Olympic Coast National Marine Sanctuary - mos110_0204a.tif - Multibeam backscatter mosaic from survey area 110_0204a
Data Set (DS) | Office of National Marine Sanctuaries (ONMS)GUID: gov.noaa.nmfs.inport:40081 | Updated: May 30, 2023 | Published / External
Summary
Short Citation
Office of National Marine Sanctuaries, 2024: Olympic Coast National Marine Sanctuary - mos110_0204a.tif - Multibeam backscatter mosaic from survey area 110_0204a, https://www.fisheries.noaa.gov/inport/item/40081.
Full Citation Examples
A multibeam backscatter image (0-35 m water depths) mosaiced from hydrographic data collected during a July/August 2002seafloor survey. A Reson 8101 multibeam echosounder (240 kHz) was pole mounted to the bow of a California State University Monterey Bay survey launch to acquire the sonar data. A TSS POS/MV was used to compensate for vessel motion and a Seabird SVP19 plus was used to measure sound speed. Navigation and line planning were accomplished using Hypack software. Sonar packets, motion sensor, and navigation data were logged in Isis Sonar as XTF files. Backscatter was normalized and mosaiced using software developed by the University of New Brunswick Ocean Mapping Group.
Distribution Information
No Distributions available.
Access Constraints:None
Please recognize OCNMS as the source of this information. Not to be used for navigation.
Controlled Theme Keywords
environment, oceans
Child Items
Type | Title |
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Entity | mos110_0204a.tif.vat |
Contact Information
Point of Contact
OCNMS GIS Coordinator
olympiccoast@noaa.gov
Metadata Contact
OCNMS GIS Coordinator
olympiccoast@noaa.gov
Extents
-124.76986° W,
-124.67° E,
48.022178° N,
47.904719° S
2002-07-25
Item Identification
Title: | Olympic Coast National Marine Sanctuary - mos110_0204a.tif - Multibeam backscatter mosaic from survey area 110_0204a |
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Short Name: | mos110_0204a |
Status: | Completed |
Publication Date: | 2007-12-31 |
Abstract: |
A multibeam backscatter image (0-35 m water depths) mosaiced from hydrographic data collected during a July/August 2002seafloor survey. A Reson 8101 multibeam echosounder (240 kHz) was pole mounted to the bow of a California State University Monterey Bay survey launch to acquire the sonar data. A TSS POS/MV was used to compensate for vessel motion and a Seabird SVP19 plus was used to measure sound speed. Navigation and line planning were accomplished using Hypack software. Sonar packets, motion sensor, and navigation data were logged in Isis Sonar as XTF files. Backscatter was normalized and mosaiced using software developed by the University of New Brunswick Ocean Mapping Group. |
Purpose: |
The data can be used with geographic information systems (GIS) software to display various seafloor characteristics. These data are intended for science researchers, students, policy makers, and the general public. |
Notes: |
1428 |
Keywords
Theme Keywords
Thesaurus | Keyword |
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ISO 19115 Topic Category |
environment
|
ISO 19115 Topic Category |
oceans
|
UNCONTROLLED | |
NOS Data Explorer Topic Category | Environmental Monitoring |
None | Coastal Geology |
None | Isis |
None | Marine Geology |
None | Multibeam Backscatter |
None | Remote Sensing Image |
None | Reson |
Spatial Keywords
Thesaurus | Keyword |
---|---|
UNCONTROLLED | |
None | Cake Rock |
None | Carroll Island |
None | Lapush |
None | Olympic Coast |
None | Sealion Rock |
None | Washington |
Physical Location
Organization: | Office of National Marine Sanctuaries |
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City: | Silver Spring |
State/Province: | MD |
Data Set Information
Data Set Scope Code: | Data Set |
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Maintenance Frequency: | As Needed |
Data Presentation Form: | remote-sensing image |
Distribution Liability: |
Please recognize the Olympic Coast national marine sanctuary (OCNMS) as the source of these data. The Olympic Coast National Marine Sanctuary nor any of their employees, make any warranty, express or implied, including the warranties of merchantability and fitness for a particular purpose, 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. Original data elements may have been compiled from various sources. Spatial information may not meet National Mapping Accuracy Standards. This information may be updated, corrected, or otherwise modified without notification. For additional information about this data contact the Olympic Coast national marine sanctuary. |
Data Set Credit: | Steven S. Intelmann |
Support Roles
Data Steward
Date Effective From: | 2007-12-31 |
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Date Effective To: | |
Contact (Position): | OCNMS GIS Coordinator |
Address: |
115 East Railroad Ave Suite 301 Port Angeles, WA 98362 |
Email Address: | olympiccoast@noaa.gov |
Distributor
Date Effective From: | 2007-12-31 |
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Date Effective To: | |
Contact (Position): | OCNMS GIS Coordinator |
Address: |
115 East Railroad Ave Suite 301 Port Angeles, WA 98362 |
Email Address: | olympiccoast@noaa.gov |
Metadata Contact
Date Effective From: | 2007-12-31 |
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Date Effective To: | |
Contact (Position): | OCNMS GIS Coordinator |
Address: |
115 East Railroad Ave Suite 301 Port Angeles, WA 98362 |
Email Address: | olympiccoast@noaa.gov |
Point of Contact
Date Effective From: | 2007-12-31 |
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Date Effective To: | |
Contact (Position): | OCNMS GIS Coordinator |
Address: |
115 East Railroad Ave Suite 301 Port Angeles, WA 98362 |
Email Address: | olympiccoast@noaa.gov |
Extents
Currentness Reference: | Ground Condition |
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Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -124.76986 | |
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E° Bound: | -124.67 | |
N° Bound: | 48.022178 | |
S° Bound: | 47.904719 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Discrete |
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Start: | 2002-07-25 |
Spatial Information
Spatial Representation
Representations Used
Grid: | Yes |
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Grid Representation 1
Dimension Count: | 3 | ||||
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Cell Geometry: | Point | ||||
Transformation Parameters Available?: | No | ||||
Axis Dimension 1 |
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Axis Dimension 2 |
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Axis Dimension 3 |
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Access Information
Security Class: | Unclassified |
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Data Access Constraints: |
None |
Data Use Constraints: |
Please recognize OCNMS as the source of this information. Not to be used for navigation. |
URLs
URL 1
URL: | http://olympiccoast.noaa.gov/science/habitatmapping/habitatmapping.html |
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URL Type: |
Online Resource
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Activity Log
Activity Log 1
Activity Date/Time: | 2008-06-15 |
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Description: |
Date that the source FGDC record was last modified. |
Activity Log 2
Activity Date/Time: | 2017-04-05 |
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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
Activity Date/Time: | 2017-09-13 |
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Description: |
Partial upload of Spatial Info section only. |
Activity Log 4
Activity Date/Time: | 2018-02-08 |
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Description: |
Partial upload of Positional Accuracy fields only. |
Technical Environment
Description: |
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.2.2.1350 |
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Data Quality
Horizontal Positional Accuracy: |
Accuracy of the horizontal coordinates is on the order of 10-30m based on the uncertainty in position of side scan sonar towfish relative to ships DGPS position. Horizontal layback is more accurate than lateral offsets since any lateral offset in the towfish position (due to side currents) is unaccounted for in the layback calculations. |
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Completeness Report: |
Unknown |
Conceptual Consistency: |
Not Tested |
Lineage
Process Steps
Process Step 1
Description: |
Sonar packets, attitude and position data logged in Isis Sonar. |
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Process Step 2
Description: |
XTF conversion to Caris HDCS format. |
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Process Step 3
Description: |
Swath editing and subset editing of multibeam bathymetry data in Caris Hips |
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Process Step 4
Description: |
Build PFM dataset in Fledermaus by importing Caris HDCS libraries. |
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Process Step 5
Description: |
Area-based editing of multibeam bathymetry in Fledermaus |
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Process Step 6
Description: |
Dump PFM edits of multibeam bathymetry back into the Caris HDCS libraries. |
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Process Step 7
Description: |
Using Caris Hips, export day, time, profile, and beam for all rejected soundings for each line file as individual text files. |
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Process Step 8
Description: |
Unravel the XTFs to OMG format to create merged files specific to sonar (ie 8101). |
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Process Step 9
Description: |
Filter soundings on Reson quality Flags |
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Process Step 10
Description: |
Load HDCS rejected flags for previous Caris export process. |
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Process Step 11
Description: |
Convert XTF navigation to OMG format. |
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Process Step 12
Description: |
Copy vessel configuration for each survey line. |
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Process Step 13
Description: |
Reduce bathy data by merging orientation and raytrace using svp data. |
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Process Step 14
Description: |
Invert heave data -- XTF opposite of OMG convention. |
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Process Step 15
Description: |
Compile decimated navigation data for quick viewing. |
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Process Step 16
Description: |
Thin navigation removing redundant points. |
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Process Step 17
Description: |
Merge navigation into bathymetry. |
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Process Step 18
Description: |
Make DTM and sun illuminate. |
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Process Step 19
Description: |
Compute angular response curve estimates from backscatter by using a rolling bin of 100 pings. DTM is used for grazing angle estimation. |
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Process Step 20
Description: |
Generate calibrated backscatter for ri theta, snippets, and side scan packets specific to sonar type(ie 8101 or 8125) using rolling beam pattern |
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Process Step 21
Description: |
Fill lone pixels (cosmetics) |
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Process Step 22
Description: |
Mosaic lines using autoseam option (splits adjacent lines and sews seam) and auto_dg (down samples to mosaic resolution to avoid aliasing. |
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Process Step 23
Description: |
Calculate histogram and apply stretch to DN values. |
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Process Step 24
Description: |
Export mosaic from OMG as pgm file. |
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Process Step 25
Description: |
Convert PGM file to TIF file using linux XV utility. |
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Process Step 26
Description: |
Create tif world file from mosaic bounds file. |
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Process Step 27
Description: |
Convolution filter (3x3 window) in Erdas Imagine |
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Process Step 28
Description: |
Edge Enhancement filter (3x3 window) in Erdas Imagine |
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Child Items
Rubric scores updated every 15m
Type | Title | |
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Entity | mos110_0204a.tif.vat |
Catalog Details
Catalog Item ID: | 40081 |
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GUID: | gov.noaa.nmfs.inport:40081 |
Metadata Record Created By: | Tyler Christensen |
Metadata Record Created: | 2017-04-05 14:27+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2023-05-30 18:10+0000 |
Metadata Record Published: | 2018-02-08 |
Owner Org: | ONMS |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2018-02-08 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2019-02-08 |