Beaches: Difference between revisions

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{{Beach}}
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[[File:Feeder bluff.jpg|left|300px|border]]
'''Beaches dominate much of Puget Sound’s shoreline. They are characterized by the active transport of sediment by wave action. They can be divided into those associated with coastal bluffs, where the coastline has retreated landward, and those associated with barrier beaches, where sediment has been deposited seaward of the original coastline. Barriers are numerous and include spits, tombolos, cuspate forelands and a variety of other forms. Most Puget Sound beaches (other than the pocket beaches along rocky coasts) exhibit net longshore transport of sediment and the development of discrete littoral drift cells, within which sources and sinks for sediment and a direction of net transport can be defined. (from [[Shipman 2008]])'''
'''Beaches dominate much of Puget Sound’s shoreline. They are characterized by the active transport of sediment by wave action. They can be divided into those associated with coastal bluffs, where the coastline has retreated landward, and those associated with barrier beaches, where sediment has been deposited seaward of the original coastline. Barriers are numerous and include spits, tombolos, cuspate forelands and a variety of other forms. Most Puget Sound beaches (other than the pocket beaches along rocky coasts) exhibit net longshore transport of sediment and the development of discrete littoral drift cells, within which sources and sinks for sediment and a direction of net transport can be defined. (from [[Shipman 2008]])'''
'''Beaches are organized into sites based on the extent [[littoral drift cells]].  The 2500 miles of Puget Sound shoreline has been divided into 744 distinct littoral cells where the presence of [[bluff-backed beach]] indicates the likely presence of sediment input and transport along retreating coastal bluffs ([[Cereghino et al 2012]]).'''


==Beach [[Core Topics]]==
'''Beaches are organized into sites based on the extent ''littoral drift cells''.  The 2500 miles of Puget Sound shoreline has been divided into 744 distinct littoral cells where the presence of [[bluff-backed beach]] indicates the likely presence of sediment input and transport along retreating coastal bluffs ([[Cereghino et al 2012]]).'''
{{beach core topic}}
 
Littoral drift cells are units of beach that include a source of sediment, conveyance of sediment along the shoreline, and a sink for sediment, either at a convergence zone where two drift cells merge, or offshore below the depth of wave action.  [[Shipman 2008]] differentiates between beach systems with littoral drift, and pocket beaches where sediment is relatively contained.
 
==Notes==
*A variety of [[Nearshore Salmon Recovery Planning]] efforts have considered salmon use of beaches.
*The [[ShoreZone Geodatabase]] provides a range of information about beach conditions beyond that provided by the [[PSNERP geodatabase]] including biological data.
*George Kaminsky at [[Washington State Department of Ecology]] is completing innovative boat-based LIDAR mapping of beach profile as part of a [[Mapping Bluff and Beach Change]] effort.
*The [[US Army Corps of Engineers]] has jurisdiction over beach modification, and regulates construction below ''ordinary high water'' in Puget Sound.  [[NOAA]] has recommended regulation from Highest Astronomical Tide (HAT).
*The [[Shoreline Master Program]] managed by [[WDOE]] requires [[jurisdictions]] to develop shoreline management plans that include protection and restoration strategies, and mandates "no net loss of shoreline ecological functions".
*There are limited data to describe natural rates of bluff erosion, and the relationship between sediment supply and beach structure.  The [[Measuring Coastal Bluff Recession Rates Throughout the Puget Sound Region]] effort by [[Coastal Geologic Services]] uses the aerial photograph record to estimate beach recession rate.
*Megan Dethier is noteworthy as a long time regional research scientist that has been studying [[Effects of bulkhead removal on beaches and their biota]] and [[Dethier 1990]] remains a seminal work in linking beach structure to biotic communities, and is used in the [[ShoreZone Geodatabase]].
*The [[ESRP]] program provides grants for beach protection and restoration.
*[[Marine Resource Committees]] provide a unique advisory function on coastal issues to Northern Puget Sound [[Counties]], with support from the [[Northwest Straits Commission]].


==Beach [[Topics]]==
==Beach [[Topics]]==
The following [[topics]] are related to beaches:  <DynamicPageList>
{|
|style="width:50%;vertical-align:top;"|
'''[[Core Beach Topics]]:''' 
<DynamicPageList>
category=beach
category=core topic
namespace=foo
ordermethod=sortkey
order=ascending
mode=unordered
suppresserrors=true
</DynamicPageList>
|style="width:50%;vertical-align:top;"|
'''Other Beach [[topics]]:'''  
<DynamicPageList>
category=beach
category=beach
category=topic
category=topic
notcategory=core topic
namespace=foo
namespace=foo
ordermethod=sortkey
ordermethod=sortkey
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suppresserrors=true
suppresserrors=true
</DynamicPageList>
</DynamicPageList>
|}


==Beach [[Sites]] and [[Places]]==
==Beach [[Sites]] and [[Places]]==
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</DynamicPageList>
</DynamicPageList>


==Beach [[Efforts]]==
 
The following [[efforts]] are being implemented by [[workgroups]] in beaches:  <DynamicPageList>
{|
|-
|style="width:50%;vertical-align:top;"|
==Beach Restoration==
<DynamicPageList>
category=beach
category=beach
category=effort
category=effort
category=restoration
namespace=foo
namespace=foo
ordermethod=sortkey
ordermethod=sortkey
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suppresserrors=true
suppresserrors=true
</DynamicPageList>
</DynamicPageList>
|style="width:50%;vertical-align:top;"|
==Other Beach Efforts==
<DynamicPageList>
category=beach
category=effort
notcategory=restoration
namespace=foo
ordermethod=sortkey
order=ascending
mode=unordered
suppresserrors=true
</DynamicPageList>
|}


==Beach [[Documents]]==
==Beach [[Documents]]==
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suppresserrors=true
</DynamicPageList>
</DynamicPageList>
==Old attribute pages==
These were identified as [[core topics]] in beach work completed by ESRP, and need to become categories and topic pages.
*[[:category:Beach Sediment Dynamics|Sediment Dynamics]]
*[[:category:Beach Shellfish Production|Shellfish Production]]
*[[:category:Beach Fish and Bird Forage|Fish and Bird Forage]]

Revision as of 03:54, 12 April 2016


Beach Icon.jpg

Beaches

Beaches form where wave action erodes shorelines creating an intertidal bench of mobile sediment
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Feeder bluff.jpg

Beaches dominate much of Puget Sound’s shoreline. They are characterized by the active transport of sediment by wave action. They can be divided into those associated with coastal bluffs, where the coastline has retreated landward, and those associated with barrier beaches, where sediment has been deposited seaward of the original coastline. Barriers are numerous and include spits, tombolos, cuspate forelands and a variety of other forms. Most Puget Sound beaches (other than the pocket beaches along rocky coasts) exhibit net longshore transport of sediment and the development of discrete littoral drift cells, within which sources and sinks for sediment and a direction of net transport can be defined. (from Shipman 2008)

Beaches are organized into sites based on the extent littoral drift cells. The 2500 miles of Puget Sound shoreline has been divided into 744 distinct littoral cells where the presence of bluff-backed beach indicates the likely presence of sediment input and transport along retreating coastal bluffs (Cereghino et al 2012).

Littoral drift cells are units of beach that include a source of sediment, conveyance of sediment along the shoreline, and a sink for sediment, either at a convergence zone where two drift cells merge, or offshore below the depth of wave action. Shipman 2008 differentiates between beach systems with littoral drift, and pocket beaches where sediment is relatively contained.

Notes

Beach Topics

Core Beach Topics:

Other Beach topics:

Beach Sites and Places

The following sites are in beaches:


Beach Restoration

Other Beach Efforts

Beach Documents

The following pages cite documents about beaches:

The following beach documents are uploaded to this wiki: