MRG2007_CORSICA_ALLXYZ.SHP: Processed Continuous Resistivity Profile (CRP) Data Below the Sediment Water Interface From the Corsica River Estuary, Maryland Collected from May 15 to May 17, 2007 on USGS Cruise 07005

Submarine groundwater discharge (SGD) into Maryland's Corsica River Estuary was investigated as part of a larger study to determine the importance of nutrient delivery to Chesapeake Bay via this pathway. Resource managers are concerned about nutrients that are entering the estuary via submarine groundwater discharge from this primarily agricultural watershed that may be contributing to eutrophication, harmful algal blooms, and fish kills. An interdisciplinary U.S. Geological Survey (USGS) science team conducted field operations in the estuary in April and May 2007. Techniques used included continuous resistivity profiling (CRP), piezometer sampling, seepage meter measurements, and collection of a radon tracer time series. Better understanding of the style, locations, and rates of groundwater discharge could lead to improved models and mitigation strategies for estuarine nutrient over-enrichment in the Corsica River Estuary, and other similar settings. More information on the field work can be accessed from the Woods Hole Coastal and Marine Science Center Field Activity webpage: <http://quashnet.er.usgs.gov/data/2007/07005/>

本研究作为一项更大规模研究的一部分，针对美国马里兰州科西嘉河河口的海底地下水排泄（Submarine Groundwater Discharge, SGD）展开调查，旨在明确通过该途径向切萨皮克湾输送营养盐的重要性。资源管理者担忧，这片以农业为主的流域通过海底地下水排泄进入河口的营养盐，可能会引发水体富营养化、有害藻华及鱼类大规模死亡事件。2007年4月至5月，美国地质调查局（U.S. Geological Survey, USGS）的跨学科科学团队在该河口开展了野外作业。所采用的技术包括连续电阻率剖面法（Continuous Resistivity Profiling, CRP）、测压管采样、渗流计测量以及氡示踪剂时间序列采集。加深对地下水排泄模式、分布位置及速率的认知，可助力优化科西嘉河河口及其他类似区域的河口营养盐过度富集缓解模型与应对策略。有关本次野外工作的更多信息，可通过伍兹霍尔海岸与海洋科学中心野外活动网页获取：<http://quashnet.er.usgs.gov/data/2007/07005/>