Peter Dartnell Kurt J. Rosenberger Curt D. Storlazzi 2018 TIFF data release DOI:10.5066/F71C1W36 Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey https://doi.org/10.5066/F71C1W36 https://www.sciencebase.gov/catalog/item/5a53bc65e4b01e7be22fc6fb Peter Dartnell Kurt J. Rosenberger Curt D. Storlazzi 2018 data release DOI:10.5066/F71C1W36 Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey https://doi.org/10.5066/F71C1W36 Between November 2014 and June 2016 the U.S. Geological Survey, Pacific Coastal and Marine Science Center (PCMSC) conducted eight repeat, high-resolution bathymetry and acoustic-backscatter surveys of a small patch of seafloor offshore Santa Cruz in northern Monterey Bay, California. PCMSC also collected oceanographic time-series data over the same two-year period. This metadata file describes the eight acoustic-backscatter datasets. The repeat bathymetry and acoustic-backscatter datasets and time-series data were originally collected to study the structure and evolution of a field of rippled scour depressions (RSDs) found in northern Monterey Bay, California. These data are intended for science researchers, students, policy makers, and the general public. 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=2014-673-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2014-681-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2015-604-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2015-613-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2015-627-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2015-673-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-621-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-647-FA 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. 2014 2016 ground condition at time data were collected. Complete As needed -122.031 -121.997 36.954 36.927 USGS Metadata Identifier USGS:5a53bc65e4b01e7be22fc6fb ISO 19115 Topic Category geoscientificInformation imageryBaseMapsEarthCover USGS Thesaurus sea-floor characteristics sea-floor acoustic reflectivity geospatial datasets image mosaics marine geophysics interferometric sonar Data Categories for Marine Planning Physical Habitats and Geomorphology Marine Realms Information Bank (MRIB) keywords seabed ripple mark acoustic methods mapping geophysics None U.S. Geological Survey USGS Coastal and Marine Geology Program CMGP Pacific Coastal and Marine Science Center PCMSC Geographic Names Information System (GNIS) State of California Monterey Bay Santa Cruz 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 originators 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 831-427-4747 pcmsc_data@usgs.gov https://www.sciencebase.gov/catalog/file/get/5a53bc65e4b01e7be22fc6fbhttps://www.sciencebase.gov/catalog/item/editForm/5a53bc65e4b01e7be22fc6fb?name=SantaCruz_RSD_backscatter_QV.jpg&allowOpen=true quick view image of June 2016 acoustic-backscatter data JPEG SonarWiz (ver. 6) and ArcMap (ver. 10.3.1) on a Windows 7 computer Kurt J. Rosenberger Curt D. Storlazzi Peter Dartnell 2018 Rosenberger, K.J., Storlazzi, C.D., and Dartnell, Peter, 2018, Morphodynamics of a field of crescent-shaped rippled scour depressions, northern Monterey Bay, CA: Marine Geology, doi: 10.1016/j.margeo.2018.10.006 https://doi.org/10.1016/j.margeo.2018.10.006 The accuracy of the SWATHPlus acoustic-backscatter data is unknown since it is believed the backscatter is uncalibrated. Also, during post-processing, the backscatter data from all repeat mapping surveys were gain normalized together so the backscatter data in this report differ from the original individual surveys' data. No formal logical accuracy tests were conducted. Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. The Applanix POS-MV post-processed horizontal positional accuracy is about 0.1 m with roll and pitch accuracies of about 0.02 degrees (https://www.applanix.com/downloads/products/specs/posmv/POS-MV-WaveMaster-II.pdf). The SWATHPlus sonar system (234 kHz) has an across track resolution of 5 cm (http://www.bathyswath.com/sites/default/files/documents/ETD_2002_Bathyswath%20information_EN.pdf). Accuracies of final products may be lower due 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. Not applicable to acoustic-backscatter data Swath bathymetric and acoustic backscatter surveys were conducted with a SWATHplus-M 234-kHz interferometric side-scan sonar system pole-mounted on the U.S. Geological Survey (USGS) R/V Parke Snavely. During the mapping missions, an Applanix POS-MV (Position and Orientation System for Marine Vessels) was used to position the vessel during data collection and it also accounted for vessel motion such as heave, pitch, and roll. The POS-MV also recorded position and vessel motion parameters for later post-processing. Sound-velocity profiles were collected throughout the survey days with a Castaway sound velocimeter. The acoustic-backscatter data were processed using SonarWiz software. The software normalizes for time-varying signal loss and beam directivity differences (D. Finlayson, personnel comm.). The acoustic-backscatter data from all 8 surveys were imported into a single SonarWiz project for processing; this allowed all the backscatter data to be normalized over the 8 surveys. After processing, each individual survey data were gridded into their own grid. The resulting images were then exported as Imagine images and imported into a GIS and converted to grids. The grids were then projected from WGS84 to NAD83 using the WGS84_1984_(ITRF08)_to_NAD_1983_2011 tool in Esri ArcTools. 2017 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 20211013 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 2921 3251 1 Universal Transverse Mercator 10 0.9996 -123.00000 0.00000 500000.0 0.00 coordinate pair 1.0 1.0 Meters NAD83 2017 6378137.00 298.257223563 value backscatter intensity Producer defined The complete 1-m resolution November 2014 acoustic-backscatter image (backscatter_november_2014_1m_utm10_nad83.tif) was originally archived as a TIFF image with the following attributes. >Cell size = 1.0 >Number of rows = 2921 >Number of columns = 3251 > >Data type = floating point > >Boundary >Xmin = 586241 >Xmax = 589492 >Ymin = 4087339 >Ymax = 4090260 > >Statistics >Minimum value = 0.0 >Maximum value = 159.06 >Mean = 105.11 >Standard deviation = 5.78 > >Coordinate system description >Projection UTM >Zone 10 >Datum NAD83 >Units mete The complete 1-m resolution December 2014 acoustic-backscatter image (backscatter_december_2014_1m_utm10_nad83.tif) was originally archived as a TIFF image with the following attributes. >Number of rows = 2921 >Number of columns = 3251 > >Data type = floating point > >Boundary >Xmin = 586241 >Xmax = 589492 >Ymin = 4087339 >Ymax = 4090260 > >Statistics >Minimum value = 0.0 >Maximum value = 158.20 >Mean = 103.65 >Standard deviation = 8.10 > >Coordinate system description >Projection UTM >Zone 10 >Datum NAD83 >Units meter The complete 1-m resolution January 2015 acoustic-backscatter image (backscatter_january_2015_1m_utm10_nad83.tif) was originally archived as a TIFF image with the following attributes. >Cell size = 1.0 >Number of rows = 2921 >Number of columns = 3251 > >Data type = floating point > >Boundary >Xmin = 586241 >Xmax = 589492 >Ymin = 4087339 >Ymax = 4090260 > >Statistics >Minimum value = 0.0 >Maximum value = 145.00 >Mean = 104.24 >Standard deviation = 6.89 > >Coordinate system description >Projection UTM >Zone 10 >Datum NAD83 >Units meter The complete 1-m resolution February 2015 acoustic-backscatter image (backscatter_february_2015_1m_utm10_nad83.tif) was originally archived as a TIFF image with the following attributes. >Cell size = 1.0 >Number of rows = 2921 >Number of columns = 3251 > >Data type = floating point > >Boundary >Xmin = 586241 >Xmax = 589492 >Ymin = 4087339 >Ymax = 4090260 > >Statistics >Minimum value = 0.0 >Maximum value = 156.00 >Mean = 104.40 >Standard deviation = 7.67 > >Coordinate system description >Projection UTM >Zone 10 >Datum NAD83 >Units meter The complete 1-m resolution March 2015 acoustic-backscatter image (backscatter_march_2015_1m_utm10_nad83.tif) was originally archived as a TIFF image with the following attributes. >Cell size = 1.0 >Number of rows = 2921 >Number of columns = 3251 > >Data type = floating point > >Boundary >Xmin = 586241 >Xmax = 589492 >Ymin = 4087339 >Ymax = 4090260 > >Statistics >Minimum value = 0.0 >Maximum value = 157.37 >Mean = 108.44 >Standard deviation = 6.04 > >Coordinate system description >Projection UTM >Zone 10 >Datum NAD83 >Units meter The complete 1-m resolution November 2015 acoustic-backscatter image (backscatter_november_2015_1m_utm10_nad83.tif) was originally archived as a TIFF image with the following attributes. >Cell size = 1.0 >Number of rows = 2921 >Number of columns = 3251 > >Data type = floating point > >Boundary >Xmin = 586241 >Xmax = 589492 >Ymin = 4087339 >Ymax = 4090260 > >Statistics >Minimum value = 0.0 >Maximum value = 132.00 >Mean = 86.79 >Standard deviation = 6.35 > >Coordinate system description >Projection UTM >Zone 10 >Datum NAD83 >Units meter The complete 1-m resolution March 2016 acoustic-backscatter image (backscatter_march_2016_1m_utm10_nad83.tif) was originally archived as a TIFF image with the following attributes. >Cell size = 1.0 >Number of rows = 2921 >Number of columns = 3251 > >Data type = floating point > >Boundary >Xmin = 586241 >Xmax = 589492 >Ymin = 4087339 >Ymax = 4090260 > >Statistics >Minimum value = 0.0 >Maximum value = 150.00 >Mean = 89.66 >Standard deviation = 8.47 > >Coordinate system description >Projection UTM >Zone 10 >Datum NAD83 >Units meter The complete 1-m resolution June 2016 acoustic-backscatter image (backscatter_june_2016_1m_utm10_nad83.tif) was originally archived as a TIFF image with the following attributes. >Cell size = 1.0 >Number of rows = 2921 >Number of columns = 3251 > >Data type = floating point > >Boundary >Xmin = 586241 >Xmax = 589492 >Ymin = 4087339 >Ymax = 4090260 > >Statistics >Minimum value = 0.0 >Maximum value = 146.0 >Mean = 92.62 >Standard deviation = 6.30 > >Coordinate system description >Projection UTM >Zone 10 >Datum NAD83 >Units meter U.S. Geological Survey 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 These data are available in TIFF format (example: backscatter_december_2014_1m_utm10_nad83.tif) contained in a single zip file (example: backscatter_december_2014_1m_utm10_nad83.zip), which includes a tif world file (.tfw) and CSDGM FGDC-compliant metadata. Neither the U.S. Government, the Department of the Interior, nor the U.S. Geological Survey, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data or related materials. 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 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 10.3.1) The .zip file (backscatter_november_2014_1m_utm10_nad83.zip) contains the TIFF (.tif), the projection file (.tfw), and the XML (.xml) version of the metadata. WinZip 13 https://www.sciencebase.gov/catalog/file/get/5a53bc65e4b01e7be22fc6fb?name=backscatter_november_2014_1m_utm10_nad83.zip https://www.sciencebase.gov/catalog/item/5a53bc65e4b01e7be22fc6fb https://doi.org/10.5066/F71C1W36 Data can be accessed using the Network_Resource_Name links. The first link is a direct link to download this particular zipped file of data and metadata. The second link points to a page that includes all eight backscatter data zips, metadata, and a quick view image. The third link points to a landing page for the entire data release. TIFF ArcMap (version 10.3.1) The .zip file (backscatter_december_2014_1m_utm10_nad83.zip) contains the TIFF (.tif), the projection file (.tfw), and the XML (.xml) version of the metadata. WinZip 13 https://www.sciencebase.gov/catalog/file/get/5a53bc65e4b01e7be22fc6fb?name=backscatter_december_2014_1m_utm10_nad83.zip https://www.sciencebase.gov/catalog/item/5a53bc65e4b01e7be22fc6fb https://doi.org/10.5066/F71C1W36 Data can be accessed using the Network_Resource_Name links. The first link is a direct link to download this particular zipped file of data and metadata. The second link points to a page that includes all eight backscatter data zips, metadata, and a quick view image. The third link points to a landing page for the entire data release. TIFF ArcMap (version 10.3.1) The .zip file (backscatter_january_2015_1m_utm10_nad83.zip) contains the TIFF (.tif), the projection file (.tfw), and the XML (.xml) version of the metadata. WinZip 13 https://www.sciencebase.gov/catalog/file/get/5a53bc65e4b01e7be22fc6fb?name=backscatter_january_2015_1m_utm10_nad83.zip https://www.sciencebase.gov/catalog/item/5a53bc65e4b01e7be22fc6fb https://doi.org/10.5066/F71C1W36 Data can be accessed using the Network_Resource_Name links. The first link is a direct link to download this particular zipped file of data and metadata. The second link points to a page that includes all eight backscatter data zips, metadata, and a quick view image. The third link points to a landing page for the entire data release. TIFF ArcMap (version 10.3.1) The .zip file (backscatter_february_2015_1m_utm10_nad83.zip) contains the TIFF (.tif), the projection file (.tfw), and the XML (.xml) version of the metadata. WinZip 13 https://www.sciencebase.gov/catalog/file/get/5a53bc65e4b01e7be22fc6fb?name=backscatter_february_2015_1m_utm10_nad83.zip https://www.sciencebase.gov/catalog/item/5a53bc65e4b01e7be22fc6fb https://doi.org/10.5066/F71C1W36 Data can be accessed using the Network_Resource_Name links. The first link is a direct link to download this particular zipped file of data and metadata. The second link points to a page that includes all eight backscatter data zips, metadata, and a quick view image. The third link points to a landing page for the entire data release. TIFF ArcMap (version 10.3.1) The .zip file (backscatter_march_2015_1m_utm10_nad83.zip) contains the TIFF (.tif), the projection file (.tfw), and the XML (.xml) version of the metadata. WinZip 13 https://www.sciencebase.gov/catalog/file/get/5a53bc65e4b01e7be22fc6fb?name=backscatter_march_2015_1m_utm10_nad83.zip https://www.sciencebase.gov/catalog/item/5a53bc65e4b01e7be22fc6fb https://doi.org/10.5066/F71C1W36 Data can be accessed using the Network_Resource_Name links. The first link is a direct link to download this particular zipped file of data and metadata. The second link points to a page that includes all eight backscatter data zips, metadata, and a quick view image. The third link points to a landing page for the entire data release. TIFF ArcMap (version 10.3.1) The .zip file (backscatter_november_2015_1m_utm10_nad83.zip) contains the TIFF (.tif), the projection file (.tfw), and the XML (.xml) version of the metadata. WinZip 13 https://www.sciencebase.gov/catalog/file/get/5a53bc65e4b01e7be22fc6fb?name=backscatter_november_2015_1m_utm10_nad83.zip https://www.sciencebase.gov/catalog/item/5a53bc65e4b01e7be22fc6fb https://doi.org/10.5066/F71C1W36 Data can be accessed using the Network_Resource_Name links. The first link is a direct link to download this particular zipped file of data and metadata. The second link points to a page that includes all eight backscatter data zips, metadata, and a quick view image. The third link points to a landing page for the entire data release. TIFF ArcMap (version 10.3.1) The .zip file (backscatter_march_2016_1m_utm10_nad83.zip) contains the TIFF (.tif), the projection file (.tfw), and the XML (.xml) version of the metadata. WinZip 13 https://www.sciencebase.gov/catalog/file/get/5a53bc65e4b01e7be22fc6fb?name=backscatter_march_2016_1m_utm10_nad83.zip https://www.sciencebase.gov/catalog/item/5a53bc65e4b01e7be22fc6fb https://doi.org/10.5066/F71C1W36 Data can be accessed using the Network_Resource_Name links. The first link is a direct link to download this particular zipped file of data and metadata. The second link points to a page that includes all eight backscatter data zips, metadata, and a quick view image. The third link points to a landing page for the entire data release. TIFF ArcMap (version 10.3.1) The .zip file (backscatter_june_2016_1m_utm10_nad83.zip) contains the TIFF (.tif), the projection file (.tfw), and the XML (.xml) version of the metadata. WinZip 13 https://www.sciencebase.gov/catalog/file/get/5a53bc65e4b01e7be22fc6fb?name=backscatter_june_2016_1m_utm10_nad83.zip https://www.sciencebase.gov/catalog/item/5a53bc65e4b01e7be22fc6fb https://doi.org/10.5066/F71C1W36 Data can be accessed using the Network_Resource_Name links. The first link is a direct link to download this particular zipped file of data and metadata. The second link points to a page that includes all eight backscatter data zips, metadata, and a quick view image. The third link points to a landing page for the entire data release. 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 a TIFF file. 20211013 U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

2885 Mission Street

Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998