No Cover Image

Book chapter 1074 views

The Impact of Marine Renewable Energy Extraction on Sediment Dynamics

Simon P. Neill, Peter E. Robins, Iain Fairley

Marine Renewable Energy, Pages: 279 - 304

Swansea University Author: Iain Fairley

Full text not available from this repository: check for access using links below.

DOI (Published version): 10.1007/978-3-319-53536-4_12

Abstract

The extraction of marine energy, through either tidal or wave array operation, will clearly influence the hydrodynamics of a region. Although the influence on tidal currents and wave properties is likely to be very small for most extraction scenarios, the influence on bed shear stress is likely to b...

Full description

Published in: Marine Renewable Energy
ISBN: 978-3-319-53534-0 978-3-319-53536-4
Published: Springer
URI: https://cronfa.swan.ac.uk/Record/cronfa36829
Tags: Add Tag
No Tags, Be the first to tag this record!
first_indexed 2017-11-20T14:26:05Z
last_indexed 2019-07-18T21:04:26Z
id cronfa36829
recordtype SURis
fullrecord <?xml version="1.0"?><rfc1807><datestamp>2019-07-18T15:15:10.9537749</datestamp><bib-version>v2</bib-version><id>36829</id><entry>2017-11-20</entry><title>The Impact of Marine Renewable Energy Extraction on Sediment Dynamics</title><swanseaauthors><author><sid>568e6f260489dc8139afe77757553513</sid><firstname>Iain</firstname><surname>Fairley</surname><name>Iain Fairley</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2017-11-20</date><deptcode>FGSEN</deptcode><abstract>The extraction of marine energy, through either tidal or wave array operation, will clearly influence the hydrodynamics of a region. Although the influence on tidal currents and wave properties is likely to be very small for most extraction scenarios, the influence on bed shear stress is likely to be greater, because bed shear stress is quadratically related to tidal currents and wave orbital velocities. Further, the transport of sediments is a function of tidal current and wave orbital velocity cubed. Therefore, even small modifications to the flow field through tidal or wave array operation could lead to significant impacts on regional sediment dynamics. In this chapter, after providing an introduction to sediment dynamics in the marine environment, we explore the impact of tidal energy devices/arrays on regional sediment dynamics, with a particular emphasis on offshore sand banks&#x2014;important sedimentary systems that protect our coastlines from the full impact of storm waves. Next, we discuss how generating electricity from waves could influence nearshore sediment processes, such as beach erosion or replenishment, over a range of timescales. To assess the magnitude of impacts on sedimentary systems, it is essential to consider the scale of the impact in relation to the range of natural variability. We suggest ways in which impacts can be assessed using numerical models, tuned by in situ measurements, that quantify variability over a range of timescales from individual storm events and lunar cycles to seasonal and interannual periods. We also discuss the sedimentary processes associated with tidal lagoons, such as scour and sediment drift outside a lagoon and sediment accretion inside a lagoon.</abstract><type>Book chapter</type><journal>Marine Renewable Energy</journal><paginationStart>279</paginationStart><paginationEnd>304</paginationEnd><publisher>Springer</publisher><isbnPrint>978-3-319-53534-0</isbnPrint><isbnElectronic>978-3-319-53536-4</isbnElectronic><keywords>Marine energy, Sediments, Sediment transport, Tidal energy, Wave energy, Lagoons, Tidal turbine, Morphodynamics, Bed shear stress, Sand banks, Beaches, Beach response, Monitoring</keywords><publishedDay>0</publishedDay><publishedMonth>0</publishedMonth><publishedYear>0</publishedYear><publishedDate>0001-01-01</publishedDate><doi>10.1007/978-3-319-53536-4_12</doi><url/><notes/><college>COLLEGE NANME</college><department>Science and Engineering - Faculty</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>FGSEN</DepartmentCode><institution>Swansea University</institution><apcterm/><lastEdited>2019-07-18T15:15:10.9537749</lastEdited><Created>2017-11-20T10:04:28.1217429</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Engineering and Applied Sciences - Uncategorised</level></path><authors><author><firstname>Simon P.</firstname><surname>Neill</surname><order>1</order></author><author><firstname>Peter E.</firstname><surname>Robins</surname><order>2</order></author><author><firstname>Iain</firstname><surname>Fairley</surname><order>3</order></author></authors><documents/><OutputDurs/></rfc1807>
spelling 2019-07-18T15:15:10.9537749 v2 36829 2017-11-20 The Impact of Marine Renewable Energy Extraction on Sediment Dynamics 568e6f260489dc8139afe77757553513 Iain Fairley Iain Fairley true false 2017-11-20 FGSEN The extraction of marine energy, through either tidal or wave array operation, will clearly influence the hydrodynamics of a region. Although the influence on tidal currents and wave properties is likely to be very small for most extraction scenarios, the influence on bed shear stress is likely to be greater, because bed shear stress is quadratically related to tidal currents and wave orbital velocities. Further, the transport of sediments is a function of tidal current and wave orbital velocity cubed. Therefore, even small modifications to the flow field through tidal or wave array operation could lead to significant impacts on regional sediment dynamics. In this chapter, after providing an introduction to sediment dynamics in the marine environment, we explore the impact of tidal energy devices/arrays on regional sediment dynamics, with a particular emphasis on offshore sand banks—important sedimentary systems that protect our coastlines from the full impact of storm waves. Next, we discuss how generating electricity from waves could influence nearshore sediment processes, such as beach erosion or replenishment, over a range of timescales. To assess the magnitude of impacts on sedimentary systems, it is essential to consider the scale of the impact in relation to the range of natural variability. We suggest ways in which impacts can be assessed using numerical models, tuned by in situ measurements, that quantify variability over a range of timescales from individual storm events and lunar cycles to seasonal and interannual periods. We also discuss the sedimentary processes associated with tidal lagoons, such as scour and sediment drift outside a lagoon and sediment accretion inside a lagoon. Book chapter Marine Renewable Energy 279 304 Springer 978-3-319-53534-0 978-3-319-53536-4 Marine energy, Sediments, Sediment transport, Tidal energy, Wave energy, Lagoons, Tidal turbine, Morphodynamics, Bed shear stress, Sand banks, Beaches, Beach response, Monitoring 0 0 0 0001-01-01 10.1007/978-3-319-53536-4_12 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2019-07-18T15:15:10.9537749 2017-11-20T10:04:28.1217429 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Simon P. Neill 1 Peter E. Robins 2 Iain Fairley 3
title The Impact of Marine Renewable Energy Extraction on Sediment Dynamics
spellingShingle The Impact of Marine Renewable Energy Extraction on Sediment Dynamics
Iain Fairley
title_short The Impact of Marine Renewable Energy Extraction on Sediment Dynamics
title_full The Impact of Marine Renewable Energy Extraction on Sediment Dynamics
title_fullStr The Impact of Marine Renewable Energy Extraction on Sediment Dynamics
title_full_unstemmed The Impact of Marine Renewable Energy Extraction on Sediment Dynamics
title_sort The Impact of Marine Renewable Energy Extraction on Sediment Dynamics
author_id_str_mv 568e6f260489dc8139afe77757553513
author_id_fullname_str_mv 568e6f260489dc8139afe77757553513_***_Iain Fairley
author Iain Fairley
author2 Simon P. Neill
Peter E. Robins
Iain Fairley
format Book chapter
container_title Marine Renewable Energy
container_start_page 279
institution Swansea University
isbn 978-3-319-53534-0
978-3-319-53536-4
doi_str_mv 10.1007/978-3-319-53536-4_12
publisher Springer
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 0
active_str 0
description The extraction of marine energy, through either tidal or wave array operation, will clearly influence the hydrodynamics of a region. Although the influence on tidal currents and wave properties is likely to be very small for most extraction scenarios, the influence on bed shear stress is likely to be greater, because bed shear stress is quadratically related to tidal currents and wave orbital velocities. Further, the transport of sediments is a function of tidal current and wave orbital velocity cubed. Therefore, even small modifications to the flow field through tidal or wave array operation could lead to significant impacts on regional sediment dynamics. In this chapter, after providing an introduction to sediment dynamics in the marine environment, we explore the impact of tidal energy devices/arrays on regional sediment dynamics, with a particular emphasis on offshore sand banks—important sedimentary systems that protect our coastlines from the full impact of storm waves. Next, we discuss how generating electricity from waves could influence nearshore sediment processes, such as beach erosion or replenishment, over a range of timescales. To assess the magnitude of impacts on sedimentary systems, it is essential to consider the scale of the impact in relation to the range of natural variability. We suggest ways in which impacts can be assessed using numerical models, tuned by in situ measurements, that quantify variability over a range of timescales from individual storm events and lunar cycles to seasonal and interannual periods. We also discuss the sedimentary processes associated with tidal lagoons, such as scour and sediment drift outside a lagoon and sediment accretion inside a lagoon.
published_date 0001-01-01T03:46:11Z
_version_ 1763752197918556160
score 11.013731

Similar Items