干旱区生态环境知识资源中心(Arid): Nitrate Biogeochemistry and Reactive Transport in California Groundwater: LDRD Final Report

Arid

DOI	10.2172/878204
报告编号	UCRL-TR-219675
来源ID	OSTI_ID: 878204
	Nitrate Biogeochemistry and Reactive Transport in California Groundwater: LDRD Final Report
	Esser, B K; Beller, H; Carle, S; Cey, B; Hudson, G B; Leif, R; LeTain, T; Moody-Bartel, C; Moore, K; McNab, W; Moran, J; Tompson, A
英文摘要	Nitrate is the number one drinking water contaminant in the United States. It is pervasive in surface and groundwater systems,and its principal anthropogenic sources have increased dramatically in the last 50 years. In California alone, one third of the public drinking-water wells has been lost since 1988 and nitrate contamination is the most common reason for abandonment. Effective nitrate management in groundwater is complicated by uncertainties related to multiple point and non-point sources, hydrogeologic complexity, geochemical reactivity, and quantification of denitrification processes. In this paper, we review an integrated experimental and simulation-based framework being developed to study the fate of nitrate in a 25 km-long groundwater subbasin south of San Jose, California, a historically agricultural area now undergoing rapid urbanization with increasing demands for groundwater. The modeling approach is driven by a need to integrate new and archival data that support the hypothesis that nitrate fate and transport at the basin scale is intricately related to hydrostratigraphic complexity, variability of flow paths and groundwater residence times, microbial activity, and multiple geochemical reaction mechanisms. This study synthesizes these disparate and multi-scale data into a three-dimensional and highly resolved reactive transport modeling framework.
出版年	2006
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	07 ISOTOPES AND RADIATION SOURCES ; 58 GEOSCIENCES ; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ; 54 ENVIRONMENTAL SCIENCES ; 60 APPLIED LIFE SCIENCES ; BIOGEOCHEMISTRY ; CALIFORNIA ; CONTAMINATION ; DENITRIFICATION ; DRINKING WATER ; HYPOTHESIS ; MANAGEMENT ; NITRATES ; REACTION KINETICS ; SIMULATION ; TRANSPORT ; GROUND WATER
URL	http://www.osti.gov/scitech/servlets/purl/878204
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/269125
推荐引用方式 GB/T 7714	Esser, B K,Beller, H,Carle, S,et al. Nitrate Biogeochemistry and Reactive Transport in California Groundwater: LDRD Final Report,2006.