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Lake Michigan Coastal Processes: Numerical and Field-Based Approaches to Sediment Transport, Overwash, and Nearshore Ice
Lake Michigan Coastal Processes: Numerical and Field-Based Approaches to Sediment Transport, Overwash, and Nearshore Ice
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105112
- ISBN
- 9798290963006
- DDC
- 551.4
- 서명/저자
- Lake Michigan Coastal Processes: Numerical and Field-Based Approaches to Sediment Transport, Overwash, and Nearshore Ice
- 발행사항
- [Sl] : The University of Wisconsin - Madison, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 134 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
- 주기사항
- Advisor: Zoet, Lucas K.
- 학위논문주기
- Thesis (Ph.D.)--The University of Wisconsin - Madison, 2025.
- 초록/해제
- 요약The Great Lakes coastlines are shaped by the same fundamental hydrodynamic principles as ocean coasts, but their evolution is mediated by geomorphic processes that set them apart. Unlike tidally dominated systems, Great Lakes water levels fluctuate due to short-term meteorological forcing, seasonal variations, and quasi-decadal climate patterns. The fluctuating water levels of the Great Lakes exert a dominant control on coastal morphology. High water levels are associated with shoreline retreat, bluff toe erosion, and sediment while falling water levels tend to be associated with beach recovery. However, it remains unclear how sediment, supplied largely by bluff erosion is incorporated into the nearshore system and how it contributes to long-term coastal evolution. While many studies have investigated the stability of shoreline bluffs, the continuity between onshore and offshore processes has received less attention. Complicating this picture are cold climate processes, particularly freeze-thaw cycling and landfast ice, which are common in the Great Lakes and other high-latitude coasts. Uncertainty in the impacts and feedbacks of these cold climate processes limits our knowledge of coastal evolution in the Great Lakes and on other cold coasts. To address this gap, I use high spatial and temporal resolution field studies to characterize sediment transport and geomorphic processes in cold environments and combine the findings with data-driven numerical modeling to systematically investigate the impacts of changing hydrodynamic, wave conditions, and environmental conditions to the Great Lakes. Chapter 1 investigates the link between onshore erosion and nearshore recovery at two contrasting coastal settings-a dune-backed beach and a bluff-backed beach-through repeated topobathymetric surveys during falling lake levels. Chapter 2 applies a calibrated XBeach hydrodynamic model to a case study of storm-driven overwash and investigates the vulnerability of the site to various water levels and representative storm conditions, identified using Gaussian mixture modeling. Chapter 3 explores the morphodynamic impact of landfast ice on sediment transport using XBeach. By approximating ice as a non-erodible boundary condition, the model simulates hydrodynamic scour and sediment redistribution adjacent to the ice front. Together, this research represents a comprehensive assessment of the continuity between onshore and offshore geomorphic processes on shorelines in the North American Great Lakes. By coupling field observations, laboratory analyses, and numerical modeling, this research advances our understanding of sediment sourcing, transport, and storage under a range of hydrodynamic, climatic, and geomorphic conditions.
- 일반주제명
- Geomorphology
- 일반주제명
- Sedimentary geology
- 일반주제명
- Geology
- 키워드
- Erosion
- 키워드
- Great Lakes
- 키워드
- Morphodynamics
- 키워드
- Xbeach
- 기타저자
- The University of Wisconsin - Madison Geoscience
- 기본자료저록
- Dissertations Abstracts International. 87-02B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260126s2025 us c eng d■001000017359383
■00520260202105112
■006m o d
■007cr#unu||||||||
■020 ▼a9798290963006
■035 ▼a(MiAaPQ)AAI32237070
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a551.4
■1001 ▼aVolpano, Chelsea A.
■24510▼aLake Michigan Coastal Processes: Numerical and Field-Based Approaches to Sediment Transport, Overwash, and Nearshore Ice
■260 ▼a[Sl]▼bThe University of Wisconsin - Madison▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a134 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-02, Section: B.
■500 ▼aAdvisor: Zoet, Lucas K.
■5021 ▼aThesis (Ph.D.)--The University of Wisconsin - Madison, 2025.
■520 ▼aThe Great Lakes coastlines are shaped by the same fundamental hydrodynamic principles as ocean coasts, but their evolution is mediated by geomorphic processes that set them apart. Unlike tidally dominated systems, Great Lakes water levels fluctuate due to short-term meteorological forcing, seasonal variations, and quasi-decadal climate patterns. The fluctuating water levels of the Great Lakes exert a dominant control on coastal morphology. High water levels are associated with shoreline retreat, bluff toe erosion, and sediment while falling water levels tend to be associated with beach recovery. However, it remains unclear how sediment, supplied largely by bluff erosion is incorporated into the nearshore system and how it contributes to long-term coastal evolution. While many studies have investigated the stability of shoreline bluffs, the continuity between onshore and offshore processes has received less attention. Complicating this picture are cold climate processes, particularly freeze-thaw cycling and landfast ice, which are common in the Great Lakes and other high-latitude coasts. Uncertainty in the impacts and feedbacks of these cold climate processes limits our knowledge of coastal evolution in the Great Lakes and on other cold coasts. To address this gap, I use high spatial and temporal resolution field studies to characterize sediment transport and geomorphic processes in cold environments and combine the findings with data-driven numerical modeling to systematically investigate the impacts of changing hydrodynamic, wave conditions, and environmental conditions to the Great Lakes. Chapter 1 investigates the link between onshore erosion and nearshore recovery at two contrasting coastal settings-a dune-backed beach and a bluff-backed beach-through repeated topobathymetric surveys during falling lake levels. Chapter 2 applies a calibrated XBeach hydrodynamic model to a case study of storm-driven overwash and investigates the vulnerability of the site to various water levels and representative storm conditions, identified using Gaussian mixture modeling. Chapter 3 explores the morphodynamic impact of landfast ice on sediment transport using XBeach. By approximating ice as a non-erodible boundary condition, the model simulates hydrodynamic scour and sediment redistribution adjacent to the ice front. Together, this research represents a comprehensive assessment of the continuity between onshore and offshore geomorphic processes on shorelines in the North American Great Lakes. By coupling field observations, laboratory analyses, and numerical modeling, this research advances our understanding of sediment sourcing, transport, and storage under a range of hydrodynamic, climatic, and geomorphic conditions.
■590 ▼aSchool code: 0262.
■650 4▼aGeomorphology
■650 4▼aSedimentary geology
■650 4▼aGeology
■653 ▼aCoastal processes
■653 ▼aErosion
■653 ▼aGreat Lakes
■653 ▼aMorphodynamics
■653 ▼aXbeach
■690 ▼a0484
■690 ▼a0594
■690 ▼a0372
■71020▼aThe University of Wisconsin - Madison▼bGeoscience.
■7730 ▼tDissertations Abstracts International▼g87-02B.
■790 ▼a0262
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359383▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


