کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6413538 1629947 2013 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Unraveling the heat island effect observed in urban groundwater bodies - Definition of a potential natural state
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Unraveling the heat island effect observed in urban groundwater bodies - Definition of a potential natural state
چکیده انگلیسی


- We provide a concept for sustainable thermal management of urban groundwater bodies.
- Illustration of real-world example, including state-of-the-art process knowledge.
- Description of the transient character of the thermal groundwater regimes.
- Method to capturing the current thermal state of urban groundwater bodies.
- Approaches for compensating thermal influences of urbanization and climate change.

SummaryA superposition of several thermal processes leads to an elevation of groundwater temperatures of up to 9 °C above the natural state in the city of Basel, Switzerland. The urban thermal groundwater regime is influenced by: (1) urbanization and annual heating periods; (2) thermal groundwater use; (3) seasonal trends; (4) river-groundwater interaction; and (5) climate change and consequences thereof.The combination of short- and long-term data analysis, including conventional and high-resolution multilevel groundwater temperature monitoring, as well as 3D numerical groundwater flow and heat-transport modeling allowed quantifying the thermal influences on the investigated urban groundwater body. Results facilitate to describe the “present state” of the urban thermal groundwater regime and to derive a “potential natural state” of the investigated groundwater body.The study originated from a request of the executive council to provide a basis for cost estimates of infrastructure adaptation measures necessary to mitigate the impact of climate change. It is shown that the principal trigger for the observed thermal development is not climate change but that local and regional anthropogenic factors are dominating.Although in urban areas, groundwater is increasingly used for cooling purposes; the geothermal potential, resulting from elevated groundwater temperatures, is generally not exploited. The presented approach provides a basis for the setup of combined and thermally balanced heating and cooling systems.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hydrology - Volume 501, 25 September 2013, Pages 193-204
نویسندگان
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