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首页> 外文期刊>Ocean & coastal management >Evaluation of surface urban heat island (SUHI) effect on coastal zone: The case of Istanbul Megacity
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Evaluation of surface urban heat island (SUHI) effect on coastal zone: The case of Istanbul Megacity

机译：城市地表热岛（SUHI）对沿海地区的影响评估：以伊斯坦布尔特大城市为例

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Urban expansion and development have greatly altered Land Use/Cover (LULC) structure in worldwide scale. Changing LULC types have some important side effects on evaporation and transmittance processes. Atmospheric air-land interactions are greatly influenced by LULC types. Since, the increasing rate of impervious surfaces has led to abnormal patterns in Land Surface Temperature (LST). Areas with relatively high urbanization rate such as coastal cities will probably more vulnerable to unwanted impacts of varying LSTs. Attractiveness character of the coastal regions due to potentially high living comfort in terms of transportation, recreation and industrialization is the main factor triggering fluctuations in LST values. Formation of SUHI is closely related to LST patterns and so as to LULC structure. Unplanned expansion of impervious surface class of LULC may potentially increase the chance of SUHIs occurrence along the coastal zone. Remote sensing technology is a valuable tool for determination of LULC as well as quantification of SUHI effect on a given land surface. In this study temporal evaluation of SUHI effect in a coastal metropol city is investigated. Landsat TM/ETM + data covering 1984-2011 period was used for determination of position, coverage and magnitude of SUHI phenomena in the city of Istanbul. SUHI density maps are obtained with a proposed approach and simultaneously Support Vector Machine (SVM) algorithm is used to produce LULC maps of the same region. Furthermore produced temporal data pool is used to find statistical relations between SUHI intensity and LULC maps using spatial random sampling methodology. Temporal trends of SUHI and LULC are also evaluated for the study area. Finally, SUHI character of megacity of Istanbul is comprehensively documented. (C) 2015 Elsevier Ltd. All rights reserved.
机译：城市扩张和发展已在全球范围内极大地改变了土地利用/覆盖（LULC）结构。改变LULC类型会对蒸发和透射过程产生一些重要的副作用。 LULC类型极大地影响了大气气陆相互作用。因此，不透水表面的增加导致陆地表面温度（LST）异常。沿海城市等城市化率相对较高的地区可能更容易受到各种LST的有害影响。在运输，娱乐和工业化方面可能具有较高的居住舒适度，因此沿海地区的吸引力特征是引发LST值波动的主要因素。 SUHI的形成与LST模式以及LULC结构密切相关。 LULC的不透水地表的无计划扩展可能会增加沿沿海地区发生SUHI的机会。遥感技术是确定LULC以及量化给定地面SUHI效应的宝贵工具。在这项研究中，研究了沿海大都市SUHI效应的时间评估。 1984-2011年期间的Landsat TM / ETM +数据用于确定伊斯坦布尔市SUHI现象的位置，覆盖范围和大小。 SUHI密度图是通过提出的方法获得的，同时使用支持向量机（SVM）算法生成相同区域的LULC图。此外，使用空间随机采样方法，使用生成的时间数据库来查找SUHI强度和LULC映射之间的统计关系。 SUHI和LULC的时间趋势也针对研究区域进行了评估。最后，全面记录了伊斯坦布尔特大城市的SUHI特征。 （C）2015 Elsevier Ltd.保留所有权利。

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