Metadata: Identification_Information: Citation: Citation_Information: Originator: Joanne C.T. Ferreira Originator: Jessica R. Lacy Originator: Gerald Hatcher Publication_Date: 20201231 Title: Near-bed velocity measurements in Monterey Bay during arrival of the 2010 Chile Tsunami Geospatial_Data_Presentation_Form: NetCDF files Series_Information: Series_Name: data release Issue_Identification: doi:10.5066/P9T90PO1 Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center Santa Cruz, California Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9T90PO1 Online_Linkage: https://www.sciencebase.gov/catalog/item/5fad942bd34eb413d5df4758 Description: Abstract: On February 27, 2010, a tsunami originating near Chile arrived in Monterey Bay, California. This data release comprises two hours of pressure and near-bed velocity data spanning the largest tsunami waves. At the time, the U.S. Geological Survey Pacific Coastal and Marine Science Center had a remotely-controlled instrumented platform deployed adjacent to the Santa Cruz Municipal Wharf (mean depth 9 m) for collecting hydrodynamic and sediment transport data. In anticipation of the arrival of the tsunami, sampling was changed to better capture the event. Pressure and near-bed velocity profiles were measured at 1 Hz for 25 minutes every half hour. The velocities are influenced by surface waves, tsunami waves, and tidal currents. The velocity profiles capture the unsteady boundary layer that developed due to the tsunami-induced currents. They are useful for understanding the frictional interaction of the tsunami with the sea floor, as well as sediment transport produced by the tsunami. Purpose: These data were collected to measure conditions near the sea floor on the inner shelf during the arrival of a remote tsunami in Monterey Bay. Purposes for the data collection included determining sediment transport generated by the tsunami, and for producing a data set to test numerical models of tsunami flows and their interaction with the sea floor. These data are intended for science researchers, students, policy makers, and the general public. Supplemental_Information: 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=WD108MB Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. This Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20100227 Ending_Date: 20100227 Currentness_Reference: ground condition at time data were collected. Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -122.0171 East_Bounding_Coordinate: -122.0169 North_Bounding_Coordinate: 36.957 South_Bounding_Coordinate: 36.9568 Keywords: Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Water Column Features Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: time series datasets Theme_Keyword: tsunamis Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: field observation Theme_Keyword: water level measurements Theme_Keyword: physical oceanography Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Hazards and Resources Program Theme_Keyword: CMHRP Theme_Keyword: Pacific Coastal and Marine Science Center Theme_Keyword: PCMSC Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:5fad942bd34eb413d5df4758 Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: State of California Place_Keyword: Monterey Bay Place_Keyword: Santa Cruz Municipal Wharf Access_Constraints: none Use_Constraints: 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. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: US Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/ 5fad942bd34eb413d5df4758?name=Seafloor_Observatory_Tripod.jpg&allowOpen=true Browse_Graphic_File_Description: Photograph of the Seafloor Observatory Tripod being deployed off the end of the Santa Cruz Municipal Wharf Browse_Graphic_File_Type: JPEG Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/ 5fad942bd34eb413d5df4758?name=PT058_Tsunami_velocity_plot.png&allowOpen=true Browse_Graphic_File_Description: image of plotted water depth and velocity Browse_Graphic_File_Type: PNG Cross_Reference: Citation_Information: Originator: Jessica R. Lacy Originator: David M. Rubin Originator: Daniel Buscombe Publication_Date: 2012 Title: Currents, drag, and sediment transport induced by a tsunami Other_Citation_Details: Lacy, J.R., Rubin, D.M., and Buscombe, D., 2012, Currents, drag, and sediment transport induced by a tsunami: Journal of Geophysical Research, v. 117, C09028, doi:10.1029/2012JC007954 Online_Linkage: https://doi.org/10.1029/2012JC007954 Cross_Reference: Citation_Information: Originator: Jessica R. Lacy Originator: Christopher R. Sherwood Publication_Date: 2004 Title: Currents, drag, and sediment transport induced by a tsunami Other_Citation_Details: Lacy, J.R., and Sherwood, C.R., 2004, Accuracy of a pulse-coherent acoustic doppler profiler in a wave-dominated flow: Journal of Atmospheric and Oceanic Technology, v. 21(9), p. 1448-1461 Online_Linkage: https://doi.org/10.1175/1520-0426(2004)021<1448:AOAPAD>2.0.CO;2 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted. Logical_Consistency_Report: No formal logical accuracy tests were conducted. Data fall within expected ranges. Completeness_Report: 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. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Horizontal accuracy derived from GPS instrumentation is less than 1 m. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Mean water depth at the tripod site was taken from a bathymetric map, and accuracy is estimated at 50 cm. Lineage: Process_Step: Process_Description: Programming of Sontek pulse coherent acoustic doppler profiler (PCADP) deployed in Monterey Bay changed to capture tsunami data. Process_Date: 20100227 Process_Step: Process_Description: PCADP data processed using manufacturers software. Process_Date: 20100315 Process_Step: Process_Description: Data from pulse-coherent velocimeters must be corrected for ambiguity errors, which occur when velocities exceed the resolved range (Lacy and Sherwood, 2004). To assist with this correction, the Sontek PCADP measures velocities (called resolution velocities) at a single point at relatively short range, where greater velocities can be resolved, before collecting each profile. For these four bursts, we first corrected ambiguity errors in the resolution velocities, attributable to the high instantaneous speeds produced by the combination of surface waves and the tsunami. Then ambiguity errors in the velocity profiles were resolved as described in Lacy and Sherwood (2004), using the corrected rather than raw resolution velocities. Process_Date: 20101026 Process_Step: Process_Description: Data were accumulated into a NetCDF file and bad sensor data removed. Process_Date: 20201123 Process_Step: Process_Description: Performed minor edits to the metadata to correct typos. No data were changed Process_Date: 20211013 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Susan A. Cochran Contact_Position: Geologist Contact_Address: Address_Type: Mailing and Physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-460-7545 Contact_Electronic_Mail_Address: scochran@usgs.gov Spatial_Data_Organization_Information: Indirect_Spatial_Reference: Data were collected continuously at survey locations. Refer to self-contained NetCDF files for more location information. Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 1.0E-5 Longitude_Resolution: 1.0E-5 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: World Geodetic System 1984 (WGS84) Ellipsoid_Name: WGS84 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257223563 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: NetCDF files are self-contained and attribute information may be found in the header of the file itself. Entity_and_Attribute_Detail_Citation: The entity and attribute information was generated by the individual and/or agency identified as the originator of the data set. Please review the rest of the metadata record for additional details and information. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - ScienceBase Contact_Address: Address_Type: mailing and physical Address: Denver Federal Center, Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: These data are available in zipped NetCDF format and CSDGM FGDC-compliant metadata. Distribution_Liability: 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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: NetCDF Format_Version_Number: Matlab (v 2016) Format_Specification: Data are in NetCDF format. Format_Information_Content: Downloadable zip file contains NetCDF (.nc) file and metadata. File_Decompression_Technique: WinZip or archive utility Transfer_Size: 1.5 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/5fad942bd34eb413d5df4758?name=PT058_Tsunami_bursts.zip Network_Resource_Name: https://doi.org/10.5066/P9T90PO1 Access_Instructions: Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the zipped file of time-series data from day 058 during the arrival of the tsunami event. The second link points to a landing page with time-series data and metadata, as well as the browse images. Fees: none Metadata_Reference_Information: Metadata_Date: 20211013 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: PCMSC Science Data Coordinator Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Country: United States Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998