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The Effects of Sea Level Rise and Extreme Precipitation on Emerging Groundwater and Contaminant Migration
The Effects of Sea Level Rise and Extreme Precipitation on Emerging Groundwater and Contaminant Migration
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103609
- ISBN
- 9798288885259
- DDC
- 551
- 서명/저자
- The Effects of Sea Level Rise and Extreme Precipitation on Emerging Groundwater and Contaminant Migration
- 발행사항
- [Sl] : University of California, Santa Cruz, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 156 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-01, Section: B.
- 주기사항
- Advisor: Paytan, Adina.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Santa Cruz, 2025.
- 초록/해제
- 요약Climate change is reshaping coastal hydrology, with sea level rise (SLR) and more frequent extreme weather events intensifying the risk of flooding and shallow groundwater emergence in urbanized lowland regions. In the San Francisco Bay Area, these changes threaten to mobilize subsurface contaminants, many of which remain in place from historic industrial activity, posing renewed risks to environmental health and safety. As aging infrastructure with associated trenches are increasingly exposed to rising groundwater and intensifying storm surges, accurately predicting surface flooding, emerging groundwater, subsurface water dynamics and contaminant transport becomes critical. This dissertation addresses this challenge through an integrated, three-part analysis of hydrologic response, geochemical indicators, and site vulnerability assessment tools tailored to coastal conditions.The San Francisco Bay Area faces mounting risks from sea level rise, a consequence of climate change that threatens to exacerbate both coastal flooding and the emergence of shallow groundwater. These hydrologic shifts can mobilize legacy contaminants buried in coastal sediments and artificial fill, heightening the potential for human exposure, particularly to volatile organic compounds that pose vapor intrusion and groundwater contamination risks. This dissertation presents an integrated, three-part investigation into the physical and geochemical processes driving groundwater emergence and contaminant mobilization under sea level rise and extreme climate events, with a focus on practical tools for risk assessment and site prioritization.In Chapter Two, field monitoring across 16 wells in three representative low-lying communities, Manzanita, Tamalpais Valley, and Atchison Village over Water Year 2023 was used to quantify the response of groundwater levels to highest astronomical tides and atmospheric river events. Results show that sewer trenches and preferential flow paths amplify groundwater rise, particularly in artificial fill and near the coast, underscoring the critical role of subsurface infrastructure in flood dynamics.Chapter Three explores the geochemical signatures of groundwater, surface water, and emerging water sources using stable isotopes (δ¹⁸O, δ²H), major ions, and geochemical ratios. These data were used to distinguish between rainwater, tap water, saltwater, and true groundwater discharge. Mixing models and ternary diagrams showed distinct chemical profiles for water samples influenced by subsurface mobilization processes versus those from surface flooding from marine overtopping or rainwater ponding, enabling a more accurate identification of emerging groundwater.Building on these physical and chemical insights, Chapter Four introduces a rapid, cost-effective, multi-tiered indexing framework to prioritize contaminated sites vulnerable to climate-driven hydrologic change. The core of the framework is a modified DRASTIC index, which assesses hydrogeologic vulnerability. To capture additional risk factors, three supplemental indices were developed: the Site Characteristics Index, Contaminant Characteristics Index, and Inundation Vulnerability Index. These Supplementary Indices integrate site specific data on geologic permeability, contaminant mobility, and flood susceptibility. Fourteen sites with volatile organic compound contamination- specifically chlorinated solvents such as trichloroethylene and tetrachloroethylene, and shallow groundwater were evaluated as sea level rise and groundwater rise vulnerability, with index scores standardized using z-score transformation. Bivariate correlations and composite rankings, based on both predefined and data-driven weights, identified sites at highest risk. A strong correlation between the two weighting approaches confirms the strength of the method.Collectively, the findings of the research demonstrate that groundwater emergence and contaminant transport are intensifying hazards in coastal settings affected by sea level rise. The integrated framework developed in this study provides a scalable, evidence-based tool for prioritizing investigation and mitigation at contaminated sites, supporting proactive climate adaptation and public health protection strategies in vulnerable urban areas.Together, these chapters provide a unified framework for diagnosing, interpreting, and prioritizing groundwater-related risks in coastal contaminated sites. By combining field-based hydrologic monitoring, geochemical source tracing, and index-based site ranking, this study offers a replicable approach for identifying areas most susceptible to contaminant mobilization under future sea level and climate scenarios. The findings underscore the importance of incorporating subsurface processes into regional adaptation planning and provide a science-based foundation for directing limited resources toward the most at-risk locations. As sea level rise accelerates, these methods offer timely insights to guide sustainable land use, infrastructure resilience, and flood mitigation in vulnerable coastal communities.
- 일반주제명
- Hydrologic sciences
- 일반주제명
- Sedimentary geology
- 일반주제명
- Environmental geology
- 일반주제명
- Hydraulic engineering
- 일반주제명
- Geology
- 키워드
- Sea level rise
- 기타저자
- University of California, Santa Cruz Earth Science
- 기본자료저록
- Dissertations Abstracts International. 87-01B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798288885259
■035 ▼a(MiAaPQ)AAI32043038
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a551
■1001 ▼aJacobs, James Alan.▼0(orcid)0000-0001-7333-0164
■24510▼aThe Effects of Sea Level Rise and Extreme Precipitation on Emerging Groundwater and Contaminant Migration
■260 ▼a[Sl]▼bUniversity of California, Santa Cruz▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a156 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-01, Section: B.
■500 ▼aAdvisor: Paytan, Adina.
■5021 ▼aThesis (Ph.D.)--University of California, Santa Cruz, 2025.
■520 ▼aClimate change is reshaping coastal hydrology, with sea level rise (SLR) and more frequent extreme weather events intensifying the risk of flooding and shallow groundwater emergence in urbanized lowland regions. In the San Francisco Bay Area, these changes threaten to mobilize subsurface contaminants, many of which remain in place from historic industrial activity, posing renewed risks to environmental health and safety. As aging infrastructure with associated trenches are increasingly exposed to rising groundwater and intensifying storm surges, accurately predicting surface flooding, emerging groundwater, subsurface water dynamics and contaminant transport becomes critical. This dissertation addresses this challenge through an integrated, three-part analysis of hydrologic response, geochemical indicators, and site vulnerability assessment tools tailored to coastal conditions.The San Francisco Bay Area faces mounting risks from sea level rise, a consequence of climate change that threatens to exacerbate both coastal flooding and the emergence of shallow groundwater. These hydrologic shifts can mobilize legacy contaminants buried in coastal sediments and artificial fill, heightening the potential for human exposure, particularly to volatile organic compounds that pose vapor intrusion and groundwater contamination risks. This dissertation presents an integrated, three-part investigation into the physical and geochemical processes driving groundwater emergence and contaminant mobilization under sea level rise and extreme climate events, with a focus on practical tools for risk assessment and site prioritization.In Chapter Two, field monitoring across 16 wells in three representative low-lying communities, Manzanita, Tamalpais Valley, and Atchison Village over Water Year 2023 was used to quantify the response of groundwater levels to highest astronomical tides and atmospheric river events. Results show that sewer trenches and preferential flow paths amplify groundwater rise, particularly in artificial fill and near the coast, underscoring the critical role of subsurface infrastructure in flood dynamics.Chapter Three explores the geochemical signatures of groundwater, surface water, and emerging water sources using stable isotopes (δ¹⁸O, δ²H), major ions, and geochemical ratios. These data were used to distinguish between rainwater, tap water, saltwater, and true groundwater discharge. Mixing models and ternary diagrams showed distinct chemical profiles for water samples influenced by subsurface mobilization processes versus those from surface flooding from marine overtopping or rainwater ponding, enabling a more accurate identification of emerging groundwater.Building on these physical and chemical insights, Chapter Four introduces a rapid, cost-effective, multi-tiered indexing framework to prioritize contaminated sites vulnerable to climate-driven hydrologic change. The core of the framework is a modified DRASTIC index, which assesses hydrogeologic vulnerability. To capture additional risk factors, three supplemental indices were developed: the Site Characteristics Index, Contaminant Characteristics Index, and Inundation Vulnerability Index. These Supplementary Indices integrate site specific data on geologic permeability, contaminant mobility, and flood susceptibility. Fourteen sites with volatile organic compound contamination- specifically chlorinated solvents such as trichloroethylene and tetrachloroethylene, and shallow groundwater were evaluated as sea level rise and groundwater rise vulnerability, with index scores standardized using z-score transformation. Bivariate correlations and composite rankings, based on both predefined and data-driven weights, identified sites at highest risk. A strong correlation between the two weighting approaches confirms the strength of the method.Collectively, the findings of the research demonstrate that groundwater emergence and contaminant transport are intensifying hazards in coastal settings affected by sea level rise. The integrated framework developed in this study provides a scalable, evidence-based tool for prioritizing investigation and mitigation at contaminated sites, supporting proactive climate adaptation and public health protection strategies in vulnerable urban areas.Together, these chapters provide a unified framework for diagnosing, interpreting, and prioritizing groundwater-related risks in coastal contaminated sites. By combining field-based hydrologic monitoring, geochemical source tracing, and index-based site ranking, this study offers a replicable approach for identifying areas most susceptible to contaminant mobilization under future sea level and climate scenarios. The findings underscore the importance of incorporating subsurface processes into regional adaptation planning and provide a science-based foundation for directing limited resources toward the most at-risk locations. As sea level rise accelerates, these methods offer timely insights to guide sustainable land use, infrastructure resilience, and flood mitigation in vulnerable coastal communities.
■590 ▼aSchool code: 0036.
■650 4▼aHydrologic sciences
■650 4▼aSedimentary geology
■650 4▼aEnvironmental geology
■650 4▼aHydraulic engineering
■650 4▼aGeology
■653 ▼aAtmospheric rivers
■653 ▼aGroundwater response
■653 ▼aGroundwater vulnerability indexing
■653 ▼aHighest astronomical tides
■653 ▼aPreferential flow pathways
■653 ▼aSea level rise
■690 ▼a0388
■690 ▼a0594
■690 ▼a0407
■690 ▼a0218
■690 ▼a0372
■71020▼aUniversity of California, Santa Cruz▼bEarth Science.
■7730 ▼tDissertations Abstracts International▼g87-01B.
■790 ▼a0036
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357853▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
