gov.noaa.nmfs.inport:39345 eng UTF8 dataset National Centers for Coastal Ocean Science resourceProvider NCCOS Scientific Data Coordinator NCCOS.data@noaa.gov pointOfContact 2025-05-15T19:16:09 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) complex 167098 Massachusetts Bay - Internal wave packets digitized from SAR imagery and intersected with a bathymetrically derived slope surface iw_intersect_slope 2006 publication NOAA/NMFS/EDM 39345 https://www.fisheries.noaa.gov/inport/item/39345 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information Costa, Bryan bryan.costa@noaa.gov principalInvestigator https://coastalscience.noaa.gov/projects/detail?key=141 WWW:LINK-1.0-http--link Citation URL Online Resource download This feature class contains internal wave packets digitized from SAR imagery and intersected with a bathymetrically derived slope surface for Massachusetts Bay. The internal wave packets were digitized at a 1:350,000 scale and the degree slope surface had a 360 x 360 meter resolution. Created to support the biogeographic assessment of Stellwagen Bank National Marine Sanctuary. National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program: http://ccma.nos.noaa.gov/about/biogeography/ completed NCCOS Scientific Data Coordinator NCCOS.data@noaa.gov pointOfContact NCCOS Scientific Data Coordinator NCCOS.data@noaa.gov custodian notPlanned Environmental Monitoring theme NOS Data Explorer Topic Category Bathymetry Internal Waves SAR Slope Synthetic Aperture Radar theme 1998-2003 temporal Massachusetts Bay Stellwagen Bank National Marine Sanctuary place DOC/NOAA/NOS/NCCOS > National Centers for Coastal Ocean Science, National Ocean Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian SBNMS_Assess_Internal_Waves project InPort otherRestrictions Cite As: National Centers for Coastal Ocean Science, [Date of Access]: Massachusetts Bay - Internal wave packets digitized from SAR imagery and intersected with a bathymetrically derived slope surface [Data Date Range], https://www.fisheries.noaa.gov/inport/item/39345. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: None. otherRestrictions Use Constraints: None. Acknowledgement of the National Oceanic and AtmosphericAdministration, Center for Coastal Monitoring and Assessment, Biogeography Program would be appreciated in products derived from these data. otherRestrictions Distribution Liability: These data were prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data have been used by NOAA, no warranty, expressed or implied, is made by NOAA as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by NOAA in the use of these data or related materials. NOAA makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA can not assume liability for and damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system. unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 39345 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/nccos/dmp/pdf/39345.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference vector eng; US imageryBaseMapsEarthCover oceans Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 -70.783468 -69.587834 41.530988 42.762758 | Currentness: Ground Condition 1998-05-14 2003-09-29 Jackson, C.R. and J.R. Apel. 2004. Synthetic Aperture Radar Marine User's Manual. NOAA NESDIS: Washington, D.C. pp. 464. Available from: http://www.orbit.nesdis.noaa.gov/sod/mecb/sar/sarmanual.html false eng false InternalWave_Intersected_Slope 2017-04-17 publication NCCOS Scientific Data Coordinator NCCOS.data@noaa.gov distributor https://coastalscience.noaa.gov/projects/detail?key=141 WWW:LINK-1.0-http--link https://coastalscience.noaa.gov/projects/detail?key=141 Online Resource download dataset Completeness Report Unknown Conceptual Consistency Unknown METHODS: The following methods were used to calculate the mean slope (weighted by area) at which each internal wave occured in the SAR imagery. The first step was to derive a slope surface (in degrees) from the bathymetry. We used the ArcGIS 9.1 Spatial Analyst extension slope function to create this surface. Before this slope surface could be converted to a vector polygon (because the Spatial Analyst Zonal Stats function does not accomodate overlapping polygons), it was multiplied by 100 million using the raster calculator and then converted to an integer raster. This factor of 100 million preserved the decimals in the floating point raster when it was converted to a integer raster. The slope integer raster was subsequently converted to a vector polygon, intersected with the internal wave packet polygon shapefile and the slope values were divided by 100 million to remove the scaling factor used previously.The next step was to calculate the mean slope (weighted by area) for each internal wave packet. To do so, we used the following equation:Area Weighted Mean (for slope) by internal wave packet =[((slope 1 x area 1) + (slope 2 x area 2) + (slope n-1 x area n-1)) /(area 1 + area 2 + area n-1)] Total area of the internal wave packet = area 1 + area 2 + area n-1 After the mean slope (weighted by area) was calculated for each internal wave packet, the mean slope (weighted by area) was calculated for ALL internal waves. The same formula was used as above: Area Weighted Mean (for slope)=[((mean slope 1 x internal wave packet area 1) + (mean slope 2 x internal wave packet area 2) + (mean slope n-1 x internal wave area n-1)) / (internal wave packet area 1 + internal wave packet area 2 + internal wave packet area n-1)] 2006-01-01T00:00:00