Sea-level rise and coastal groundwater inundation and shoaling at select sites in California, USA
Sea-level rise and coastal groundwater inundation and shoaling at select sites in California, USA
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DOI：
10.1016/j.ejrh.2015.12.055
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发表时间：
2017-06-01
影响因子：
4.7
通讯作者：
Barnard, Patrick
中科院分区：
文献类型：
--
作者：
Hoover, Daniel J.;Odigie, Kingsley O.;Barnard, Patrick
研究区域：研究区域横跨美国沿海的加州，主要集中在三个主要地点：阿尔卡塔、Stinson海滩和Malibu Lagoon.Study focus：1 m和2 m海平面上升（SLR）预测被用来评估SLR驱动的地下水出现和变浅的脆弱性，在加州选择低洼的沿海地点。单独和合并的SLR和地下水出现的淹没情况下，开发使用数字高程模型的研究站点的地形和地下水表面构造从井数据或公布的地下水位contours.New水文见解的区域：SLR的影响是一个严重的问题，在沿海加州，它有一个长（1800公里）和人口稠密的海岸线。在加州，关于SLR驱动的地下水淹没的可能重要性的信息是有限的。在这项研究中，潜在的SLR驱动的地下水淹没在三个站点（阿尔卡塔，斯丁森海滩，和马里布泻湖）进行了调查1米和2米SLR的情况下。这些地点提供了对北方加州沿海平原、建在海滩沙或沙嘴上的沿海开发区以及与季节性溪流和护堤相关的沿海泻湖周围发达地区的脆弱性的深入了解。拥有丰富浅层地下水的北方加州沿海平原可能会出现大量且广泛的地下水涌出，而由于许多地区缺乏浅层地下水，更加干燥的加州中部和南部海岸沿着影响可能不那么严重。脆弱性分析因缺乏关于沿海浅层含水层的数据而受到阻碍，这些含水层通常不受研究，因为它们不适合家庭或农业使用。加州沿着许多地区可能存在浅层盐水层，这将大大增加SLR驱动的地下水出现和变浅的脆弱性。更好地了解加州沿海含水层对SLR的程度和响应将有助于为缓解和适应做好准备。由爱思唯尔公司出版
Study region: The study region spans coastal California, USA, and focuses on three primary sites: Arcata, Stinson Beach, and Malibu Lagoon.Study focus: 1m and 2m sea-level rise (SLR) projections were used to assess vulnerability to SLR-driven groundwater emergence and shoaling at select low-lying, coastal sites in California. Separate and combined inundation scenarios for SLR and groundwater emergence were developed using digital elevation models of study site topography and groundwater surfaces constructed from well data or published groundwater level contours.New hydrological insights for the region: SLR impacts are a serious concern in coastal California which has a long (1800 km) and populous coastline. Information on the possible importance of SLR-driven groundwater inundation in California is limited. In this study, the potential for SLR-driven groundwater inundation at three sites (Arcata, Stinson Beach, and Malibu Lagoon) was investigated under 1 m and 2 m SLR scenarios. These sites provide insight into the vulnerability of Northern California coastal plains, coastal developments built on beach sand or sand spits, and developed areas around coastal lagoons associated with seasonal streams and berms. Northern California coastal plains with abundant shallow groundwater likely will see significant and widespread groundwater emergence, while impacts along the much drier central and southern California coast may be less severe due to the absence of shallow groundwater in many areas. Vulnerability analysis is hampered by the lack of data on shallow coastal aquifers, which commonly are not studied because they are not suitable for domestic or agricultural use. Shallow saline aquifers may be present in many areas along coastal California, which would dramatically increase vulnerability to SLR -driven groundwater emergence and shoaling. Improved understanding of the extent and response of California coastal aquifers to SLR will help in preparing for mitigation and adaptation. Published by Elsevier B.V.