map Series-—Hueneme Canyon and Vicinity, California: U.S. Geological Survey Scientific Investigations Map 3225, 41 p., 12 sheets, scale 1:24,000, https://pubs.usgs.gov/sim/3225/.
This raster-format seafloor-character map shows four substrate classes of the Hueneme Canyon and Vicinity map area. The substrate classes mapped in this area have been further divided into the following California Marine Life Protection Act depth zones and slope classes: Depth Zone 2 (intertidal to 30 m), Depth Zone 3 (30 to 100 m), Depth Zone 4 (100 to 200 m), Depth Zone 5 (greater than 200 m), Slope Class 1 (0 degrees-5 degrees), Slope Class 2 (5 degrees-30 degrees), Slope Class 3 (30 degrees-60 degrees), and Slope Class 4 (60 degrees-90 degrees). Depth Zone 1 (intertidal) is not present in this map area. The map is created using a supervised classification method described by Cochrane (2008).
References Cited:
California Department of Fish and Game, 2008, California Marine Life Protection Act master plan for marine protected areas; Revised draft: California Department of Fish and Game, accessed April 5 2011, at http://www.dfg.ca.gov/mlpa/masterplan.asp.
Cochrane, G.R., 2008, Video-supervised classification of sonar data for mapping seafloor habitat, in Reynolds, J.R., and Greene, H.G., eds., Marine habitat mapping technology for Alaska: Fairbanks, University of Alaska, Alaska Sea Grant College Program, p. 185-194, accessed April 5, 2011, at http://doc.nprb.org/web/research/research%20pubs/615_habitat_mapping_workshop/Individual%20Chapters%20High-Res/Ch13%20Cochrane.pdf.
Sappington, J.M., Longshore, K.M., and Thompson, D.B., 2007, Quantifying landscape ruggedness for animal habitat analysis--A case study using bighorn sheep in the Mojave Desert: Journal of Wildlife Management, v. 71, p. 1419-1426.
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 local seafloor character.
Additional information about the field activities from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=Z206SC
https://cmgds.marine.usgs.gov/fan_info.php?fan=Z307SC
https://cmgds.marine.usgs.gov/fan_info.php?fan=Z708SC
https://cmgds.marine.usgs.gov/fan_info.php?fan=S1C08SC
https://cmgds.marine.usgs.gov/fan_info.php?fan=Z107SC
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology.
2006
2007
ground condition
As needed
-119.337851
-119.139723
34.222965
34.058225
Global Change Master Directory (GCMD)
Bathymetry
Seafloor Topography
Acoustic Reflectivity
ISO 19115 Topic Category
geoscientificInformation
environment
oceans
imageryBaseMapsEarthCover
Marine Realms Information Bank (MRIB) keywords
seabed
multibeam echo sounder
video observation
photographic sampling
Data Categories for Marine Planning
distributions
substrate
bathymetry and elevation
physical habitats and geomorphology
USGS Thesaurus
sonar methods
image mosaics
interferometric sonar
marine geophysics
sea-floor characteristics
sea-floor acoustic reflectivity
bathymetry measurement
bathymetry
videos
underwater photography
ecosystems
maps and atlases
geospatial datasets
Coastal and Marine Ecological Classification Standard (CMECS)
Marine Nearshore Subtidal
Marine Offshore Subtidal
Transform Continental Margin
Continental/Island Shelf
Rock Substrate
Unconsolidated Mineral Substrate
Geographic Names Information System (GNIS)
Hueneme Canyon
Ventura
Port of Hueneme
Oxnard
California
Geographic Names Information System (GNIS)
Hueneme Canyon
Ventura
Port of Hueneme
Oxnard
State of California
Pacific Ocean
Coastal and Marine Ecological Classification Standard (CMECS)
Southern California Ecoregion
Coastal and Marine Ecological Classification Standard (CMECS)
Substrate
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.
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060-5792
US
831-427-4747
pcmsc_data@usgs.gov
https://pubs.usgs.gov/ds/781/HuenemeCanyon/images/SeafloorCharacter_HuenemeCanyon.jpg
Seafloor character of Hueneme Canyon and Vicinity
JPEG
Microsoft Windows Server 2008 R2 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.0.0.2414
Samuel Y. Johnson
Peter Dartnell
Guy R. Cochrane
Nadine E. Golden
Eleyne L. Phillips
Andrew C. Ritchie
Rikk G. Kvitek
H. Gary Greeene
Lisa M. Krigsman
Charles A. Endris
Kevin B. Clahan
Ray W. Sliter
Florence L. Wong
Mary M. Yoklavich
William R. Normark
2012
California State Waters Map Series--Hueneme Canyon and Vicinity, California
pamphlet and map sheets
Scientific Investigations Map
3225
Reston, VA
U.S. Geological Survey
http://pubs.usgs.gov/sim/3225/
Pixel resolution 2 m.
Classification was done on the basis of training samples delineated by interpreter. The classification was performed using mathematical algorithms then hand-edited by the interpreter to remove noise.
Total coverage for the survey area is 100%. Survey area is defined by coverage of both the multibeam bathymetry and backscatter datasets.
Positional information reflects the position of the camera and was collected using a still photo camera, WAAS-enabled GSP unit, recording at between 1 to 2 nm. DGPS (WAAS) accuracy for position is less than 3 meters. (From Garmin GPSMAP 76C/76CS Specifications, M01-10108-00, Rev0304, https://buy.garmin.com/shop/store/assets/pdfs/specs/gpsmap76c_76cs_spec.pdf).
Peter Dartnell
Eleyne L. Phillips
Andrew C. Ritchie
Rikk G. Kvitek
Samuel Y. Johnson
2012
Bathymetry--Hueneme Canyon and Vicinity, California
Data Series
DS 781
Reston, VA
U.S. Geological Survey
https://pubs.usgs.gov/ds/781/
https://pubs.usgs.gov/ds/781/HuenemeCanyon/data_catalog_HuenemeCanyon.html
https://pubs.usgs.gov/ds/781/HuenemeCanyon/data/Bathymetry_HuenemeCanyon.zip
digital file of gridded bathymetry data (ArcInfo GRID)
2006
2009
ground condition
bathy
Gridded bathymetry data used for interpretations.
Peter Dartnell
Eleyne L. Phillips
Andrew C. Ritchie
Rikk G. Kvitek
Samuel Y. Johnson
2012
Backscatter A [CSUMB]--Hueneme Canyon and Vicinity, California
Data Series
DS 781
Reston, VA
U.S. Geological Survey
https://pubs.usgs.gov/ds/781/
https://pubs.usgs.gov/ds/781/HuenemeCanyon/data_catalog_HuenemeCanyon.html
https://pubs.usgs.gov/ds/781/HuenemeCanyon/data/BackscatterA_CSUMB_HuenemeCanyon.zip
digital file of gridded amplitude data (ArcInfo GRID)
2006
2007
ground condition
backscatterA
Gridded backscatter data used for interpretations.
Peter Dartnell
Eleyne L. Phillips
Andrew C. Ritchie
Rikk G. Kvitek
Samuel Y. Johnson
2012
Backscatter B [USGS]--Hueneme Canyon and Vicinity, California
Data Series
DS 781
Reston, VA
U.S. Geological Survey
https://pubs.usgs.gov/ds/781/
https://pubs.usgs.gov/ds/781/HuenemeCanyon/data_catalog_HuenemeCanyon.html
https://pubs.usgs.gov/ds/781/HuenemeCanyon/data/BackscatterB_USGS_HuenemeCanyon.zip
digital file of gridded amplitude data (ArcInfo GRID)
2006
2006
ground condition
backscatterB
Gridded backscatter data used for interpretations.
Peter Dartnell
James E. Conrad
Nadine E. Golden
Eleyne L. Phillips
Michael E. Boyle
Brian E. Edwards
Merit McCrea
2013
Video observations from USGS field activity z107sc
Data Series
DS 781
Reston, VA
U.S. Geological Survey
https://pubs.usgs.gov/ds/781/
https://pubs.usgs.gov/ds/781/video_observations/data_catalog_video_observations.html
https://pubs.usgs.gov/ds/781/video_observations/data/z107sc_video_observations.zip
vector digital data
20070626
20070715
ground condition
z107sc
underwater video imagery used for interpretations.
Eleyne L. Phillips
Guy R. Cochrane
Peter Dartnell
Nadine E. Golden
Lisa M. Krigsman
2012
Video observations from USGS field activity s1c08sc
Data Series
DS 781
Reston, VA
U.S. Geological Survey
https://pubs.usgs.gov/ds/781/
https://pubs.usgs.gov/ds/781/video_observations/data_catalog_video_observations.html
https://pubs.usgs.gov/ds/781/video_observations/data/s1c08sc_video_observations.zip
vector digital data
20070626
20070715
ground condition
s1c08sc
underwater video imagery used for interpretations.
The seafloor-character map was produced using video-supervised maximum likelihood classification of the bathymetry and backscatter intensity of return from sonar systems. The classification was supervised using signatures defined by hand-drawn polygons located through sediment samples and video-observation ground-truthing, applying methodology described in Cochrane (2008), available at http://doc.nprb.org/web/research/research%20pubs/615_habitat_mapping_workshop/Individual%20Chapters%20High-Res/Ch13%20Cochrane.pdf.
The two variants used in this classification were backscatter intensity and derivative rugosity. Rugosity measures terrain ruggedness as the variation in three-dimensional orientation of grid cells within a neighborhood. Vector analysis is used to calculate the dispersion of vectors normal (orthogonal) to grid cells within the specified neighborhood. This method effectively captures variability in slope and aspect into a single measure. Ruggedness values in the output raster map can range from 0 (no terrain variation) to 1 (complete terrain variation). The calculation was performed using the Terrain Ruggedness (VRM) tool (for details, see Sappington and others, 2007).
Classes I, II, and III were delineated using multivariate analysis. Class IV values were depicted on the basis of visual identification using both bathymetry and backscatter (slight depression in the seafloor, very high backscatter return). The resulting map (gridded at 2 m) was cleaned by hand to remove data-collection artifacts (for example, trackline nadir). Editing was performed in Photoshop, with which individual pixels were selected and values adjusted to remove noise. Selection occurred without antialiasing, and the resulting grid was identical but for the edited pixels.
The four seafloor classes were then colored to indicate which of the five California MLPA depth zones they are located in: Depth Zone 2 (intertidal to 30 m), Depth Zone 3 (30 to 100 m), Depth Zone 4 (100 to 200 m), or Depth Zone 5 (greater than 200 m). These were further subdivided into one of the following slope classes: Slope Class 1 (0 degrees-5 degrees), Slope Class 2 (5 degrees-30 degrees), Slope Class 3 (30 degrees-60 degrees), or Slope Class 4 (60 degrees-90 degrees). Depth Zone 1 (intertidal) is not represented in the region covered by this block.
bathy
backscatterA
backscatterB
z107sc
s1c08sc
200910
Metadata was modified to bring up to current USGS PCMSC standards. Information for accompanying Scientific Investigations Report added to Abstract and Cross Reference sections. Point of Contact information was updated. USGS Thesaurus and keywords were added, and Process Steps were refined. Details about different Network Resource Name links was given in the Access Instructions section. Phone number for Metadata Contact was corrected. Minor typos were corrected. No data information was changed.
20180926
Susan A Cochran
U.S. Geological Survey, Pacific Coastal and Marine Science Center
mailing and physical
2885 Mission St.
Santa Cruz
CA
95060
United States
831-460-7545
scochran@usgs.gov
Raster
Pixel
8944
8944
1
WGS 1984 UTM Zone 11N
0.9996
-117.0
0.0
500000.0
0.0
coordinate pair
0.000000002220024164500956
0.000000002220024164500956
Meter
D WGS 1984
WGS 1984
6378137.0
298.257223563
b67_sfc_d200.vat
The shapefile attributes include VALUE - code for the seafloor character classes, COUNT - number of pixels, SLOPE - slope classes, DEPTH_ZONE - depth zones, SUBSTRATE - substrate classes, SUBST_DESC - short description of substrate classes, and FULL_DESC - detailed description of substrate classes. The shapefile can be added to any Esri ArcMap project.
Esri
Rowid
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
VALUE
This seafloor-character class was produced using video-supervised maximum-likelihood classification of the bathymetry and backscatter (intensity of return) signals from sonar systems. Derivative roughness (rugosity) and backscatter intensity were used as variants in the classification. The resulting four substrate classes (1-4) were divided into the Depth Zones (see Attribute: DEPTH_ZONE) by adding to the original grid value in increments of 10. Depth Zone 2, add 0 to grid value; Depth Zone 3, add 10 to grid value; Depth Zone 4, add 20 to grid value; and Depth Zone 5, add 30 to grid value. The resulting grid was further classified into Slope Classes (see Attribute: SLOPE) by adding to the classified raster values (including depth zones) in increments of 50. Slope Class 1, add 0 to grid value; Slope Class 2, add 50 to grid value; Slope Class 3, add 100 to grid value; and Slope Class 4, add 150 to grid value.
Esri
1
181
Integers 1 - 181 on the basis of classification method described in chapter 4 and sheet 5 of SIM 3225 ("California State Waters Map Series--Hueneme Canyon and Vicinity"), available at http://pubs.usgs.gov/sim/3225/.
COUNT
The number of pixels (2 m x 2 m size grid cell) represented in each seafloor class (see Attribute: VALUE).
Esri
7
20796093
Integers 7 - 20796093 pixel count.
SLOPE
The slope zones for the final seafloor-character map grid were identified on the basis of the smoothed bathymetry grid. The smoothing was done by applying focal statistics to the original bathymetry grid. The tool uses a moving window and calculates the mean value of the central pixel within a circular neighborhood of 20 m radius along the whole raster map. The resulting raster map represents a smoothed value highlighting overall trends and eliminates local varieties in the terrain (such as higher slopes along rock outcrops). Slope class values are: 1 (0 degrees to 5 degrees), 2 (5 degrees to 30 degrees), 3 (30 degrees to 60 degrees), or 4 (60 degrees to 90 degrees).
USGS
1
4
Integer values 1-4 representing slope classes as described above.
DEPTH_ZONE
The depth zones for the final seafloor-character map grid were identified on the basis of the smoothed bathymetry grid. The smoothing was done by applying focal statistics to the original bathymetry grid. The tool uses a moving window and calculates the mean value of the central pixel within a circular neighborhood of 20 m radius along the whole raster map. The resulting raster map represents a smoothed value highlighting overall trends and eliminates local varieties in the terrain (such as varying depths along rock outcrops). Depth Zone values are: Depth Zone 1, intertidal; Depth Zone 2, intertidal to 30 m; Depth Zone 3, 30 to 100 m; Depth Zone 4, 100 to 200 m; and Depth Zone 5, deeper than 200 m (California Department of Fish and Game, 2008).
USGS
2
5
Integer values 2-5 representing slope classes as described above.
SUBSTRATE
Coded values of the substrate classes. Class 1, Fine- to medium-grained smooth sediment; Class 2, Mixed smooth sediment and rock; Class 3, Rock and boulder, rugose; Class 4, Anthropogenic features
USGS
1
4
Integer values 1-4 representing substrate classes as described above.
SUBST_DESC
Summary description of the four substrate classes coded by the attribute SUBSTRATE. Class 1, Fine- to medium-grained smooth sediment; Class 2, Mixed smooth sediment and rock; Class 3, Rock and boulder, rugose; Class 4, Anthropogenic features
USGS
Names are in text form, maximum length: 50
FULL_DESC
Detailed description of the four substrate classes coded by the attribute SUBSTRATE. Class 1, Low backscatter, low rugosity, typically mud to medium-grained sand, often rippled and/or burrowed; Class 2, Moderate to very high backscatter, low rugosity, typically coarse-grained sand, gravel, cobble and bedrock; Class 3, High backscatter, and high rugosity, typically boulder and rugose bedrock; Class 4, Relating to development by human beings
USGS
Names are in text form, maximum length: 250
U.S. Geological Survey
mailing and physical address
345 Middlefield Rd
Menlo Park
CA
94025-3561
USA
(650) 329-4309
The .zip file (SeafloorCharacter_HuenemeCanyon.zip) includes the .tfw, .tif, .tif.aux.xml, and .tif.ovr, files, as well as FGDC-compliant metadata for the Seafloor Character data layer in the Hueneme Canyon and Vicinity region of California.
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.
GeoTiff
ArcMap (version 10.0, Esri, 2011)
Raster data layer is registered TIFF image in the UTM Zone 10 coordinate system.
The .zip file for the TIFF image includes the image (.tif), the world registration file (.tfw), and FGDC-compliant metadata.
WinZip
1.5
https://pubs.usgs.gov/ds/781/HuenemeCanyon/data/SeafloorCharacter_HuenemeCanyon.zip
https://pubs.usgs.gov/ds/781/HuenemeCanyon/data_catalog_HuenemeCanyon.html
https://pubs.usgs.gov/ds/781/
Data can be downloaded using the Network Resource links. The first link will begin a direct download of the data. The second link is a landing page on which all of the downloadable data for a particular region are listed. The third link is a landing page for the entire data catalog.
none
The downloadable data file has been compressed with the "zip" command and can be unzipped with Winzip (or other tool) on Windows systems. To utilize these data, the user must have software capable of uncompressing the WinZip file and importing and viewing an Esri ArcMap TIFF. Users should download the ArcGIS Project File, HuenemeCanyonGIS.mxd.zip, a compressed (with the "zip" command) version of the ArcMap document (.mxd) that has all the data layers loaded in the table of contents for "Hueneme Canyon and Vicinity" and has all the data symbolized as on the map sheets. Download and save this ArcGIS project file, including all data layers, to the directory the user has created for this GIS.
20180926
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060-5792
US
831-427-4747
pcmsc_data@usgs.gov
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time