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Short Citation:
National Centers for Coastal Ocean Science, 2022: Massachusetts Bay - Internal wave packets digitized from SAR imagery and intersected with a bathymetrically derived slope surface, https://www.fisheries.noaa.gov/inport/item/39345.

Item Identification

Title: Massachusetts Bay - Internal wave packets digitized from SAR imagery and intersected with a bathymetrically derived slope surface
Short Name: iw_intersect_slope
Status: Completed
Publication Date: 2006
Abstract:

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.

Purpose:

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

Notes:

636

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 Bathymetry
None Internal Waves
None SAR
None Slope
None Synthetic Aperture Radar

Temporal Keywords

Thesaurus Keyword
UNCONTROLLED
None 1998-2003

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
None Massachusetts Bay
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: None Planned
Data Presentation Form: vector 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: 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

Data Steward

CC ID: 466593
Date Effective From: 2006
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Distributor

CC ID: 466595
Date Effective From: 2006
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Metadata Contact

CC ID: 466596
Date Effective From: 2006
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Point of Contact

CC ID: 466594
Date Effective From: 2006
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Principal Investigator

CC ID: 466597
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: 466600
W° Bound: -70.783468
E° Bound: -69.587834
N° Bound: 42.762758
S° Bound: 41.530988

Extent Group 1 / Time Frame 1

CC ID: 466599
Time Frame Type: Range
Start: 1998-05-14
End: 2003-09-29

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Vector Representation 1

CC ID: 584458
Complex Object Present?: Yes
Complex Object Count: 167098

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:

None.

Data 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.

URLs

URL 1

CC ID: 466591
URL: http://coastalscience.noaa.gov/projects/detail?key=141
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 466613
Activity Date/Time: 2015-06-18
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 466612
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: 584456
Activity Date/Time: 2017-09-13
Description:

Partial upload of Spatial Info section only.

Technical Environment

Description:

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

Data Quality

Completeness Report:

Unknown

Conceptual Consistency:

Unknown

Lineage

Process Steps

Process Step 1

CC ID: 466589
Description:

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)]

Process Date/Time: 2006-01-01 00:00:00

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity InternalWave_Intersected_Slope

Catalog Details

Catalog Item ID: 39345
GUID: gov.noaa.nmfs.inport:39345
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