39344 iw_intersect_bathymetry Data Set Published / External 37201 SBNMS_Assess_Internal_Waves Project Completed 2006 This feature class contains internal wave packets digitized from SAR imagery and intersected with bathymetry for Massachusetts Bay. The internal wave packets were digitized at a 1:350,000 scale and the bathymetry had a 360 x 360 meter resolution. Created to support the biogeographic assessment of Stellwagen Bank National Marine Sanctuary. 635 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 Theme ISO 19115 Topic Category imageryBaseMapsEarthCover Theme ISO 19115 Topic Category oceans Theme NOS Data Explorer Topic Category Environmental Monitoring Theme Bathymetry Theme Internal Waves Theme SAR Theme Synthetic Aperture Radar Temporal 1998-2003 Spatial Massachusetts Bay Spatial Stellwagen Bank National Marine Sanctuary National Centers for Coastal Ocean Science Silver Spring MD Data Set None Planned vector digital data 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. 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/ 41304 InternalWave_Intersected_Bathymetry Published / External Completed Internal wave packets intersected with a bathymetrically derived slope surface | Description Source: NOAA Converted from FGDC using 'fgdc_to_inport_xml_entity.pl' script. 1 OBJECTID Unknown No No Active Internal feature number. | Description Source: ESRI Sequential unique whole numbers that are automatically generated. 2 Shape Unknown No No Active Feature geometry. | Description Source: ESRI Coordinates defining the features. 3 Image_Tile VARCHAR No No Active SAR image from which internal wave packet was digitized | Description Source: NOAA SAR Image: SAR image from which internal wave packet was digitized | 4 Year VARCHAR No No Active Year SAR image taken and internal wave packet occured | Description Source: NOAA Year: Year SAR image taken and internal wave packet occured | 5 Julian_Day VARCHAR No No Active Julian day SAR image taken and internal wave packet occured | Description Source: NOAA Julian Day: Julian day SAR image taken and internal wave packet occured | 6 Month VARCHAR No No Active Month SAR image taken and internal wave packet occured | Description Source: NOAA Month: Month SAR image taken and internal wave packet occured | 7 Day VARCHAR No No Active Day SAR image taken and internal wave packet occured | Description Source: NOAA Day: Day SAR image taken and internal wave packet occured | 8 Hour VARCHAR No No Active Hour SAR image taken and internal wave packet occured | Description Source: NOAA Hour: Hour SAR image taken and internal wave packet occured | 9 Minute VARCHAR No No Active Minute SAR image taken and internal wave packet occured | Description Source: NOAA Minute: Minute SAR image taken and internal wave packet occured | 10 Second VARCHAR No No Active Second SAR image taken and internal wave packet occured | Description Source: NOAA Second: Second SAR image taken and internal wave packet occured | 11 Zone VARCHAR No No Active Time Zone | Description Source: NOAA Zone: Time zone in which hours and minutes were recorded | 12 Direction VARCHAR No No Active Propagation direction of internal wave packet | Description Source: NOAA Direction: Propagation direction of internal wave packet | 13 Moon_Phase VARCHAR No No Active Moon phase when internal wave packet occured | Description Source: NOAA Moon Phase: Moon phase when internal wave packet occured | 14 Tide VARCHAR No No Active Tide phase when internal wave packet occured | Description Source: NOAA Tide: Tide phase when internal wave packet occured | 15 Comment Unknown No No Active Additional information about internal wave packets | Description Source: NOAA Additional information about internal wave packets 16 IW_ID Unknown No No Active Unique ID # for each internal wave packet | Description Source: NOAA Unique ID # for each internal wave packet 17 Depth_Cell_ID Unknown No No Active Unique ID # for each depth raster grid cell | Description Source: NOAA Unique ID # for each depth raster grid cell 18 Depth_m NUMBER No No Active Depth (in meters) | Description Source: NOAA meters -282 - -10 19 Depth_Cell_Area NUMBER No No Active Area (in square meters) of each depth raster grid cell that underneath internal wave packet | Description Source: NOAA square meters 0.000279 - 5540980.163 20 IW_Area NUMBER No No Active Area (in square meters) of internal wave packets | Description Source: NOAA square meters 784661.291 - 373326606.810 21 Wght_Mean_Depth Unknown No No Active Weight given to each depth raster grid cell based on area | Description Source: NOAA Weight given to each depth raster grid cell based on area Data Steward 2006 Position NCCOS Scientific Data Coordinator NCCOS.data@noaa.gov Distributor 2006 Position NCCOS Scientific Data Coordinator NCCOS.data@noaa.gov Metadata Contact 2006 Position NCCOS Scientific Data Coordinator NCCOS.data@noaa.gov Point of Contact 2006 Position NCCOS Scientific Data Coordinator NCCOS.data@noaa.gov Principal Investigator 2006 Person Costa, Bryan bryan.costa@noaa.gov Ground Condition -70.783468 -69.587834 42.762758 41.530988 Range 1998-05-14 2003-09-29 Yes Yes 101986 Unclassified Please contact the Stellwagen Banks NMS Research Coordinator for additional information on data access (david.wiley@noaa.gov); None. None. Acknowledgement of the National Oceanic and Atmospheric Administration, Centers for Coastal Ocean Science, Center for Coastal Monitoring and Assessment, Biogeography Program would be appreciated in products derived from these data. https://coastalscience.noaa.gov/projects/detail?key=141 Online Resource 2015-06-18 Date that the source FGDC record was last modified. 2017-04-05 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. 2017-09-13 Partial upload of Spatial Info section only. Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 Unknown Unknown 1 METHODS:The following methods were used to calculate the mean depth (weighted by area) at which each internal wave occured in the SAR imagery. As ArcGIS 9.1 Spatial Analyst Zonal Stats function does not accomodate overlapping polygons, we first converted the bathymetric raster to a vector polygon shapefile. This bathymetric vector polygon was then intersected with the internal wave packet polygon shapefile.The next step was to calculate the mean depth (weighted by area) for each internal wave packet. To do so, we used the following equation:Area Weighted Mean (for depth) by internal wave packet =[((depth 1 x area 1) + (depth 2 x area 2) + (depth 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-1After the mean depth (weighted by area) was calculated for each internal wave packet, the mean depth (weighted by area) was calculated for ALL internal waves. The same formula was used as above:Area Weighted Mean (for depth) =[((mean depth 1 x internal wave packet area 1) + (mean depth 2 x internal wave packet area 2) + (mean depth n-1 x internal wave area n-1)) / (internal wave packet area 1 + internal wave packet area 2 + internal wave packet area n-1)] 2006-01-01T00:00:00 41304 Entity gov.noaa.nmfs.inport:39344 Tyler Christensen 2017-04-05T12:52:00 SysAdmin InPortAdmin 2025-05-15T19:16:09 2017-09-13 National Centers for Coastal Ocean Science NCCOS 1002 Public No No 2017-09-13 1 Year 2018-09-13