Peter Dartnell Andrew C. Ritchie David P. Finlayson Rikk G. Kvitek 2015 1.0 GeoTiff Data Series DS 781 Reston, VA U.S. Geological Survey https://doi.org/10.3133/ds781 https://cmgds.marine.usgs.gov/data/csmp/MontereyCanyon/data_catalog_MontereyCanyon.html Nadine E. Golden 2016 database Data Series DS 781 Reston, VA U.S. Geological Survey https://doi.org/10.3133/ds781 This part of DS 781 presents data for 2-m and 5-m bathymetry and shaded-relief maps of Monterey Canyon and Vicinity, California. Bathymetry data are provided as separate grids depending on the mapping resolution. Data collected at shallower depths by the U.S. Geological Survey (USGS) and California State University, Monterey Bay (CSUMB) have a spatial resolution of 2 m per pixel, whereas data collected at deeper depths by the Monterey Bay Aquarium Research Institute (MBARI) have a spatial resolution of 5-m per pixel. This metadata file describes the shaded-relief 2-m data collected by the USGS and CSUMB, and processed by the USGS. The raster data file is included in "BathymetryAHS_2m_MontereyCanyon.zip," which is accessible from https://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, https://doi.org/10.3133/ofr20161072. The 2-m and 5-m bathymetry and shaded-relief maps of Monterey Canyon and Vicinity, California, were generated from data collected 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 mapping missions collected bathymetry data from about the 10-m isobath to beyond the 3-nautical-mile limit of California's State Waters. NOTE: The horizontal datum of this bathymetry data (NAD83) differs from the horizontal datum of other layers in this data release (WGS84). 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. Additional information about the field activity from which these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=S709MB https://cmgds.marine.usgs.gov/fan_info.php?fan=S2210MB 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. 1998 2014 ground condition Complete As needed -122.06 -121.74 36.84 36.68 USGS Metadata Identifier USGS:556f88d2e4b0d9246a9fd0af Global Change Master Directory (GCMD) Seafloor Topography Data Categories for Marine Planning distributions physical habitats and geomorphology Marine Realms Information Bank (MRIB) keywords seabed USGS Thesaurus multibeam sonar image mosaics interferometric sonar marine geophysics sea-floor characteristics maps and atlases geospatial datasets None U.S. Geological Survey USGS Coastal and Marine Geology Program CMGP Pacific Coastal and Marine Science Center PCMSC Coastal and Marine Ecological Classification Standard (CMECS) Marine Nearshore Subtidal Marine Offshore Subtidal Transform Continental Margin Continental/Island Shelf Rock Substrate Unconsolidated Mineral Substrate ISO 19115 Topic Category geoscientificInformation environment oceans imageryBaseMapsEarthCover Geographic Names Information System (GNIS) Pacific Ocean State of California Moss Landing Monterey County Coastal and Marine Ecological Classification Standard (CMECS) Northern California Ecoregion 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 and California State University, Monterey Bay, Seafloor Mapping Lab 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://www.sciencebase.gov/catalog/file/get/5570970be4b0d9246a9fd28a?name=BathymetryAHS_2m_MontereyCanyon.jpg&allowOpen=true Hillshaded bathymetry map of Monterey Canyon and Vicinity. JPEG Peter Dartnell Katherine L. Maier Mercedes D. Erdey Nadine E. Golden Bryan E. Dieter Nadine E. Golden Samuel Y. Johnson Stephen R. Hartwell Guy R. Cochrane Andrew C. Ritchie David P. Finlayson Rikk G. Kvitek Ray W. Sliter H. Gary Greene Clifton W. Davenport Charles A. Endris Lisa M. Krigsman 2012 pamphlet and map sheets Open-File Report 2016-1072 Reston, VA U.S. Geological Survey https://doi.org/10.3133/ofr20161072 Not applicable for raster data. Unspecified Complete Estimated to be no less than 2 m, owing to water depth and 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 water depth and 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. During the USGS mapping missions, GPS with real-time kinemtic (RTK) corrections and measurements of vessel motion (heave, pitch, and roll) were combined in a CodaOctopus F180 attitude and position system (2009) and an Applanix POSMV (Position and Orientation System for Marine Vessels) (2014) to produce a high-precision vessel attitude packet. This packet was transmitted to the acquisition software in real time and combined with instantaneous sound velocity measurements at the transducer head before each ping. The returned samples were projected to the seafloor using a ray-tracing algorithm that works with previously measured sound-velocity profiles. Statistical filters were applied to discriminate seafloor returns (soundings) from unintended targets in the water column. Finally, the soundings were converted into 2-m-resolution bathymetric-surface-model grids. 2014 Peter Dartnell U.S. Geological Survey, Pacific Coastal and Marine Science Center Physical Scientist mailing and physical address

2885 Mission St.

Santa Cruz CA 95060-5792 USA (831) 460-7415 pdartnell@usgs.gov During the CSUMB mapping missions, an Applanix POS MV (Position and Orientation System for Marine Vessels) was used to accurately position the vessels during data collection, and it also accounted for vessel motion such as heave, pitch, and roll (position accuracy, +/-2 m; pitch, roll, and heading accuracy, +/-0.02 percent; heave accuracy, +/-5 percent, or 5 cm). To account for tidal-cycle fluctuations, KGPS data (GPS data with real-time kinematic corrections) was used; in addition, sound-velocity profiles were collected with an Applied Microsystems (AM) SVPlus sound velocimeter. Soundings were corrected for vessel motion using the Applanix POS MV data, for variations in water-column sound velocity using the AM SVPlus data, and for variations in water height (tides) using vertical-position data from the KGPS receivers. Finally, the soundings were converted into 2-m-resolution bathymetric-surface-model grids. 2006 Carrie Bretz Seafloor Mapping Lab, California State University Monterey Bay Projects Manager, GIS & Metadata Supervisor mailing and physical address

100 Campus Center, Bldg 13

Seaside CA 93955 USA 831.582.4197 carrie_bretz@csumb.edu California State University, Monterey Bay, Seafloor Mapping Lab 2-m resolution bathymetry data within this map were downloaded from (http://seafloor.csumb.edu/SFMLwebDATA.htm). These data were merged with USGS 2-m resolution bathymetry data and clipped to the Monterey Canyon and Vicinity, California, map boundary. The MBARI 5-m bathymetric surface-model-grid was also clipped to the Monterey Canyon and Vicinity map boundary. To create the shaded-relief imagery, an illumination having an azimuth of 300 degrees and 45 degrees above the horizon was applied to the bathymetry grids. 2014 Peter Dartnell U.S. Geological Survey, Pacific Coastal and Marine Science Center Physical Scientist mailing and physical address

2885 Mission St.

Santa Cruz CA 95060-5792 USA (831) 460-7415 pdartnell@usgs.gov Metadata was modified to bring up to current USGS PCMSC standards. Information for accompanying Open-File Report added to Abstract and Cross Reference sections. Point of Contact information was updated. Keywords were added and refined. Details about different Network Resource Name links was given in the Access Instructions section. Minor typos were corrected. No data information was changed. 20181127 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 Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. 20201019 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Performed minor edits to the metadata to correct typos. No data were changed 20220405 U.S. Geological Survey Susan A. Cochran Geologist Mailing and Physical

2885 Mission Street

Santa Cruz CA 95060 831-460-7545 scochran@usgs.gov Raster Grid Cell 8836 14606 1 Universal Transverse Mercator 10 0.9996 -123.00000 0.00000 500000.0 0.00 coordinate pair 2.0 2.0 Meters NAD83 GRS80 6378137.00 298.257223563 Value BathymetryA [2m] hillshade intensity value ESRI VALUE Bathymetry hillshade intensity value ESRI 0 254 Integers from 0-254 representing hillshaded bathymetry The complete 2-m resolution bathymetry grid for Monterey Canyon and Vicinity, California were originally archived as an ESRI grid with the following attributes. NOTE: the horizontal datum of the bathymetry data (NAD83) differs from the horizontal datum of other layers in this data release (WGS84). >Cell size = 2.0 >Number of rows = 8835 >Number of columns = 14605 > >Data type = floating point > >Boundary >Xmin = 583530 >Xmax = 612740 >Ymin = 4060670 >Ymax = 4078340 > >Statistics >Minimum value = -149.78 >Maximum value = -0.24 >Mean = -63.23 >Standard deviation = 30.45 > >Coordinate system description >Projection UTM >Zone 10 >Datum NAD83 >Vertical Datum NAVD88 >Units meter none U.S. Geological Survey - ScienceBase mailing and physical

Denver Federal Center, Building 810, Mail Stop 302

Denver CO 80225 1-888-275-8747 sciencebase@usgs.gov The .zip file includes the .tfw, .tif, .tif.aux.xml, and .tif.ovr, files, as well as FGDC-compliant metadata for the hillshaded BathymetryA [2m] data layer in the Monterey 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. TIFF ArcMap (version 10.0, ESRI , 2011) Raster data layer is registered TIFF image in the UTM Zone 10 coordinate system with datum WGS84. The .zip file for the TIFF image includes the image (.tif), the world registration file (.tfw), and the text (.txt) and XML (.tif.xml) versions of the metadata for the hillshaded BathymetryA [2m] data layer of Monterey Canyon and Vicinity, California. WinZip 26.4 https://www.sciencebase.gov/catalog/file/get/556f88d2e4b0d9246a9fd0af https://cmgds.marine.usgs.gov/data/csmp/MontereyCanyon/data_catalog_MontereyCanyon.html https://doi.org/10.3133/ds781 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, MontereyCanyonGIS.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 "Monterey Canyon" and has all the data symbolized as on the data release map sheets. Download and save this ArcGIS project file, including all data layers, to the directory the user has created for this GIS. 20220405 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 universal time