Hydrodynamics and Coastal Change along Pt. Whitehorn ... · Hydrodynamics and Coastal Change along...
Transcript of Hydrodynamics and Coastal Change along Pt. Whitehorn ... · Hydrodynamics and Coastal Change along...
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Hydrodynamics and Coastal Change along Pt. Whitehorn – Cherry Pt.
Eric Grossman, U.S. Geological Survey & WWU [email protected]
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Physical Processes
1. Quantify Sediment transport and Physical Processes (erosion, sedimentation)
2. Assess Importance to Coastal Infrastructure and Ecosystems
3. Predict Coastal Response to Sea-Level Rise and Climate Change
Goals:
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Supports:
Talk Outline
WWU Thesis, Meghan Weaver (Scott Linneman, Eric Grossman)
USGS Coastal Habitats in Puget Sound Project (CHIPS) WRIA1 Nearshore Habitat Restoration Prioritization EPA Region 10 Scientific Investigation of Vulnerability of Coastal Infrastructure, Ecosystems and Communities State Aquatic Reserve Program
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2009 lidar
2006 Multibeam
Bellingham Bay
Coastal Habitats in Puget Sound Project (CHIPS)
Nearshore Habitat Structure
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Coastal Habitats in Puget Sound Project (CHIPS)
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slump
Coastal Habitats in Puget Sound Project (CHIPS)
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Coastal Habitats in Puget Sound Project (CHIPS)
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Nearshore Use & Residency
Year
2008 2009 2010
Mean c
atc
h p
er
set
0
2
4
6
8
10
Continuous, mud
N Frk fragmented, sand
Continuous, sand
S Frk fragmented, sand
Herring Use of Eelgrass
Undisturbed
Less Disturbed Fragmented, Altered Flow
Disturbed, Altered Sediment
Coastal Habitats in Puget Sound Project (CHIPS)
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Talk Outline Coastal Habitats in Puget Sound Project (CHIPS)
Tools and Models to Inform Adaptive Management
Nisqually Indian Tribe & USFWS Nisqually National Wildlife Refuge Estuary Restoration
WA-DNR Nisqually Reach Aquatic Reserve Management Plan
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Online tool for scientists and resource managers to assess vulnerability
Coastal Vulnerability
Grossman et al. (2011)
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Johannessen, 2006
Forage Fish Spawning
Beaches
Vulnerable Shoreline, Infrastructure, Ecosystem, and Resources
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Dynamic Geology and Oceanographic Processes
Bluffed Back Beaches Feeder Bluffs
Johannessen, 2006
Rapidly eroding bluff segments
-0.7 ft/yr (1950-2003)
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Complex Habitat
Eelgrass
Dynamic Sediment Transport Processes
R2% = 0.27(SHL)1/2
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December 25, 2011
Waves, Storm Surge Sea-Level Rise Groundwater Seepage Sediment Supply/Source
Physical Processes
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Cumulative Effects
Winds and waves
Inverse Barometer
Grossman et al. (2012)
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Sea-Level Rise
National Research Council National Climate Assessment (2012)
5-yr Event
At 2050 a 100-yr Event
Tebaldi et al (2012)
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Regional Sea Level Anomaly?
Imminent Acceleration of Sea-Level Rise with change in PDO? Wind stress?
Brominski et al. (2011)
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Regional Sea Level Anomaly?
Salish Sea Water Temperature
Beamish et al. (2009)
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Wave Sensor (Jan – April, 2012) Tides @ 15 min Waves @ 1hr (8 min)
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Develop Wave/Circulation Model
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Groundwater Seeps & Bluff Erosion
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Grossman and Linneman (in prep.)
Groundwater Seeps & Bluff Erosion
1. Erosion, Sediment production processes 2. Temperature/salinity inputs alongshore
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1. Identify needs of Workgroup, Community 2. Fill Information Gaps - Nearshore elevation, habitat structure - Physical processes and nearshore response - Habitat Use (eelgrass, complex habitat) 3. Develop Predictive Tools to will help plan for resilience
Next Steps:
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Wave Energy Attenuation
Stevens and Lacy (In Press)