kachemak bay, alaska integrated ocean & coastal mapping ...integrated ocean & coastal...
TRANSCRIPT
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Kachemak Bay, Alaska
Integrated Ocean & Coastal Mapping Project
Kris Holderied
NOAA Kasitsna Bay Laboratory
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Mapping Supports:
• NOAA Nautical Charting
• Resource Management
• Economic Development
• Emergency Response
Hydropalooza goal is to
demonstrate integrated ocean
and coastal mapping on
an operational survey
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Why Kachemak Bay?
• Ship schedules
• Management needs
• “Natural laboratory”
• Logistic support
• Partners!!
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What Is Ocean & Coastal Mapping?
Seafloor Mapping
Nautical
Charts
Shoreline Mapping
Tides &
Environment GPS
Positioning
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How has sea floor mapping changed over time?
Leadline - slow
- not many depths
Single Beam Sonar
- faster
- more soundings
- single line
Multi-beam Sonar - full-bottom coverage
- need better ship
positioning
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High
Resolution
Mapping
(blue is deep) Single-beam sonar
- interpolated, less detail
Multi-beam sonar
- much more information
Alaska North Slope
50 ft wreck
found near
Homer spit
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Multibeam mapping animation courtesy: NAVOCEANO
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Alaska
mapping
40% of national
NOAA survey
effort is in
Alaska
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Shoreline mapping with
NOAA Cessna Citation aircraft
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Figure adapted from Brock et al., 2004
Infrared Beam
Laser beam
Forward
Motion
Shoreline
Mapping
- Land
elevations
from laser
(LiDAR)
- Photos
- Used to
determine
shoreline
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Hydropalooza Schedule
• Shoreline: Jul-Aug 2008
(aircraft) 2010 (TBD)
• Sea Floor: Jul-Aug 2008
(ships) Aug-Sep 2009
• Sediments: Jul 2008
Aug 2009
• Data processing – ongoing!
NOAA Ships
FAIRWEATHER
and RAINIER
NOAA Cessna
Citation aircraft
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Ship survey
plans
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Shoreline
Mapping
Plans
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Extra tide gauges and GPS stations
- Tide is largest source of error in depth mapping
- Need very precise location information
- Temporary tide gauges at Kasitsna Bay Lab,
Bear Cove, Port Graham and Anchor Point
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2008 Seafloor
Mapping
Red – shallow
Blue - deep
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2009 Sea floor mapping results 2009 Seafloor
Mapping … through Aug 25
Red – shallow
Blue - deep
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Combined
Depths
2008 & 2009
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Seafloor Features – 2008 mapping
Bedrock outcrop
Landslide
Wreck off Homer Spit
Seafloor features – 2008
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Homer Spit – landslide and bedrock outcrop
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Bear Cove – glacial moraine and pinacles
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Wreck 1 Wreck 2
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2008 Shoreline Mapping (Jul 31– Aug 2)
Airborne digital photos and land elevations
(south side of Bay not yet flown)
> 1700 camera images
> 166 million LiDAR points
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End of Homer Spit in 3-D from LiDAR
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Baycrest Hill – LiDAR elevations
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Photos draped over
LiDAR elevations
Bishop’s Beach
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Shoreline mapping examples
Coastal Erosion
Applications
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Land
&
Water
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NOAA Kasitsna Bay Lab
Why we love mapping data
Habitat change
studies
Habitat mapping
Oceanography Education
Technology applications
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Participating NOAA Offices
National Ocean Service (NOS)
• Office of Coast Survey
• National Geodetic Survey
• Center for Operational Oceanographic Products and Services
• National Centers for Coastal Ocean Science
– Kasitsna Bay Laboratory
– National Status and Trends Program
• Office of Coastal Resource Management/National Estuarine Research Reserve
• Coastal Services Center
National Environmental Satellite Data and Information Service (NESDIS)
• National Geophysical Data Center
Office of Marine & Aircraft Operations (OMAO)
• NOAA Ship FAIRWEATHER (S-220)
• NOAA Ship RAINIER (S-221)
• NOAA Citation Aircraft (N52RF)
Office of Oceanic & Atmospheric Research (OAR)
• West Coast and Polar Regions National Undersea Research Center
National Marine Fisheries Service (NMFS)
• Habitat Conservation Division, Alaska Regional Office
• Alaska Fisheries Science Center
Alaska Regional Collaboration Team (ARCTic)
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For more information:
Hydropalooza:
http://www.hydropalooza.noaa.gov/
NOAA mapping data:
http://www.ngdc.noaa.gov/mgg/bathymetry/relief.html
NOAA Kasitsna Bay Laboratory:
http://www.ccfhr.noaa.gov/about/kasitsna.html
Thanks!!