Stellwagen Bank National Marine Sanctuary - Synthetic Aperture Radar (SAR) Imagery
National Centers for Coastal Ocean Science
Data Set
(DS)
| ID: 39477
| Published / External
Created: 2017-04-05
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Last Modified: 2023-05-30
Project (PRJ) | ID: 37201
ID: 39477
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | Stellwagen Bank National Marine Sanctuary - Synthetic Aperture Radar (SAR) Imagery |
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Short Name | sar_imagery |
* Status | Completed |
Creation Date | |
Revision Date | |
• Publication Date | 2006 |
* » Abstract |
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. |
* Purpose |
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 |
Notes |
639 |
Other Citation Details | |
• Supplemental Information |
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 |
DOI (Digital Object Identifier) | |
DOI Registration Authority | |
DOI Issue Date |
Keywords
Theme Keywords
Thesaurus | Keyword |
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ISO 19115 Topic Category | imageryBaseMapsEarthCover |
ISO 19115 Topic Category | oceans |
NOS Data Explorer Topic Category | Environmental Monitoring |
None | Internal Waves |
None | SAR |
None | Synthetic Aperture Radar |
Temporal Keywords
Thesaurus | Keyword |
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None | 1998-2003 |
* Spatial Keywords
Thesaurus | Keyword |
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None | Gulf of Maine |
None | Stellwagen Bank National Marine Sanctuary |
Stratum Keywords
Thesaurus | Keyword |
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Instrument Keywords
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Platform Keywords
Thesaurus | Keyword |
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Physical Location
• » Organization | National Centers for Coastal Ocean Science |
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• » City | Silver Spring |
• » State/Province | MD |
• Country | |
• » Location Description |
Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | |
• Maintenance Frequency | Unknown |
Maintenance Note | |
» Data Presentation Form | raster digital data |
• Entity Attribute Overview | |
Entity Attribute Detail Citation | |
Entity Attribute Detail URL | |
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. |
Data Set Credit | NOAA Satellite and Information Service, National Environmental Satellite, Data, and Information Service (NESDIS) http://www.orbit.nesdis.noaa.gov/sod/mecb/sar/ |
Support Roles
* » Support Role | Data Steward |
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* » Date Effective From | 2006 |
Date Effective To | |
Position | NCCOS Scientific Data Coordinator |
Email Address | NCCOS.data@noaa.gov |
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Business Hours | |
Contact Instructions |
* » Support Role | Distributor |
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* » Date Effective From | 2006 |
Date Effective To | |
Position | NCCOS Scientific Data Coordinator |
Email Address | NCCOS.data@noaa.gov |
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Contact Instructions |
* » Support Role | Metadata Contact |
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* » Date Effective From | 2006 |
Date Effective To | |
Position | NCCOS Scientific Data Coordinator |
Email Address | NCCOS.data@noaa.gov |
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Contact Instructions |
* » Support Role | Point of Contact |
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* » Date Effective From | 2006 |
Date Effective To | |
Position | NCCOS Scientific Data Coordinator |
Email Address | NCCOS.data@noaa.gov |
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Contact Instructions |
* » Support Role | Principal Investigator |
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* » Date Effective From | 2006 |
Date Effective To | |
Person | Costa, Bryan |
Email Address | bryan.costa@noaa.gov |
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Extents
Currentness Reference | Ground Condition |
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Extent Group 1
Extent Description |
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Extent Group 1 / Geographic Area 1
* » W° Bound | -71.529044 |
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* » E° Bound | -69.109407 |
* » N° Bound | 42.987986 |
* » S° Bound | 41.235121 |
* » Description |
Extent Group 1 / Vertical Extent
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Vertical Maximum |
Extent Group 1 / Time Frame 1
* » Time Frame Type | Range |
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* » Start | 1998-05-14 |
End | 2003-09-29 |
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Description |
Spatial Information
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Spatial Representation
Grid Representation Used? | Yes |
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Vector Representation Used? | |
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TIN Representation Used? | |
Stereo Model Representation Used? | |
Video Representation Used? |
Grid Representation
Dimension Count | 2 | ||||||||||||
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Cell Geometry | Point | ||||||||||||
Transformation Parameters Available? | No | ||||||||||||
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Reference Systems
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Access Information
Data License | |
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Data License Statement | |
* » Security Class | Unclassified |
* Security Classification System | |
Security Handling Description | |
• Data Access Policy | |
» Data Access Procedure |
Please contact the Stellwagen Banks NMS Research Coordinator for additional information on data access (david.wiley@noaa.gov); |
• » Data Access Constraints |
Contact NOAA Satellite and Information Service, National Environmental Satellite, Data, and Information Service (NESDIS) for imagery acquisition. |
• Data Use Constraints |
Contact NOAA Satellite and Information Service, National Environmental Satellite, Data, and Information Service (NESDIS) for use constraints. |
Metadata Access Constraints | |
Metadata Use Constraints |
Distribution Information
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URLs
URL | http://coastalscience.noaa.gov/projects/detail?key=141 |
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URL Type | Online Resource |
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Activity Log
Activity Time | 2015-06-18 |
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Description |
Date that the source FGDC record was last modified. |
Activity Time | 2017-04-05 |
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Responsible Party | |
Description |
Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details. |
Activity Time | 2017-09-13 |
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Partial upload of Spatial Info section only. |
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Data Management
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» Do these Data Comply with the Data Access Directive? | |
» Is Access to the Data Limited Based on an Approved Waiver? | |
» If Distributor (Data Hosting Service) is Needed, Please Indicate | |
» Approximate Delay Between Data Collection and Dissemination | |
» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed |
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» Actual or Planned Long-Term Data Archive Location | |
» If World Data Center or Other, Specify | |
» If To Be Determined, Unable to Archive, or No Archiving Intended, Explain |
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» Approximate Delay Between Data Collection and Archiving | |
» How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive? |
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Acquisition Information
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FAQs
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Related Items
Item Type | Relationship Type | Title |
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Catalog Details
Catalog Item ID | 39477 |
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Metadata Record Created By | Tyler Christensen |
Metadata Record Created | 2017-04-05 12:52+0000 |
Metadata Record Last Modified By | SysAdmin InPortAdmin |
» Metadata Record Last Modified | 2023-05-30 18:09+0000 |
Metadata Record Published | 2017-09-13 |
Owner Org | NCCOS |
Metadata Publication Status | Published Externally |
Do Not Publish? | N |
Metadata Workflow State | Published / External |
Metadata Last Review Date | 2017-09-13 |
Metadata Review Frequency | 1 Year |
Metadata Next Review Date | 2018-09-13 |
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