Massachusetts Bay - Internal Wave Packets Extracted from SAR Imagery Binned in 1x1 minute grid cells

National Centers for Coastal Ocean Science
Data Set (DS) | ID: 39342 | Published / External
Created: 2017-04-05   |   Last Modified: 2023-05-30

Parent: SBNMS_Assess_Internal_Waves
Project (PRJ) | ID: 37201

ID: 39342
Data Set (DS)

* Discovery
• First Pass
» Metadata Rubric

Item Identification

* » Title Massachusetts Bay - Internal Wave Packets Extracted from SAR Imagery Binned in 1x1 minute grid cells
Short Name iw_binned1min
* Status Completed
Creation Date  
Revision Date  
• Publication Date 2006
* » Abstract

This feature class contains internal wave packets extracted from SAR imagery that were binned in 1x1 minute latitude/longitude polygon grid cells. Statistics were calculated for each polygon grid cell---in particular, internal wave packet frequency, total internal wave packet area, average internal wave packet area, minimum internal wave packet area, maximum internal wave packet area, the variance of internal wave packet areas and the standard deviation of internal wave packet areas. These statistics were calculated so as to better understand the frequency, size and location of internal wave packets in Massachusetts Bay.
* Purpose

Created to support the biogeographic assessment of Stellwagen Bank National Marine Sanctuary.
Notes

633
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
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
None 1998-2003
   
   
   

* Spatial Keywords

Thesaurus Keyword
None Gulf of Maine
None Massachusetts Bay
None Stellwagen Bank National Marine Sanctuary
   
   
   

Stratum Keywords

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Instrument Keywords

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Platform Keywords

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Physical Location

• » Organization National Centers for Coastal Ocean Science
• » City Silver Spring
• » State/Province MD
• Country  
• » Location Description

Data Set Information

* Data Set Scope Code Data Set
• Data Set Type  
• Maintenance Frequency None Planned
Maintenance Note
» Data Presentation Form vector 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 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/

Support Roles

» At least one Distributor Org, one Metadata Contact, one Point of Contact, and one Data Steward should be listed.
* » Support Role Data Steward
* » Date Effective From 2006
Date Effective To
Position NCCOS Scientific Data Coordinator
Email Address NCCOS.data@noaa.gov
Phone  
Fax  
Mobile  
URL  
Business Hours  
Contact Instructions
* » Support Role Distributor
* » Date Effective From 2006
Date Effective To
Position NCCOS Scientific Data Coordinator
Email Address NCCOS.data@noaa.gov
Phone  
Fax  
Mobile  
URL  
Business Hours  
Contact Instructions
* » Support Role Metadata Contact
* » Date Effective From 2006
Date Effective To
Position NCCOS Scientific Data Coordinator
Email Address NCCOS.data@noaa.gov
Phone  
Fax  
Mobile  
URL  
Business Hours  
Contact Instructions
* » Support Role Point of Contact
* » Date Effective From 2006
Date Effective To
Position NCCOS Scientific Data Coordinator
Email Address NCCOS.data@noaa.gov
Phone  
Fax  
Mobile  
URL  
Business Hours  
Contact Instructions
* » Support Role Principal Investigator
* » Date Effective From 2006
Date Effective To
Person Costa, Bryan
Email Address bryan.costa@noaa.gov
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Contact Instructions
* » Support Role
* » Date Effective From
Date Effective To
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* Contact Instructions
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* » Date Effective From
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* Contact Instructions
* » Support Role
* » Date Effective From
Date Effective To
* » Contact
* Contact Instructions

Extents

Currentness Reference Ground Condition

Extent Group 1

Extent Description

Extent Group 1 / Geographic Area 1

* » W° Bound -71.529044
* » E° Bound -69.109407
* » N° Bound 42.987986
* » S° Bound 41.235121
* » Description

Extent Group 1 / Vertical Extent

EPSG Code
Vertical Minimum
Vertical Maximum

Extent Group 1 / Time Frame 1

* » Time Frame Type Range
* » Start 1998-05-14
End 2003-09-29
Alternate Start As Of Info  
Alternate End As Of Info  
Description

Spatial Information

Spatial Resolution

Angular Distance  
Angular Distance Units  
Horizontal Distance  
Horizontal Distance Units  
Vertical Distance  
Vertical Distance Units  
Equivalent Scale Denominator  
Level of Detail Description

Spatial Representation

Grid Representation Used?  
Vector Representation Used? Yes
Text / Table Representation Used?  
TIN Representation Used?  
Stereo Model Representation Used?  
Video Representation Used?  

Grid Representation

Dimension Count
Cell Geometry
Transformation Parameter Available?  

Axis Dimension
Dimension Type
Size
Resolution
Resolution Units
Resolution Type
Description

Axis Dimension
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Size
Resolution
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Description

Vector Representation

Topology Level  
Complex Object Present? Yes
Complex Object Count 6814
Composite Object Present?  
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Vector Representation

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Reference Systems

Reference System

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Coordinate Y Resolution
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Column Resolution
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Distance Units
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Reference Direction
Reference Meridian

Vertical Resolution
Vertical Encoding Method
Vertical Resolution
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Access Information

Data License  
Data License URL  
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

None.
• Data Use Constraints

None. Acknowledgement of the National Oceanic and Atmospheric Administration, National Centers for Coastal Ocean Science, Center for Coastal Monitoring and Assessment, Biogeography Program would be appreciated in products derived from these data.
Metadata Access Constraints
Metadata Use Constraints

Distribution Information

Start Date
End Date
» Download URL
Distributor
File Name
Description
File Date/Time
File Type
FGDC Content Type
File Size
Application Version
Compression
Review Status
Start Date
End Date
» Download URL
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Description
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End Date
» Download URL
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Description
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Archive Information

Location
File Identifier
File Name
URL
Description
DOI
Archive Date
Archive Update Frequency
Location
File Identifier
File Name
URL
Description
DOI
Archive Date
Archive Update Frequency
Location
File Identifier
File Name
URL
Description
DOI
Archive Date
Archive Update Frequency

URLs

URL http://coastalscience.noaa.gov/projects/detail?key=141
Name  
URL Type Online Resource
File Resource Format  
Description
URL
Name
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File Resource Format
Description
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Name
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Description
URL
Name
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Description

Activity Log

Activity Time 2015-06-18
Activity Type  
Responsible Party  
Description

Date that the source FGDC record was last modified.
Activity Time 2017-04-05
Activity Type  
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
Activity Type  
Responsible Party  
Description

Partial upload of Spatial Info section only.
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Issues

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Author
Issue

Technical Environment

Description

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722

Data Quality

Representativeness
Accuracy
Analytical Accuracy
Horizontal Positional Accuracy
Vertical Positional Accuracy
Quantitation Limits
Bias
Comparability
Completeness Measure
Precision
Analytical Precision
Field Precision
Sensitivity
Detection Limit
Completeness Report

Unknown
Conceptual Consistency

Unknown
» Quality Control Procedures Employed

Data Management

» Have Resources for Management of these Data Been Identified?  
» Approximate Percentage of Budget for these Data Devoted to Data Management  
» 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  
 
» 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  
 
» 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?  
 

Lineage

» Lineage Statement

Sources

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Process Steps

Process Step Number 1
» Description

BACKGROUND:Synthetic Aperture Radar (SAR) can detect internal waves by emitting pulses of X-band (3cm), C-band (6cm) and L-band (24 cm) microwave energy, producing a two-dimensional radar backscatter map of the roughness of the ocean surface (Jackson and Apel, 2004 p.21, 41). In SAR imagery, internal waves appear as packets or groups of waves characterized by: 1) Alternating bands of bright and dark bands. The bright band is associated with the convergence zone, as determined by the orbital particle motion within the internal wave. 2) Curvilinear wave crests bent by refraction 3) Decreasing wave crest lengths from front to back of each packet 4) Decreasing wavelengths from front to back of each packet, indicating propagation direction and that nonlinear wave dispersion is in effect. 5) Decreasing wave amplitudes from front to back of each packet 6) Propagation parallel to significant isobaths Less often, internal waves may also be seen composed of only dark bands with no associated bright bands. This varying appearance is due to sensitivity to wind speed and wind direction, as well as to the orientation of the wave groups to the radar platform (Jackson and Apel, 2004 p.47). METHODS: In this study, the following methodology was used to identify and delineate internal wave packets in ESRI ArcGIS (ArcView) 9.1. First of all, a search extent was defined in order to narrow the geographic area in which to look for the internal waves. This area roughly covered from 42 deg 44 min 19 sec N to 41 deg 30 min 2 sec N and from 71 deg 8 min 3 sec W to 69 deg 36 min 30 sec W.. Each of the 66 SAR images (which were taken between May 14, 1997 and August 29, 2003) were examined for internal waves, using the internal wave packet characteristics listed above as an identification guide. A ESRI polygon shapefile was created with columns recording the SAR image tile name, its year, date and time, as well as the internal wave packet area, packet propagation direction and moon phase during which it occurred. All internal wave packets were digitized at a 1:350,000 scale and saved in this shapefile, along with the necessary attribute information. The internal wave packet data were analyzed using a non-parametric Kruskal-Wallis test for significant differences in the median with a Dunn's post hoc test.
Process Date/Time 2006-02-01 00:00:00
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Acquisition Information

Instruments

Instrument Unavailable Reason  
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FAQs

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Child Items

Rubric scores updated every 15m

Score Type Title
  Entity (ENT) InternalWave_Packets_Binned1minGrid
     
     
     

Related Items

Item Type Relationship Type Title
     
     
     

Catalog Details

Catalog Item ID 39342
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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