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Haznet Research Topic - Coastal Erosion return to Research Topic Listing NSGD#:
MICHU-H-88-001 Abstract:
Vegetation plays an important role in controlling erosion. This booklet
provides the coastal Great Lakes property owner with information and
guidelines on how to use vegetation to help stabilize and preserve
the shoreline. Although plants alone cannot protect the shoreline
from wave attack or groundwater seepage, they help prevent soil runoff
and wind erosion. They are effective and inexpensive when used in
conjunction with structures to preserve the shoreline. With illustrations
and step-by-step instructions, this guide can help you choose the
vegetation best suited for your shore property, tells how to prepare
your site for planting, and how to maintain a vegetative cover. Lists
of additional sources of information and related publications are
included. Abstract: The fifty-four papers presented here cover numerous aspects of the science, technology and administration of the coastal zone. Fourteen papers are concerned with coastal erosion, dune protection or the efficacy of engineering solutions in connection with these problems. About the same number concern the coastal environment: ecological impacts, water quality, wetlands management, and marine ecology. Conflicting interests in use and development of the waterfront are discussed in about ten papers. Other topics include coastal regulation and litigation, risk management, information management for coastal decision-making, and public awareness and education. Notes: See entries VSGCP-Z-015 - 068 for individual papers.W2152CczmtHCZM symposium back
to top Abstract:
This book lays out the risks of building on the sifting sands and
eroding sea cliffs that typify the U.S. Pacific coast. It also looks
at some of the ways people have tried to stop the changing coastline
from doing what comes naturally. Although written mainly for lay readers,
the book grew out of an October, 1990 conference of coastal geologists,
oceanographers, engineers, planners, and resource managers. The book
discusses the effects of El Niño on beach and shore erosion
and recent research into factors that control sea cliff erosion, as
well as evidence for periodic great subduction zone earthquakes. Planning
and engineering approaches to hazard mitigation on the west coast
and the successes and shortcomings of public policies designed to
deal with development in hazardous areas are addressed. Abstract:
This book lays out the risks of building on the sifting sands and
eroding sea cliffs that typify the U.S. Pacific coast. It also looks
at some of the ways people have tried to stop the changing coastline
from doing what comes naturally. Although written mainly for lay readers,
the book grew out of an October, 1990 conference of coastal geologists,
oceanographers, engineers, planners, and resource managers. The book
discusses the effects of El Niño on beach and shore erosion
and recent research into factors that control sea cliff erosion, as
well as evidence for periodic great subduction zone earthquakes. Planning
and engineering approaches to hazard mitigation on the west coast
and the successes and shortcomings of public policies designed to
deal with development in hazardous areas are addressed. Abstract: Oregon's public beaches and adjacent developed and undeveloped dunes and bluffs experience erosion and other hazards due to winter storm waves, weathering, and geologic instability. In privately owned developed areas, the typical hazard response is to install a hard shore protection structure, leading some to question the effectiveness of policies that were designed to discourage such structures. An evaluation of shore protection and land use policy implementation was undertaken using a geographic information system to analyze outcomes of policy decisions within the Siletz littoral cell on the central Oregon coast. Study results, detailed in this article, found that policies designed to mitigate hazards, control upland development, and protect the beach are often ineffective. Based on this analysis, Oregon's ocean shore protection management regime needs an overhaul. back
to top Abstract:
Shoreline erosion is a natural process caused by a gradual rise in
sea level and prevailing wind and current conditions. But in many
cases, it is accelerated by intensive use, development, and mismanagement.
Establishing vegetation is much cheaper than structural methods of
erosion control, and the new marsh provides habitat, food and nutrients
for organisms in the surrounding estuarine waters. This booklet describes
how to cultivate or transplant marsh vegetation for estuarine erosion
control and how to fertilize and maintain it. The placement and construction
of an offshore breakwater which, combined with a planted marsh, can
provide long-lasting protection at a relatively low cost are described.
The manual also features up-to-date planting tips and advice on site
suitability. Abstract:
Marsh grasses have been effectively used to control erosion along
estuarine shorelines. Project success has been limited to sites with
relatively low wave activity. A combination of marsh and low-cost
breakwater can substantially improve the planting success rate and
increase the wave exposure limits at significantly lower cost than
more traditional erosion control alternatives. Abstract: Oregon's Coastal Management Program, approved by the federal government in 1977, requires that local coastal governments and state regulatory programs address management issues such as geologic hazards. This calls for site inspections and reports from registered geologists when development is proposed in a hazardous zone. Between 1980 and 1982, four developments were constructed on active landslides in Newport, Oregon. Each site had been investigated by the same registered geologist, who recommended development even though his own hazards report, prepared in 1978 for the county, recognized three of these sites as significant geological hazards due to landslide activity. Soon after construction, each development was either partially or totally destroyed by continued landslides. The Oregon Board of Geologist Examiners suspended his registration after a lengthy investigation. However, they left the door open to future reinstatement, in spite of their having declared him `incompetent' and `negligent.' Notes:
0688 czmt no charge. Geologist approves construction on active landslides Abstract: Barrier islands protect the wetlands of the US from storms. Wave action destroys and rebuilds. These must be protected and rebuilt. back
to top Abstract:
Based on the use of adhesives in Florida, North Carolina Sea Grant
conducted limited field and laboratory tests of a new adhesive patching
method to repair oceanfront sandbags. The tests indicate that the
method is superior to conventional repair practices and easily used
to fix small tears (between 3 and 12 inches across). This publication
provides an illustrated, step-by-step description of how to patch
a sandbag using marine adhesive sealants, and also suggests ways to
prevent sandbag punctures. Abstract:
This videotape was produced as a self-teaching tool for individuals
who wish to assess the likely risks to Great Lakes coastal property
posed by shore erosion and coastal flooding. Designed to be used in
conjunction with the "Coastal Processes Workbook" (WISCU-H-87-002),
the videotape shows how to make a reasonable estimate of these risks
for most lakeside structures. A more detailed "Processes Manual"
(WISCU-H-87-001), is available for those who may wish to teach this
assessment process to small groups. Though geared specifically to
Wisconsin's Great Lakes shores, the coastal processes described generally
affect the entire Great Lakes shoreline. back
to top Abstract: Shoreline property is scarce and highly desired by many for home sites. The beauty and desirability of a coastal home site must be weighed against the site's susceptibility to coastal flooding and erosion. Potential buyers in the market for shoreline property must ask and find out the answer to several critical questions in order to avoid unpleasant surprises. In some cases sellers and agents may not be required to disclose erosion risk. It is up to the buyer to find the answer to the questions discussed here in the context of Great Lakes waterfront property. Notes:
9686 misc Buying shoreline property--forewarned is forearmed Abstract: During the 1985-86 period of high lake levels and storm damage on the Great Lakes, coastal property owners, real estate agents, prospective buyers, appraisers, bankers and insurers faced a dilemma with little available professional assistance: how to evaluate the risks of coastal investment? Here coastal engineering methods were used along with available information on erosion rates in developing an easy-to-understand process for evaluating the risks of flooding and erosion for specific coastal sites. The materials developed feature a series of simple steps and advice on how to evaluate the likely effects of high lake levels, storm waves and shoreline recession. A coastal processes training manual, workbook, slide set and video tape were produced and used in a series of workshops held in four of Wisconsin's major coastal cities. The paper concludes with the results of a survey of people who either received the training or just the written materials. Notes:
0763 educ no charge for single copies. Assessing risk in coastal investment
Abstract:
If you are fortunate enough to have a home bordering Delaware's lush
wetlands or lying near the state's famous beaches, you have the opportunity
to landscape your property with native coastal plants rather than
commonly used traditional nursery stock. Such plantings are attractive,
require little maintenance, and can help control the erosion and flooding
often associated with coastal environments. This bulletin is designed
to describe the plants that are naturally adapted to Delaware's dunes
and saltwater wetlands and to familiarize you with their use as landscape
alternatives. Abstract: Any shore with a sandy beach is susceptible to beach loss from erosion. Nearly 25% (17 miles) of Oahu's beaches have been lost or significantly narrowed over this century. This brochure identifies several facts about beach erosion and the new Coastal Lands Program at the Department of Land and Natural Resources. It also provides some information concerning the difference between coastal erosion and beach erosion. back
to top Abstract:
While shoreline erosion can only be prevented at great expense, economic
losses are minimized by knowing where and how fast shoreline erosion
is likely to occur. Future problems are avoided by locating new structures
and septic fields back from the bluff line to allow for the erosion
that is expected to occur. Fortunately, the Minnesota Lake Superior
shoreline has had relatively little development in comparison to other
Great Lakes shorelines, so good planning can prevent future problems.
Measuring shoreline recession from a time sequence of maps or aerial
photos provides long-term erosion rates. Shoreling geology also provides
an indication of erosion hazard. This study combined the two to produce
maps of long-term shoreline erosion potential. Abstract: Too often privately constructed shoreline protection structures fail prematurely. Frequently this occurs because of inadequate design and construction, lack of neighborhood coordination and the nature of the physical environment. Innovative methods for financing shoreline erosion control measures have taken place in several Ohio shoreline communities. This fact sheet covers some of the cost of implementing vs. not implementing projects and of how to go about funding a group erosion abatement project. Notes:
5032 czmt no charge. Innovative financing for erosion control Abstract: The two primary shore erosion processes at work along Ohio's Lake Erie are wave erosion and mass wasting. Although wave erosion is the more significant, rates are highly variable. For example, erosion rates in Lake County vary from less than one foot to nine feet per year, depending on a variety of factors including the weather and physical setting of the shore. Weather can also influence the size and frequency of waves striking the shoreline. The physical setting of the shore--shore orientation, presence or absence of a beach or man-made structures--and shore geology also contribute to erosion variability. This fact sheet describes wave erosion and mass wasting. Notes: 0439 educ no charge. Wave erosion and mass wasting back
to top Abstract: Private shoreline property owners experience a high rate of failure in their efforts to abate shoreline erosion along the Great Lakes. The U.S. Army Corps of Engineers provides basic construction and maintenance guidelines for shoreline protection structures in a free pamphlet entitled "Help Yourself." These guidelines are reproduced in this fact sheet in an effort to help shoreline property owners avoid common errors in the construction and design of structures for shoreline erosion abatement. Notes:
1438 tour no charge for single copies. Tips for shoreline protectionconstruction Abstract: If you are considering any work, such as construction, dredging or filling, that will involve the public waters of Ohio or the navigable waters of the United States, you must have the proper permits. The U.S. Army Corps of Engineers requires a permit for any work or structure along the shoreline of Lake Erie including adjacent wetlands. Ohio law requires a permit from the Ohio Department of Natural Resources and a water quality certificate from the Ohio Environmental Protection Agency. This fact sheet tells where and how to obtain permits and more information. Notes:
1439 tour no charge for single copies. Shoreline development permits Abstract: Almost everyone recognizes the value of a beach for recreational purposes. But how many people know that a beach is one of the best natural shore protection features a shoreline property owner can have? Beaches are, in fact, part of the first line of defense against excessive shore erosion. This fact sheet briefly explores the nature of beaches and why they help reduce erosion along the coastline. Notes:
1441 educ no charge for single copies. Beaches protect shores Abstract: Many lake shore homeowners need information on coastal erosion and the potential benefits of protecting their property from erosion. Real estate professionals and others need information on how erosion and erosion protection devices affect coastal property values. This fact sheet, the results of Ohio Sea Grant research on the role of Lake Erie shoreline erosion in Ohio's housing market, provides information these people can use. Notes: 1442 tour no charge for single copies. Erosion and coastal property values. Many lake shore homeowners need information on coastal erosion and the potential benefits of protecting their property from erosion. Real estate professionals and others need information on how erosion and erosion protection devices affect coastal property values. This fact sheet, the results of Ohio Sea Grant research on the role of Lake Erie shoreline erosion in Ohio's housing market, provides information these people can use. back
to top Abstract:
Private shoreline property owners experience a high rate of failure
in their efforts to abate shoreline erosion along the Great Lakes.
The three primary causes of the high failure rate include (1) the
lack of neighborhood coordination in construction or erosion abatement
projects, (2) inadequate design and construction of privately financed
projects, and (3) the nature of the physical environment. While not
much can be done to change the nature of the physical environment,
citizens can work to improve the cooperative efforts, design, construction,
and financing of erosion control measures. Abstract: In 1976, the U.S. Army Corps of Engineers was charged with conducting an extensive survey of private property owners along the Great Lakes shoreline to assess the extent and nature of damages occurring during the early 1970s and the resultant expenditures. This study utilizes the damage and cost of protection estimates generated by the Corps study for private property in the state of Ohio (public property damages werenot estimated in the Corps' study). Using an input-output model of the northern Ohio regional economy, economic resources within the region that were used for the restoration, replacement, or protection of private property instead of for production of the usual goods and services are estimated. Annual expected cost estimates were then calculated, providing guidelines against which the costs of protective strategies can be compared. Notes:
9818 elps $4.00. Flood, erosion cost estimates Abstract: Shoreline erosion is the gradual disappearane of land into a lake, and property improvements are eventually threatened. The primary research objective here is to estimate the benefits of erosion protection, which would serve as a basis for identifying efficiency gains in alternative courses of action. Erosion protection can be measured as GEOTIME, given as the number of years until the distance between the house and lake is reduced to zero. An asset pricing model, with GEOTIME as a choice variable, indicates that the land price function should be increasing at a decreasing rate. The null hypothesis for GEOTIME is rejected; it can be concluded that purchasers of lakeshore property have a positive willingness to pay for erosion protection. For an average property, the benefit of a protection device that increases GEOTIME from one to twenty-one years was $40,600, while the benefit of an increase from 10 to 30 years was $9,100. A numerical analysis was undertaken of group formation for the cooperative provision of erosion protection among property owners. Considering benefits from a standardized protection device, a marginal cost rule yields more properties protected and greater net benefits than either average cost groups or individual action. Notes:
0390 tour $11.87. Erosion protection and property value back
to top Abstract:
Although much controversy surrounds the relationship between seawalls
and coastal erosion, little scientific evidence exists. To rectify that,
the researchers constructed a miniature beach and compared the erosion
and accretion of an unprotected dune beach with that of a beach protected
by a rubble mound seawall. This publication describes experiments in which
a programmable wavemaker, simulating natural waves and their seasonal
variations, was used to simultaneously pelt the seawall and dune with
identical waves. Beaches around protected and unprotected areas exhibited
similar levels of erosion, suggesting that sea walls may not deserve their
bad reputation. This report will be particularly relevant to coastal zone
managers responsible for regulating coastal structures, as well as those
engineers who design and construct them. Abstract: Increased public awareness about the role of erosion control districts in dealing with shoreline erosion and of the procedures involved in forming such a district is the aim of this publication. While written primarily for the coastal property owner and homeowners' associations, the bulletin contains information useful to local government officials and regulatory agencies involved in coastal development as well. It is hoped this information will promote the community approach to erosion control. Due to the complexity of the erosion process, the property owner seeking advice on specific erosion control measures is urged to consult a qualified marine engineer, contractor, or specialist for more information. Notes: 5014
czmt A community approach to erosion control Abstract: Too frequently, good coastal erosion control engineering and design considerations are poorly understood when shoreline development is being planned and implemented in erosion-prone and erosion hazard areas. This information bulletin is intended to give coastal landowners, developers, and government officials a means to determine when and what erosion control measures might be applicable to specific situations. Information is presented on designing erosion control projects, materials used, and alternatives compatible with categories of land use. It is part of a Shoreline Conservation Series of Information Bulletins and related Fact Sheets. back
to top Abstract: Too frequently, the natural processes behind coastal erosion are poorly understood and are ignored when shoreline development is being planned and implemented in erosion-prone and erosion hazard areas. This bulletin is intended to give coastal landowners, developers, and government officials a better understanding of natural coastal processes that cause shoreline erosion. Natural erosion control features of the coast, such as barrier beaches and dunes, are also discussed. Finally, the impacts of various human activities upon shoreline erosion are examined. The reader will be able to use this information to make better decisions when planning and permitting new development along erosion-prone areas of the state's coast. Notes: 5016
czmt Coastal erosion processes Abstract: Legal issues addressed here are (1) whether the owner of ocean shorefront property who builds an erosion prevention structure is liable for damage to neighboring property resulting from disturbance in the natural wave action at the site; and (2) whether, if the structure has been authorized by a law, regulation, or permit granted by an administrative agency, the owner is immune from liability as a matter of law, or if, in any case, the authorization strengthens the owner's defense. The issues are not unique to Long Island, but are explored with particular reference to erosion control on Long Island shores. Notes: 5066
elps Erosion control rights and responsibilities Abstract:
This publication examines the utility of plantings in erosion control
on two forms of coastlines common to the ocean and Great Lakes: the flat
beach with dunes characteristic of barrier beaches, and landforms characterized
by narrow beaches backed by bluffs of erodible soil. The natural processes
of these landforms are outlined, and specialized horticultural requirements
are given for conservation of existing plants or introduction of new ones.
Includes 73 illustrations, a glossary, about 100 references, and an index
of plants. Abstract: Coastal communities and human-made erosion from so-called control structures have created enormous land use problems. Managers should become more aware of all the coastal processes affecting erosion of their coastal landforms over the years, then study various structures and vegetative alternatives with their effects, and plan a procedure to follow. This bulletin is intended to be of use to public decision makers, community institutions, civic organizations, landscape planners, managers, and contractors, as well as owners of private properties, on the potentials and constraints of using vegetation for reduction of erosion and for other purposes on the coastlines of New York State. It has implications and value for similar areas elsewhere in the Northeast. Notes: & Technology Pakr, Ithaca, New York 14850. back
to top Abstract:
Coastal erosion and sea-level rise in response to greenhouse warming have
the potential to affect the majority of the population, as well as the
economy and use of natural resources in Rhode Island. Higher sea levels
could cause greater shoreline retreat, increase coastal erosion, property
destruction, and underground water resources. This fact sheet discusses
identification and protection of vulnerable coastal properties. Abstract:
Using repeated severe storm damage examples from a small stretch of coastal
road in Massachusetts, this advisory bulletin urges coastal planners to
take a fresh look at trouble spots with the idea of seeking out alternative,
long-term solutions rather than merely constantly restoring things to
their pre-storm appearance and function. Abstract: Since 1979, the North Carolina permit process has included a minimum oceanfront-setback requirement for permanent structures to reduce the likelihood and degree of storm and erosion damage. The minimum required setback has been set as thirty times either the historical long-term erosion rate or two feet per year, whichever is larger, measured landward from the seaward line of stable dune vegetation. At least theoretically, a measure of the degree of safety from long-term erosion can be estimated by comparing the actual distance an owner chooses to locate landward of the required setback with the estimated erosion rate. The purpose of this analysis is to describe where permanent structures were located in relation to the setback requirements during 1979-1981. Analysis includes the ocean hazard areas in Long Beach, Caswell Beach, West Onslow Beach, Emerald Isle and Nags Head. Notes: 9118 czmt $1.25. Setback standards and building location back
to top Abstract: Nothing seems able to stop the pulsing tide from sweeping away our shoreline. Scientists had hoped that artificial seaweed, plastic-like strips anchored underwater, could control erosion along the shore. But in U.S. tests, evidence shows this method is not an effective erosion control alternative. In this paper a coastal engineer summarizes the history, theory and documented results of erosion control projects using artificial seaweed. Notes: 4023
czmt $1.00. Artificial seaweed--an erosion control? Abstract: Nothing seems able to stop the pulsing tide from sweeping away our shoreline. Scientists had hoped that artificial seaweed, plastic-like strips anchored underwater, could control erosion along the shore. But in U.S. tests, evidence shows this method is not an effective erosion control alternative. In this paper a coastal engineer summarizes the history, theory and documented results of erosion control projects using artificial seaweed. Notes: 4023
czmt $1.00. Artificial seaweed--an erosion control? Abstract:
Our coast is continually evolving in response to variations in physical
forces and sediment supply. Though many factors are known to influence
beach erosion, it is difficult to determine how and where specific factors,
singly or in combination, will affect a given beach adversely. Although
our limited knowledge in this area indicates a need for further research,
the purpose of this paper is to provide a rational perspective on beach
erosion, a general framework for considering the problem as it applies
to South Carolina, based on some 30 years of studies. The author proposes
a common frame of reference with which to assess the current problem of
beach erosion. back
to top Abstract:
Any shore with a sandy beach is susceptible to beach loss from erosion.
Nearly 25% (17 miles) of Oahu's beaches have been lost or significantly
narrowed over this century. This brochure identifies several facts about
beach erosion and the new Coastal Lands Program at the Department of Land
and Natural Resources. It also provides some information concerning the
difference between coastal erosion and beach erosion. Abstract:
The manual gives step-by-step instructions (with examples) on how to estimate
the conditions of risk to coastal property from extreme water levels,
storm surges, wave runup and erosion. The emphasis is on Great Lakes coastal
property. The manual is written for persons with a professional stake
in prudent coastal development: bankers, contractors, developers, engineers,
insurers, realtors and regulators as well as for prospective property
owners. Appendices include a glossary, sources of information and the
first collection of both Canadian and U.S. storm surge and 100-year flood
elevations for the entire Great Lakes. 124 pages. |
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