青藏高原冰川变化遥感与GIS集成研究

遥感信息 Pub Date : 1997-08-03 DOI:10.1109/IGARSS.1997.615899

Zhen Li, Q. Zeng

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引用次数: 2

摘要

青藏高原上的冰川在地球气候系统中扮演着重要的角色。由于海拔高，交通不便，在青藏高原的一些地区，对冰川变化的定期、系统的调查几乎是不可能的。因此，遥感技术目前是测量冰川状况的主要方法，在许多情况下是唯一的方法。与GIS相结合，它提供了一个有效的工具来分析冰川的现状和变化。在青藏高原的一个研究地点，利用1973 - 1994年的21年Landsat系列影像和地形图，采用遥感和GIS综合技术对冰川的变化进行了制图和测量。根据图像分析结果，包括共配准、分类、矢量分析和面积计算，描述冰川波动的细节，如冰川面积和冰川末端退缩或前进幅度在不同日期的变化。在研究区内，21 a期间，确定了北部冰川前进，南部冰川后退，平均变化率为50 ~ 105 m a/sup -1/。结果表明，Landsat数据为冰川变化研究提供了重要的信息来源。

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Deriving glaciers variation integrated remote sensing and GIS in the Tibetan plateau

Glaciers on the Tibetan plateau play an important role in the Earth's climate system. Because of high altitude and difficulties in access, regular, systematic surveys of glacier variation are almost impossible in some regions of the Tibetan plateau. As a result, remote sensing techniques are at present the primary, in many cases the only way to measure the state of glaciers. In combination with GIS, it provides an efficient tool to analyze the current state and changes in glaciers. The authors used a technique of integrated remote sensing and GIS to map and measure on the changes in glaciers using a 21-year series of Landsat images (from 1973 to 1994) and topographic maps on a study site on the Tibetan plateau. The details of glacier fluctuation, such as area of glaciers and the changes in the magnitude of recession or advance of a glacier terminus on different dates, are described based on the results of image analysis, including coregistration, classification, vector analysis, and area calculation. Within the study area, during the 21 years, it was determined that the northern glaciers advanced and the southern glaciers retreated, the average rate of change was 50 to 105 m a/sup -1/. The results show that Landsat data provide an important source of information for studies of glacier variation.

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来源期刊

遥感信息

自引率

0.00%

发文量

3984

期刊介绍： Remote Sensing Information is a bimonthly academic journal supervised by the Ministry of Natural Resources of the People's Republic of China and sponsored by China Academy of Surveying and Mapping Science. Since its inception in 1986, it has been one of the authoritative journals in the field of remote sensing in China.In 2014, it was recognised as one of the first batch of national academic journals, and was awarded the honours of Core Journals of China Science Citation Database, Chinese Core Journals, and Core Journals of Science and Technology of China. The journal won the Excellence Award (First Prize) of the National Excellent Surveying, Mapping and Geographic Information Journal Award in 2011 and 2017 respectively. Remote Sensing Information is dedicated to reporting the cutting-edge theoretical and applied results of remote sensing science and technology, promoting academic exchanges at home and abroad, and promoting the application of remote sensing science and technology and industrial development. The journal adheres to the principles of openness, fairness and professionalism, abides by the anonymous review system of peer experts, and has good social credibility. The main columns include Review, Theoretical Research, Innovative Applications, Special Reports, International News, Famous Experts' Forum, Geographic National Condition Monitoring, etc., covering various fields such as surveying and mapping, forestry, agriculture, geology, meteorology, ocean, environment, national defence and so on. Remote Sensing Information aims to provide a high-level academic exchange platform for experts and scholars in the field of remote sensing at home and abroad, to enhance academic influence, and to play a role in promoting and supporting the protection of natural resources, green technology innovation, and the construction of ecological civilisation.