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Multi-scale Investigation of Principal Heat Transport Processes in Subsurface Urban Heat Islands

地下城市热岛主要热传输过程的多尺度研究

基本信息

批准号：
230799312
负责人：
Professor Dr. Philipp Blum
金额：
--
依托单位：
Abteilung Ingenieurgeologie
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2012
资助国家：
德国
起止时间：
2011-12-31 至 2016-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/230799312?language=en
关键词：
Multi scale Investigation Principal Heat

项目摘要

As a result of population growth and urbanization, air temperatures in urban regions are significantly elevated, which is known as the so-called Urban Heat Island (UHI) effect. To a lesser extent, research has been dedicated to the thermal impact on the subsurface. The temperature in the shallow urban subsurface slowly increases with urban development, leading to large-scale thermal anomalies underground as well. Now, are these subsurface UHIs a blessing or a curse? On the one hand, elevated ground temperatures might promote the growth of pathogens in groundwater. On the other hand, the amount of heat available in such aquifers offers a great potential to cover energy demands and/or storages in urban areas using it for space heating or cooling by means of geothermal heat pump systems. To take advantage of this potential of urban aquifers, the principal heat transport processes in the subsurface urban heat islands have to be comprehensively understood. Hence, the main objective of this research project is to examine the intensity of subsurface UHIs and to quantify all dominant heat fluxes beneath. As study sites, we selected the two cities, Zurich and Karlsruhe, to be able to distinguish between site-specific and universally valid findings. The collaborative project of the two local partners will also benefit from their complementary expertise in field investigation and simulation. The methodological framework is innovative, uses a multi-scale monitoring strategy and process-based analytical and numerical simulations in anthropogenically influenced environments, together with geophysical/hydrogeological, statistical, engineering and remote sensing techniques.

由于人口增长和城市化，城市地区的气温显著升高，这就是所谓的城市热岛效应。在较小程度上，研究一直致力于对地下的热影响。随着城市的发展，城市浅层地下温度缓慢升高，导致地下也出现大范围的热异常。那么，这些地下UHIs是福还是祸呢？一方面，升高的地面温度可能促进地下水中病原体的生长。另一方面，这种含水层中可用的热量提供了巨大的潜力，可以满足城市地区的能源需求和/或储存，利用地热热泵系统将其用于空间加热或冷却。为了充分利用城市含水层的这一潜力，必须全面了解城市地下热岛的主要热输送过程。因此，本研究项目的主要目标是检查地下UHIs的强度，并量化地下所有主要的热通量。作为研究地点，我们选择了两个城市，苏黎世和卡尔斯鲁厄，以便能够区分特定地点和普遍有效的研究结果。两个当地伙伴的合作项目也将受益于他们在实地调查和模拟方面的互补专业知识。方法框架是创新的，使用多尺度监测战略和在人为影响环境中基于过程的分析和数值模拟，以及地球物理/水文地质、统计、工程和遥感技术。