本文主要介绍了SURFER图件到M APG IS图件的转换,使用M APG IS软件中的图象转换、控制点文件及图件“误差校正”等功能绘制激电测深断面图的详细方法和步骤,解决了剖面地形起伏不平和AB/2供电极距不等间距情况下计算机制作激电测深断面...本文主要介绍了SURFER图件到M APG IS图件的转换,使用M APG IS软件中的图象转换、控制点文件及图件“误差校正”等功能绘制激电测深断面图的详细方法和步骤,解决了剖面地形起伏不平和AB/2供电极距不等间距情况下计算机制作激电测深断面图方面的难题。展开更多
In recent years, intensifying waterlogging, salt water intrusion, wetland loss, and ecosystem degradation in Chinese delta cities and adjacent regions have generated the pressing need to create an urban form that is s...In recent years, intensifying waterlogging, salt water intrusion, wetland loss, and ecosystem degradation in Chinese delta cities and adjacent regions have generated the pressing need to create an urban form that is suited to both current and future climates incorporating sea level rise. However, adaptation planning uptake is slow. This is particularly unfortunate because patterns of urban form interact with mean sea level rise （MSLR） in ways that reduce or intensify its impact. There are currently two main barriers that are significant in arresting the implementation of adaptation planning with reference to the MSLR projections composed of geomorphologic MSLR projections and eustatic MSLR projections from global climate warming, and making a comprehensive risk assessment of MSLR projections. The present review shows recent progresses in mapping MSLR projections and their risk assessment approaches on Chinese delta cities, and then a perspective of adapting these cities to MSLR projections as following six aspects. 1） The geomorphologic MSLR projections are contributed by the natural tectonic subsidence projections and the MSLR projections by anthropogenic geomorphologic change. The former needs to be updated in a global framework. The latter is accumulated by land subsidence from underground water depletion, water level fall caused by the erosion of riverbeds from a sediment supply decline attributed to the construction of watershed dams, artificial sand excavation, water level raise by engineering projects including land reclamation, deep waterway regulation, and fresh water reservoirs. 2） Controlling MSLR projections by anthropogenic geomorphologic changes. 3） The IPCC AR5 RCPs MSLRs scenarios are expected to be projected to the local eustatic MSLR projections on the Chinese deltas. 4） The MSLR projections need to be matched to a local elevation datum. 5） Modeling approaches of regional river-sea numerical with semi- analytical hydrodynamics, estuarine channel network, system dynamics and adaptat展开更多
以榆林市榆阳区岔河则乡为研究区域,选取现阶段常用的CASS10.1、ArcGIS10.1、Surfer13、Civil 3D 2016和飞时达12.1五款土方计算软件,对土方计算结果进行对比分析。结果表明:五款软件通过三角网法计算的土方量基本相同,ArcGIS10.1和Surf...以榆林市榆阳区岔河则乡为研究区域,选取现阶段常用的CASS10.1、ArcGIS10.1、Surfer13、Civil 3D 2016和飞时达12.1五款土方计算软件,对土方计算结果进行对比分析。结果表明:五款软件通过三角网法计算的土方量基本相同,ArcGIS10.1和Surfer13的插值计算方法没有提高土方计算精度,原始数据的分布和密度能从根本上保证土方计算的精度;相对于基于CAD平台的软件(CASS10.1、Civil 3D 2016和飞时达12.1),基于地理信息系统的软件(ArcGIS10.1和Surfer13)数据处理速度快,可视化程度高,建模准确快速,从而使得土方计算变得更加快速准确。展开更多
基金Acknowledgments This study was financially supported by the Shanghai Science and Technology Committee （10dz1210600）, the National Sea Welfare Project （201005019-09）, the Natural Science Foundation of China （41476075, 41340044）, and the China Geological Survey （12120115043101 ）.
文摘In recent years, intensifying waterlogging, salt water intrusion, wetland loss, and ecosystem degradation in Chinese delta cities and adjacent regions have generated the pressing need to create an urban form that is suited to both current and future climates incorporating sea level rise. However, adaptation planning uptake is slow. This is particularly unfortunate because patterns of urban form interact with mean sea level rise （MSLR） in ways that reduce or intensify its impact. There are currently two main barriers that are significant in arresting the implementation of adaptation planning with reference to the MSLR projections composed of geomorphologic MSLR projections and eustatic MSLR projections from global climate warming, and making a comprehensive risk assessment of MSLR projections. The present review shows recent progresses in mapping MSLR projections and their risk assessment approaches on Chinese delta cities, and then a perspective of adapting these cities to MSLR projections as following six aspects. 1） The geomorphologic MSLR projections are contributed by the natural tectonic subsidence projections and the MSLR projections by anthropogenic geomorphologic change. The former needs to be updated in a global framework. The latter is accumulated by land subsidence from underground water depletion, water level fall caused by the erosion of riverbeds from a sediment supply decline attributed to the construction of watershed dams, artificial sand excavation, water level raise by engineering projects including land reclamation, deep waterway regulation, and fresh water reservoirs. 2） Controlling MSLR projections by anthropogenic geomorphologic changes. 3） The IPCC AR5 RCPs MSLRs scenarios are expected to be projected to the local eustatic MSLR projections on the Chinese deltas. 4） The MSLR projections need to be matched to a local elevation datum. 5） Modeling approaches of regional river-sea numerical with semi- analytical hydrodynamics, estuarine channel network, system dynamics and adaptat
文摘以榆林市榆阳区岔河则乡为研究区域,选取现阶段常用的CASS10.1、ArcGIS10.1、Surfer13、Civil 3D 2016和飞时达12.1五款土方计算软件,对土方计算结果进行对比分析。结果表明:五款软件通过三角网法计算的土方量基本相同,ArcGIS10.1和Surfer13的插值计算方法没有提高土方计算精度,原始数据的分布和密度能从根本上保证土方计算的精度;相对于基于CAD平台的软件(CASS10.1、Civil 3D 2016和飞时达12.1),基于地理信息系统的软件(ArcGIS10.1和Surfer13)数据处理速度快,可视化程度高,建模准确快速,从而使得土方计算变得更加快速准确。
