gov.noaa.nmfs.inport:39477 eng UTF8 dataset National Centers for Coastal Ocean Science resourceProvider NCCOS Scientific Data Coordinator NCCOS.data@noaa.gov pointOfContact 2025-05-15T19:16:12 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) 2 row 13000 column 13000 point 0 Stellwagen Bank National Marine Sanctuary - Synthetic Aperture Radar (SAR) Imagery sar_imagery 2006 publication NOAA/NMFS/EDM 39477 https://www.fisheries.noaa.gov/inport/item/39477 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 geodatabase contains Synthetic Aperture Radar images (SAR), which consist of a fine resolution (12.5-50m), two-dimensional radar backscatter map of the roughness of the ocean surface. The interaction between the SAR pulse of microwave energy---X-band (3cm), C-band (6cm) and L-band (24 cm) ---and the ocean surface is complex, as it is dependent on wavelength, polarization, geometry, environmental conditions and the electrical properties of the oceans surface. Ocean features commonly seen on SAR imagery include surface waves, mesocscale ocean circulation structures such as eddies and currents, oily slicks and surface manifestations of ocean dynamics present below the surface, including internal waves and currents passing over shallow shoals. NAMING CONVENTION: The naming convention of the imagery is as follows: SAR_Year_JulianDay_Month_Day_Time(in GMT)_Scene#So for example, SAR_1997_134_5_14_T223315 would read as SAR imagery taken on May 14 (JulianDay 134), 1997 at 22:33:15 GMT time. These SAR images were obtained from NOAA/NESDIS to support the biogeographic assessment of Stellwagen Bank National Marine Sanctuary. More specifically, the images were used to map the temporal and spatial variability of internal waves in Stellwagen Bank National Marine Sanctuary. Internal waves occur in regions where relatively strong currents flow over bottom topography that protrudes up into the pycnocline. Internal waves appear as packets or groups of waves characterized by: 1) Alternating bands of bright and dark bands; 2) Curvilinear wave crests (bent by refraction); 3) Decreasing wavelengths from front to back of each packet (indicating that nonlinear wave dispersion is in effect and also indicating propagation direction); 4) Decreasing wave amplitudes from front to back of each packet; 5) Wave packets propagate parallel to significant isobaths NOAA Satellite and Information Service, National Environmental Satellite, Data, and Information Service (NESDIS) http://www.orbit.nesdis.noaa.gov/sod/mecb/sar/ completed NCCOS Scientific Data Coordinator NCCOS.data@noaa.gov pointOfContact NCCOS Scientific Data Coordinator NCCOS.data@noaa.gov custodian unknown Environmental Monitoring theme NOS Data Explorer Topic Category Internal Waves SAR Synthetic Aperture Radar theme 1998-2003 temporal Gulf of Maine 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]: Stellwagen Bank National Marine Sanctuary - Synthetic Aperture Radar (SAR) Imagery [Data Date Range], https://www.fisheries.noaa.gov/inport/item/39477. 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: Contact NOAA Satellite and Information Service, National Environmental Satellite, Data, and Information Service (NESDIS) for imagery acquisition. otherRestrictions Use Constraints: Contact NOAA Satellite and Information Service, National Environmental Satellite, Data, and Information Service (NESDIS) for use constraints. 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 39477 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/nccos/dmp/pdf/39477.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference grid eng; US imageryBaseMapsEarthCover oceans Unknown -71.529044 -69.109407 41.235121 42.987986 | 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 SAR_Imagery 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