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Danard, Maurice B.; Munro, Adam; Murty, T. S.

doi:10.1023/a:1022990310410

Cited by 55 publications

(13 citation statements)

References 20 publications

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“…The first step in risk mitigation is achieved by defining vulnerable areas and appropriately managing these areas. Hazard reduction measures fall into two main categories: non-structural and structural measures (Danard et al 2003). Non-structural measures include not only relocation and land use regulation but also soft-armoring approaches such as beach nourishment.…”

Section: Discussionmentioning

confidence: 99%

“…The first step in risk mitigation is achieved by defining vulnerable areas and appropriately managing these areas (Danard et al 2003). This study aims to determine how ongoing and projected climatic and sea level changes will affect the historic settlement area on Simpson Point, in particular by quantifying the hazard potentials related to coastal erosion and flooding and identifying sites that would potentially be endangered by these processes.…”

Section: Communicated By David Reide Corbettmentioning

confidence: 99%

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Erosion and Flooding—Threats to Coastal Infrastructure in the Arctic: A Case Study from Herschel Island, Yukon Territory, Canada

Radosavljevic

Lantuit

Pollard

et al. 2015

Estuaries and Coasts

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Arctic coastal infrastructure and cultural and archeological sites are increasingly vulnerable to erosion and flooding due to amplified warming of the Arctic, sea level rise, lengthening of open water periods, and a predicted increase in frequency of major storms. Mitigating these hazards necessitates decision-making tools at an appropriate scale. The objectives of this paper are to provide such a tool by assessing potential erosion and flood hazards at Herschel Island, a UNESCO World Heritage candidate site. This study focused on Simpson Point and the adjacent coastal sections because of their archeological, historical, and cultural significance. Shoreline movement was analyzed using the Digital Shoreline Analysis System (DSAS) after digitizing shorelines from 1952, 1970, 2000, and 2011. For purposes of this analysis, the coast was divided in seven coastal reaches (CRs) reflecting different morphologies and/or exposures. Using linear regression rates obtained from these data, projections of shoreline position were made for 20 and 50 years into the future. Flood hazard was assessed using a least cost path analysis based on a high-resolution light detection and ranging (LiDAR) dataset and current Intergovernmental Panel on Climate Change sea level estimates. Widespread erosion characterizes the study area. The rate of shoreline movement in different periods of the study ranges from −5.5 to 2.7 m·a Ice-rich coastal sections most exposed to wave attack exhibited the highest rates of coastal retreat. The geohazard map combines shoreline projections and flood hazard analyses to show that most of the spit area has extreme or very high flood hazard potential, and some buildings are vulnerable to coastal erosion. This study demonstrates that transgressive forcing may provide ample sediment for the expansion of depositional landforms, while growing more susceptible to overwash and flooding.

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Section: Discussionmentioning

confidence: 99%

Section: Communicated By David Reide Corbettmentioning

confidence: 99%

Erosion and Flooding—Threats to Coastal Infrastructure in the Arctic: A Case Study from Herschel Island, Yukon Territory, Canada

Radosavljevic

Lantuit

Pollard

et al. 2015

Estuaries and Coasts

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“…While a large number of analytical solutions for tidal propagation through single and multilayer aquifer systems exist, they are rarely tested against field data, and field studies typically only analyze propagation of monochromatic tidal signals in sandy unconfined aquifer settings. This study also aims to advance understanding of the propagation of offshore storm pulse forcing through coastal aquifers; this addresses the increasing need to understand the response of coastal groundwater dynamics to offshore storms given predicted climate change effects including the increasing intensity and frequency of storm events (e.g., Danard et al, 2003;Wu et al, 2002). In this paper, data collected from a groundwater monitoring network installed on a sandy barrier island (Sable Island, NS, Canada) are first analyzed to evaluate the propagation of the tidal and offshore storm pulse signals, respectively, and subsequently to infer the structure of the aquifer system.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Tide and Offshore Storm‐Induced Water Table Fluctuations for Structural Characterization of a Coastal Island Aquifer

Trglavcnik

Morrow

Weber

et al. 2018

Water Resources Research

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Analysis of water table fluctuations can provide important insight into the hydraulic properties and structure of a coastal aquifer system including the connectivity between the aquifer and ocean. This study presents an improved approach for characterizing a permeable heterogeneous coastal aquifer system through analysis of the propagation of the tidal signal, as well as offshore storm pulse signals through a coastal aquifer. Offshore storms produce high wave activity, but are not necessarily linked to significant onshore precipitation. In this study, we focused on offshore storm events during which no onshore precipitation occurred. Extensive groundwater level data collected on a sand barrier island (Sable Island, NS, Canada) show nonuniform discontinuous propagation of the tide and offshore storm pulse signals through the aquifer with isolated inland areas showing enhanced response to both oceanic forcing signals. Propagation analysis suggests that isolated inland water table fluctuations may be caused by localized leakage from a confined aquifer that is connected to the ocean offshore but within the wave setup zone. Two‐dimensional groundwater flow simulations were conducted to test the leaky confined‐unconfined aquifer conceptualization and to identify the effect of key parameters on tidal signal propagation in leaky confined‐unconfined coastal aquifers. This study illustrates that analysis of offshore storm signal propagation, in addition to tidal signal propagation, provides a valuable and low resource approach for large‐scale characterization of permeable heterogeneous coastal aquifers. Such an approach is needed for the effective management of coastal environments where water resources are threatened by human activities and the changing climate.

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“…(Goodman and Powell, 2003) TS Rock block movement may generate concentrated leakage, affecting SHy. (Goodman and Powell 2003) Rock foundation stability (RfS) Reservoir (Res) and dam safety and sustainability TS Storm may induce SW on a Res (lake) (Danard et al, 2003) TS Cli may trigger MW (Y. Zhang et al 2013b;Wang et al 2013;Saucedo et al 2008) TM Cli may trigger events triggering GF (Osti et al 2011;Dussaillant et al 2009 (Nonveiller 1987;Gvelesiani et al, 1989) MW TS MW add to Sed TS MW may lead to Res bank erosion (Gatto and Doe, 1987) MW may induce SW damaging Res sideways.…”

Section: Appendixmentioning

confidence: 99%

Methodology for geohazard assessment for hydropower projects

et al. 2015

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The paper presents a comprehensive methodology for a multihazard assessment, including an associated multihazard monitoring programme. An existing method in system theory is extended for multiple systems and used to demonstrate the importance of considering geohazard interrelations in the safety monitoring of reservoirs and dams. The method is applied to systems of geohazards and monitoring parameters. In both systems, there is a reservoir retained by one or more dams. Geohazards in hydropower project perspectives as well as monitoring opportunities are classified. The results are presented in a colour-coded matrix visually mapping ranked interrelations for the two systems. The methodology proposed provides a clear view on the prospective that individual geohazards may trigger other geohazards as well as on the geohazard-triggering potential of the reservoir itself. The warning potential of the possible monitoring parameters is also mapped and interrelated to the individual geohazards. The results demonstrate the importance of a comprehensive multidisciplinary monitoring programme for reliable operation and risk management of hydropower projects.

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Untitled

Cited by 55 publications

References 20 publications

Erosion and Flooding—Threats to Coastal Infrastructure in the Arctic: A Case Study from Herschel Island, Yukon Territory, Canada

Erosion and Flooding—Threats to Coastal Infrastructure in the Arctic: A Case Study from Herschel Island, Yukon Territory, Canada

Analysis of Tide and Offshore Storm‐Induced Water Table Fluctuations for Structural Characterization of a Coastal Island Aquifer

Methodology for geohazard assessment for hydropower projects

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