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Short Citation:
National Centers for Coastal Ocean Science, 2022: Stellwagen Bank National Marine Sanctuary - Synthetic Aperture Radar (SAR) Imagery, https://www.fisheries.noaa.gov/inport/item/39477.

Item Identification

Title: Stellwagen Bank National Marine Sanctuary - Synthetic Aperture Radar (SAR) Imagery
Short Name: sar_imagery
Status: Completed
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

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

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
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
UNCONTROLLED
None 1998-2003

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
None Gulf of Maine
None Stellwagen Bank National Marine Sanctuary

Physical Location

Organization: National Centers for Coastal Ocean Science
City: Silver Spring
State/Province: MD

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: Unknown
Data Presentation Form: raster digital data
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

Data Steward

CC ID: 471817
Date Effective From: 2006
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Distributor

CC ID: 471819
Date Effective From: 2006
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Metadata Contact

CC ID: 471820
Date Effective From: 2006
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Point of Contact

CC ID: 471818
Date Effective From: 2006
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Principal Investigator

CC ID: 471821
Date Effective From: 2006
Date Effective To:
Contact (Person): Costa, Bryan
Email Address: bryan.costa@noaa.gov

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 471824
W° Bound: -71.529044
E° Bound: -69.109407
N° Bound: 42.987986
S° Bound: 41.235121

Extent Group 1 / Time Frame 1

CC ID: 471823
Time Frame Type: Range
Start: 1998-05-14
End: 2003-09-29

Spatial Information

Spatial Representation

Representations Used

Grid: Yes

Grid Representation 1

CC ID: 585781
Dimension Count: 2
Cell Geometry: Point
Transformation Parameters Available?: No

Axis Dimension 1

Dimension Type: Row
Size: 13000

Axis Dimension 2

Dimension Type: Column
Size: 13000

Access Information

Security Class: Unclassified
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.

URLs

URL 1

CC ID: 471815
URL: http://coastalscience.noaa.gov/projects/detail?key=141
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 471835
Activity Date/Time: 2015-06-18
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 471834
Activity Date/Time: 2017-04-05
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 Log 3

CC ID: 585779
Activity Date/Time: 2017-09-13
Description:

Partial upload of Spatial Info section only.

Technical Environment

Description:

Unknown

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity SAR_Imagery

Catalog Details

Catalog Item ID: 39477
GUID: gov.noaa.nmfs.inport:39477
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: 2022-08-09 17:11+0000
Metadata Record Published: 2017-09-13
Owner Org: NCCOS
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2017-09-13
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2018-09-13