Puget Sound Nearshore Change and Restoration Potential GEOG 469- Spring 2010 Aaron Blunt Jasmin...
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Transcript of Puget Sound Nearshore Change and Restoration Potential GEOG 469- Spring 2010 Aaron Blunt Jasmin...
Puget Sound Nearshore Change and Restoration Potential
GEOG 469- Spring 2010Aaron Blunt
Jasmin LafradezJames Schuyleman
Who are We?
PSNERP Partnership Miles Logsdon
Senior Lecturer UW – Department of Oceanography
Professor Timothy Nyerges UW – Department of Geography T.A. - Josef Eckert
GEOG 469 – PSNERP Group Aaron Blunt Jasmin Lafradez James Schuyleman
Puget Sound
o “Extends approximately 2,500 miles from the Canadian Border, throughout the Puget Sound and out the Strait of Juan de Fuca to Neah Bay.”
o http://www.pugetsoundnearshore.org/what.htm
o Contains Marine and Estuarine Shorelines.
o PSNERP envisions a healthy Puget Sound full of marine life (i.e. Orcas, Blue Herons, Native Shellfish, Salmon, as well as Eelgrass Meadows).
Source: www.ecy.wa.gov
Nearshore Ecosystem Restoration Project Overview
Established in 2001. Funded by: The US Army Corps of Engineers,
Washington Dept. of Fish and Wildlife as well as state and local organizations.
“…Evaluate significant ecosystem degradation in the Puget Sound Basin; to formulate, evaluate, and screen potential solutions to these problems and to recommend a series of actions and projects that have a federal interest and are supported by a local entity willing to provide the necessary items of local cooperation”
http://www.pugetsoundnearshore.org/what.htm
What is the Nearshore?
The Nearshore is the “connection” between land and water body. Includes Photic Zone downwards 100 meters up to the Coastline. Contains numerous marine and wildlife.
Nearshore is essential for ecological processes.
An understanding of Nearshore changes can increase public support.
Source: www.pugetsoundnearshore.org
Problem Statement & Purpose
Problem: Identify areas where Historical Shoreforms have transitioned to other types of Shoreforms.
Purpose: Contribute to the General Investigation for the PSNERP Partnership.
Project Goal
To conduct a Tier 1 change analysis between historical and current shoreforms in the Puget Sound. Implement a form of change analysis built on
the principal of land adjacency. In addition, implement another form of change
analysis on the principal of distance separation.
Project Methods PSNERP Database –
South Puget Sound Sub-Basin
Locate Historical Shoreforms
Locate Current Shoreform Records
Identify changes Buffer Adjacency
Source: http://extratextual.files.wordpress.com/2009/12/300px-golden_gardens_05.jpg
Need-to-know Questions 1. Where are Historical Barrier Beaches located at in the
South Puget Sound Sub-Basin? Software requirements: ArcGIS (ArcCatalog, ArcMap) Hardware requirements: ~1 GB memory space for South Puget Sound Sub-basin
Geodatabase provided by PSNERP.
SP_PSNERP_2.0.mdb (South Puget Sound Sub-basin
DatabaseFd_shoreform_change.shp
Query (H_Type = ‘BAB’)
Bab.shp(Selected Historical Barrier
beach Shoreforms)
Table of Shoreform
descriptions(‘lutSF’)
Need-to-know Questions2. Which of the Historical Barrier Beaches have transitioned to a different Shoreform?
Query(C_Type = ‘ART’ OR
C_Type = ‘BLB’)
Frequency of Shoreforms
SP_PSNERP_2.0.mdb (South Puget Sound Sub-basin
Database
Query (H_Type = ‘BAB’)
Bab.shp(Selected Historical
Barrier beach Shoreforms)
Fd_shoreform_change.shp
Table join ‘lutSF’(Join SF_type to
H_Type in fd_shoreform_ch
ange.shp)
Historical & Current
Shoreform Types
(Freq_SF.dbf)
Need-to-know Questions 3. Are changes in Historical Barrier Beaches
associated with adjacent shoreforms? After locating the Historical Barrier Beaches that have transitioned into
different shoreforms, we created an analysis zone equal to its historical length, that surrounds the changed shoreforms.
Shoreforms contained in those areas are classified as the “adjacent” shoreforms.
Query(C_Type = ‘ART’ OR
C_Type = ‘BLB’)
Diff_Current.shp(Historical Barrier beaches that
have changed to Artificial shoreforms or Bluff-backed
beaches)
Buffer(w/ length = ‘C_LenFull’)
Diff_Current_Buffer.shp(Zone surrounding
changed Historical Barrier Beaches)
Select by Location(Located Shoreforms adjacent to changed Barrier Beaches to
see how they are affected)
Adj_sf_change.shp(Adjacent
Shoerforms)
Frequency
SP_PSNERP_2.0.mdb (South Puget Sound Sub-basin
Database
Query (H_Type = ‘BAB’)
Bab.shp(Selected Historical
Barrier beach Shoreforms)
Fd_shoreform_change.shp
Table join ‘lutSF’(Join SF_type to
H_Type in fd_shoreform_ch
ange.shp)
Historical & Current
Shoreform Types
(Freq_SF.dbf)
Need-to-know Questions
4. What is the separation between the changed historical Barrier beaches?
A “straight line” distance analysis was conducted to compute the separation between each area of changed shoreforms.
Query(C_Type = ‘ART’ OR
C_Type = ‘BLB’)
Diff_Current.shp(Historical Barrier beaches that
have changed to Artificial shoreforms or Bluff-backed
beaches)
Buffer(w/ length = ‘C_LenFull’)
Diff_Current_Buffer.shp(Zone surrounding
changed Historical Barrier Beaches)
Select by Location(Located Shoreforms adjacent to changed Barrier Beaches to
see how they are affected)
Adj_sf_change.shp(Adjacent
Shoerforms)
Frequency
SP_PSNERP_2.0.mdb (South Puget Sound Sub-basin
Database
Query (H_Type = ‘BAB’)
Bab.shp(Selected Historical
Barrier beach Shoreforms)
Fd_shoreform_change.shp
Table join ‘lutSF’(Join SF_type to
H_Type in fd_shoreform_ch
ange.shp)
Historical & Current
Shoreform Types
(Freq_SF.dbf)
Straight Line DistanceDistance.aux
Project Results – Shoreform Frequency Table
o 11,656 total shoreforms in the South Puget Sound Sub-basin.o Total of 1,849 Historical Barrier Beaches
Project Results –Adjacent Shoreforms
Adjacent shoreforms have also been affected. Barrier Lagoons, Bluff-backed Beaches, and Barrier Estuaries are the types of
shoreforms that are adjacent to historical barrier beaches. Most of them did not transition from historical to current shoreform. Those that did, have transitioned to “Artificial” shoreforms. Most likely
affected by the increase in development.
o Adjacent Shoreforms Frequency Table
Summary 1,849 total Historical Barrier Beaches 64 total Historical Barrier Beaches transitioned to either
Bluff-backed beaches or Artificial shoreforms. Some shoreforms transitioned to artificial shoreforms, but
most of them did not change. The range of separation between changed shoreforms. Rather than having to focus on 64 individual areas of
changed shoreforms, the historical barrier beaches, that have changed, are clustered. Therefore, further change analysis will be concentrated to only 10 clusters.