Coastal Systems: Waves, Tides, Sediments, Cells
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Responses to Coastal Erosio in Alaska in a Changing Climate
Responses to Coastal Erosio in Alaska in a Changing Climate A Guide for Coastal Residents, Business and Resource Managers, Engineers, and Builders Orson P. Smith Mikal K. Hendee Responses to Coastal Erosio in Alaska in a Changing Climate A Guide for Coastal Residents, Business and Resource Managers, Engineers, and Builders Orson P. Smith Mikal K. Hendee Alaska Sea Grant College Program University of Alaska Fairbanks SG-ED-75 Elmer E. Rasmuson Library Cataloging in Publication Data: Smith, Orson P. Responses to coastal erosion in Alaska in a changing climate : a guide for coastal residents, business and resource managers, engineers, and builders / Orson P. Smith ; Mikal K. Hendee. – Fairbanks, Alaska : Alaska Sea Grant College Program, University of Alaska Fairbanks, 2011. p.: ill., maps ; cm. - (Alaska Sea Grant College Program, University of Alaska Fairbanks ; SG-ED-75) Includes bibliographical references and index. 1. Coast changes—Alaska—Guidebooks. 2. Shore protection—Alaska—Guidebooks. 3. Beach erosion—Alaska—Guidebooks. 4. Coastal engineering—Alaska—Guidebooks. I. Title. II. Hendee, Mikal K. III. Series: Alaska Sea Grant College Program, University of Alaska Fairbanks; SG-ED-75. TC330.S65 2011 ISBN 978-1-56612-165-1 doi:10.4027/rceacc.2011 © Alaska Sea Grant College Program, University of Alaska Fairbanks. All rights reserved. Credits This book, SG-ED-75, is published by the Alaska Sea Grant College Program, supported by the U.S. Department of Commerce, NOAA National Sea Grant Office, grant NA10OAR4170097, projects A/75-02 and A/161-02; and by the University of Alaska Fairbanks with state funds. Sea Grant is a unique partnership with public and private sectors combining research, education, and technology transfer for the public. -
Littoral Cells, Sand Budgets, and Beaches: Understanding California S
LITTORAL CELLS, SAND BUDGETS, AND BEACHES: UNDERSTANDING CALIFORNIA’ S SHORELINE KIKI PATSCH GARY GRIGGS OCTOBER 2006 INSTITUTE OF MARINE SCIENCES UNIVERSITY OF CALIFORNIA, SANTA CRUZ CALIFORNIA DEPARTMENT OF BOATING AND WATERWAYS CALIFORNIA COASTAL SEDIMENT MANAGEMENT WORKGROUP Littoral Cells, Sand Budgets, and Beaches: Understanding California’s Shoreline By Kiki Patch Gary Griggs Institute of Marine Sciences University of California, Santa Cruz California Department of Boating and Waterways California Coastal Sediment Management WorkGroup October 2006 Cover Image: Santa Barbara Harbor © 2002 Kenneth & Gabrielle Adelman, California Coastal Records Project www.californiacoastline.org Brochure Design & Layout Laura Beach www.LauraBeach.net Littoral Cells, Sand Budgets, and Beaches: Understanding California’s Shoreline Kiki Patsch Gary Griggs Institute of Marine Sciences University of California, Santa Cruz TABLE OF CONTENTS Executive Summary 7 Chapter 1: Introduction 9 Chapter 2: An Overview of Littoral Cells and Littoral Drift 11 Chapter 3: Elements Involved in Developing Sand Budgets for Littoral Cells 17 Chapter 4: Sand Budgets for California’s Major Littoral Cells and Changes in Sand Supply 23 Chapter 5: Discussion of Beach Nourishment in California 27 Chapter 6: Conclusions 33 References Cited and Other Useful References 35 EXECUTIVE SUMMARY he coastline of California can be divided into a set of dis- Beach nourishment or beach restoration is the placement of Ttinct, essentially self-contained littoral cells or beach com- sand on the shoreline with the intent of widening a beach that partments. These compartments are geographically limited and is naturally narrow or where the natural supply of sand has consist of a series of sand sources (such as rivers, streams and been signifi cantly reduced through human activities. -
Cover and Final Landform Design for the B-Zone Waste Rock Pile at Rabbit Lake Mine
Cover and final landform design for the B-zone waste rock pile at Rabbit Lake Mine Brian Ayres1, Pat Landine2, Les Adrian2, Dave Christensen1, Mike O’Kane1 1O’Kane Consultants Inc., Saskatoon, Saskatchewan, Canada 2Cameco Corporation, Saskatoon, Saskatchewan, Canada Abstract. A detailed study was undertaken to evaluate various cover system and final landform designs for the B-zone waste rock pile at Rabbit Lake Mine in Can- ada. Several tasks were completed including physical and hydraulic characteriza- tion of the waste and potential cover materials and numerical modelling to exam- ine erosion and slope stability. Soil-atmosphere numeric simulations were conducted to predict net infiltration and oxygen ingress rates through several cover system alternatives. A seepage numerical modelling programme was com- pleted to predict current and future seepage rates from the base of the pile for al- ternate cover system designs. Several final landform alternatives were developed for the pile along with a preliminary design for a surface water management sys- tem. The potential impact of various physical, chemical, and biological processes on the sustainable performance of the final landform was also considered. This paper provides an overview of the investigations completed towards the develop- ment of a cover system and final landform design for the B-zone waste rock pile. Introduction Rabbit Lake Mine, owned and operated by Cameco Corporation, began operation in 1975, and is the longest operating uranium production facility in Saskatchewan, Canada. The operation is located 700 km north of Saskatoon (Fig. 1). Historic and current operations at this site include four open pits, one underground mine, sev- eral mine waste storage facilities, and a mill. -
Why Did the Southern Gulf of California Rupture So Rapidly?—Oblique Divergence Across Hot, Weak Lithosphere Along a Tectonically Active Margin
Why did the Southern Gulf of California rupture so rapidly?—Oblique divergence across hot, weak lithosphere along a tectonically active margin breakup, is mainly dependent on the thermal structure, crust- Paul J. Umhoefer, Geology Program, School of Earth Sciences & Environmental Sustainability, Northern Arizona University, al thickness, and crustal strength of the lithosphere when Flagstaff, Arizona 86011, USA; [email protected] rifting begins (e.g., Buck, 2007), as well as forces at the base of the lithosphere and far-field plate interactions (Ziegler and Cloetingh, 2004). ABSTRACT Continental rupture at its two extremes creates either large Rifts in the interior of continents that evolve to form large ocean basins or small and narrow marginal seas depending oceans typically last for 30 to 80 m.y. and longer before com- largely on the tectonic setting of the rift. Rupture of a conti- plete rupture of the continent and onset of sea-floor spreading. nent that creates large oceans most commonly initiates as A distinct style of rifts form along the active tectonic margins of rifts in old, cold continental lithosphere or within former continents, and these rifts more commonly form marginal seas large collisional belts in the interior of large continents, part and terranes or continental blocks or slivers that are ruptured of the process known as the Wilson Cycle (Wilson, 1966). away from their home continent. The Gulf of California and the Rupture to create narrow marginal seas commonly occurs in Baja California microplate make up one of the best examples active continental margins and results in the formation of of the latter setting and processes. -
The Gulf of Mexico Workshop on International Research, March 29–30, 2017, Houston, Texas
OCS Study BOEM 2019-045 Proceedings: The Gulf of Mexico Workshop on International Research, March 29–30, 2017, Houston, Texas U.S. Department of the Interior Bureau of Ocean Energy Management Gulf of Mexico OCS Region OCS Study BOEM 2019-045 Proceedings: The Gulf of Mexico Workshop on International Research, March 29–30, 2017, Houston, Texas Editors Larry McKinney, Mark Besonen, Kim Withers Prepared under BOEM Contract M16AC00026 by Harte Research Institute for Gulf of Mexico Studies Texas A&M University–Corpus Christi 6300 Ocean Drive Corpus Christi, TX 78412 Published by U.S. Department of the Interior New Orleans, LA Bureau of Ocean Energy Management July 2019 Gulf of Mexico OCS Region DISCLAIMER Study collaboration and funding were provided by the US Department of the Interior, Bureau of Ocean Energy Management (BOEM), Environmental Studies Program, Washington, DC, under Agreement Number M16AC00026. This report has been technically reviewed by BOEM, and it has been approved for publication. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the US Government, nor does mention of trade names or commercial products constitute endorsement or recommendation for use. REPORT AVAILABILITY To download a PDF file of this report, go to the US Department of the Interior, Bureau of Ocean Energy Management website at https://www.boem.gov/Environmental-Studies-EnvData/, click on the link for the Environmental Studies Program Information System (ESPIS), and search on 2019-045. CITATION McKinney LD, Besonen M, Withers K (editors) (Harte Research Institute for Gulf of Mexico Studies, Corpus Christi, Texas). -
Feasibility Study of an Artifical Sandy Beach at Batumi, Georgia
FEASIBILITY STUDY OF AN ARTIFICAL SANDY BEACH AT BATUMI, GEORGIA ARCADIS/TU DELFT : MSc Report FEASIBILITY STUDY OF AN ARTIFICAL SANDY BEACH AT BATUMI, GEORGIA Date May 2012 Graduate C. Pepping Educational Institution Delft University of Technology, Faculty Civil Engineering & Geosciences Section Hydraulic Engineering, Chair of Coastal Engineering MSc Thesis committee Prof. dr. ir. M.J.F. Stive Delft University of Technology Dr. ir. M. Zijlema Delft University of Technology Ir. J. van Overeem Delft University of Technology Ir. M.C. Onderwater ARCADIS Nederland BV Company ARCADIS Nederland BV, Division Water PREFACE Preface This Master thesis is the final part of the Master program Hydraulic Engineering of the chair Coastal Engineering at the faculty Civil Engineering & Geosciences of the Delft University of Technology. This research is done in cooperation with ARCADIS Nederland BV. The report represents the work done from July 2011 until May 2012. I would like to thank Jan van Overeem and Martijn Onderwater for the opportunity to perform this research at ARCADIS and the opportunity to graduate on such an interesting subject with many different aspects. I would also like to thank Robbin van Santen for all his help and assistance for the XBeach model. Furthermore I owe a special thanks to my graduation committee for the valuable input and feedback: Prof. dr. ir. M.J.F. Stive (Delft University of Technology) for his support and interest in my graduation work; Dr. ir. M. Zijlema (Delft University of Technology) for his support and reviewing the report; ir. J. van Overeem (Delft University of Technology ) for his supervisions, useful feedback and help, support and for reviewing the report; and ir. -
Recent Sediments of the Monterey Deep-Sea Fan
UC Berkeley Hydraulic Engineering Laboratory Reports Title Recent Sediments of the Monterey Deep-Sea Fan Permalink https://escholarship.org/uc/item/5f440431 Author Wilde, Pat Publication Date 1965-05-01 Peer reviewed eScholarship.org Powered by the California Digital Library University of California RECENT SEDIMENTS OF THE MONTEREY DEEP-SEA FAN A thesis presented by Pat Wilde to The Department of Geological Sciences in partial fulfillment of the requirements for the degree of Doc tor of Philosophy in the subject of Geology Harvard Univer sity Cambridge, Massachusetts May 1965 Copyright reserved by the author University of California Hydraulic Engineering Laboratory Submitted under Contract DA- 49- 055-CIV-ENG- 63-4 with the Coastal Engineering Research Center, U. S. Army Technical Report No. HEL-2-13 RECENT SEDIMENTS OF THE MONTEREY DEEP-SEA FAN by Pat Wilde Berkeley, California May, 1965 CONTENTS Page Abstract ................... 1 Introduction ...................... 5 Definition ..................... 5 Location ..................... 5 Regional Setting .............. 8 Subjects of Investigation ............... 9 Sources of Data .................. 10 Acknowledgements ................ 10 Geomorphology ..................11 Major Features ..............'11 FanSlope ................... 11 Under sea Positive Relief ............15 Submarine Canyon-Channel Systems . 16 Hydraulic Geometry ................ 19 Calculations ............... 19 Comparison with other Channel Systems ..30 Lithology ........................32 Sampling Techniques ............... -
Measuring Currents in Submarine Canyons: Technological and Scientifi C Progress in the Past 30 Years
Exploring the Deep Sea and Beyond themed issue Measuring currents in submarine canyons: Technological and scientifi c progress in the past 30 years J.P. Xu U.S. Geological Survey, 345 Middlefi eld Road, MS-999, Menlo Park, California 94025, USA ABSTRACT 1. INTRODUCTION processes, and summarize and discuss several future research challenges constructed primar- The development and application of The publication of the American Association ily for submarine canyons in temperate climate, acoustic and optical technologies and of of Petroleum Geologists Studies in Geology 8: such as the California coast. accurate positioning systems in the past Currents in Submarine Canyons and Other Sea 30 years have opened new frontiers in the Valleys (Shepard et al., 1979) marked a signifi - 2. TECHNOLOGICAL ADVANCES submarine canyon research communities. cant milestone in submarine canyon research. IN CURRENT OBSERVATION IN This paper reviews several key advance- Although there had been studies on the topics of SUBMARINE CANYONS ments in both technology and science in the submarine canyon hydrodynamics and sediment fi eld of currents in submarine canyons since processes in various journals since the 1930s 2.1. Instrumentation the1979 publication of Currents in Subma- (Shepard et al., 1939; Emory and Hulsemann, rine Canyons and Other Sea Valleys by Fran- 1963; Ryan and Heezen 1965; Inman, 1970; Instrument development has come a long way cis Shepard and colleagues. Precise place- Drake and Gorsline, 1973; Shepard, 1975), this in the past 30 yr. The greatest leap in the tech- ments of high-resolution, high-frequency book was the fi rst of its kind to provide descrip- nology of fl ow measurements was the transition instruments have not only allowed research- tion and discussion on the various phenomena from mechanical to acoustic current meters. -
Dynamics of Beach Sand Made Easy
Dynamics of Beaches Made Easy Page 1 Dynamics Of Beaches Made Easy San Diego County Chapter of the Surfrider Foundation 1. Introduction Beaches are made up of more than just sand. In California beaches are generally formed by erosion of uplifted plates resulting in cliff backed beaches or in the delta areas of rivers or watersheds. Beach sand is an important element of beaches but not the only element. Wavecut platforms or tidal terraces are equally important in many areas of San Diego. The movement of beach sand is governed by many complex processes and variables. However, there are a few very basic elements that tend to control not only how much sand ends up on our beaches, but also how much sand exists near enough to the shore to be deposited on the beach under favorable conditions. The following is a brief description of the most important issues influencing the current condition of our local beaches with respect to sand. Dynamics of Beaches Made Easy Page 2 2. Geology The geology of San Diego County varies from sea cliffs to sandy beaches. Beaches are generally found at the mouths of lagoons or in the lagoon or river outfalls. Cliffs formed by tectonic activity and the erosion via marine forces deserve special mention. Much of San Diego’s coastline consists of a wavecut platform sometimes referred to as a tidal terrace. A wavecut platform is formed where a seacliff is eroded by marine action, meaning waves, resulting in the deposition of cliff material and formation of a bedrock area where erosion occurred. -
Late Cambrian Hard Substrate Communities from Montana/ Wyoming: the Oldest Known Hardground Encrusters
Late Cambrian hard substrate communities from Montana/ Wyoming: the oldest known hardground encrusters CARLTON E. BREIT, W. DAVID LIDDELL AND KRAIG L. DERSTLER Brett. Carlton E., Liddell, W. David & Derstler, Kraig L. 1983 10 IS: Late Cambrian hard substrate I JETHAIA communities from MontandWyoming: the oldest known hardground encrustcrs. Lethaia, Vol. 16, pp. 281-289. Oslo. ISSN 0024-1164. Hardground surfaces from the Late Cambrian Snowy Range Formation in MontanalWyoming are the oldest known non-reefal hard substrates exhibiting encrusting fossils. These surfaces range in age from Early Franconian to early Trempealeauan. Hardgrounds were developed on slightly hummocky to planar, truncated surfaces of glauconite-rich, carbonate, flat pebble conglomerates, which were deposited during episodes of storm scouring in shallow subtidal environments of the Montana/Wyoming shelf. Snowy Range hardgrounds are encrusted by a low diversity assemblage of fossils dominated by simple discoidal holdfasts of pelmatozoans, probably crinoids, and including small conical spongiomorph algae? and probable stromatolites. Macroborings (e.g. Trypanites) are notably absent from all hardground surfaces, although sharp-walled, vertical, cylindrical holes (borings?) occur in micrite clasts imbedded in certain flat pebble conglomerates. No evidence of faunal succession or microecologic partitioning of irregular surfaces was observed on these Cambrian hardgrounds. 0 Hardgrounds, epibionts, macrobor- ings, pelmatozoan echinoderms, paleoecology, Cambrian, MontanaiWyoming. Cariton E. Brett, Department of Geological Sciences, The University of Rochesrer, Rochester. New York 14627; W. David Liddell, Department of Geology, Utah Stare University, Logan, Utah 84322; Kraig L. Derstler, Department of Geology, University of New Orleans, New Orleans, Louisiana 70122; 9th September, 1982. Hardgrounds afford a unique opportunity for pa- morph algae? and pelmatozoan echinoderm leoecological studies. -
Coastal Erosion
Guidance for Flood Risk Analysis and Mapping Coastal Erosion February 2018 Requirements for the Federal Emergency Management Agency (FEMA) Risk Mapping, Assessment, and Planning (Risk MAP) Program are specified separately by statute, regulation, or FEMA policy (primarily the Standards for Flood Risk Analysis and Mapping). This document provides guidance to support the requirements and recommends approaches for effective and efficient implementation. Alternate approaches that comply with all requirements are acceptable. For more information, please visit the FEMA Guidelines and Standards for Flood Risk Analysis and Mapping webpage (www.fema.gov/guidelines-and-standards-flood-risk-analysis-and- mapping). Copies of the Standards for Flood Risk Analysis and Mapping policy, related guidance, technical references, and other information about the guidelines and standards development process are all available here. You can also search directly by document title at www.fema.gov/library. Coastal Erosion February 2018 Guidance Document 40 Page i Document History Affected Section or Date Description Subsection Sections 2.1.1.1 and February Replaced Figures 2.1.1-1, 2.1.1-2, and 2.1.1-3 to contain 2.1.1.2 2018 correct reference to water level above which Primary Frontal Dune reservoir volume is determined. Coastal Erosion February 2018 Guidance Document 40 Page ii Table of Contents 1.0 Overview ............................................................................................................................ 1 1.1 Beach and Shoreline Settings ........................................................................................ 2 1.1.1 Sandy Beach Backed by High Sand Dune: ............................................................. 3 1.1.2 Sandy Beach Backed by Low Sand Dune Berm: .................................................... 4 1.1.3 Sandy Beach Backed by Shore Protection Structure: ............................................. 4 1.1.4 Mixed Grain Size Beach ......................................................................................... -
Sediment Exchanges Along the Coastal Margin of the Moray Firth, Eastern Scotland
Journal ofthe Geological Society, London, Vol. 144, 1987, pp. 179-185, 8 figs., 2 tables. Printed in Northern Ireland Sediment exchanges along the coastal margin of the Moray Firth, Eastern Scotland G. REID' & J. McMANUS Department of Geology, The University, Dundee, Scotland 1 Present address: Department of Oceanography, University College of North Wales, Menai Bridge, Gwynedd LL.59 5EY, UK Abstrart: The Moray Firthis the largest of only three major coastal embayments on the East Coastof Scotland. The relationships between the offshore, coastal margin and fluvial sediments are examined in terms of processes and deposits. These suggest that the large post-glacial accretions of sediment infilling the inner firths are in part attributable to transport of material from the offshore zone. Since the fluvial input to the area appears tobe relatively small and much is retained on estuarine tidal flats it is likely that the offshore contribution is the most important constituent of the deposits of the coastal margin. The other major source is glacial and fluvioglacial material now being reworked by marine activity. Basis of Moray Firth study post-glacial sediments in such areas mayexceed 80 m in Incontrast tothe strongly dissected WestCoast, major thickness. Inthe outer MorayFirth seismicevidence coastal indentations along the East Coast of Scotland are suggests thinner post-and late-glacial accumulations locally limited to the three major embayments of the Forth, the withpatchy distributions resting upona moraine strewn Tay and the largerMoray Firth. Since the rocky stretches of surface (Chesher & Lawson 1983). coastline are sedimentologically relatively inactive,an understanding of the sedimentaryregimes of themajor inlets provides a key to understanding sediment exchanges Hydrographic regime across most of the coast of Eastern Scotland.