Innovative analysis and use of high‐resolution DTMs for quantitative interrogation of Earth‐surface processes
Innovative analysis and use of high‐resolution DTMs for quantitative interrogation of Earth‐surface processes
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DOI：
10.1002/esp.3616
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发表时间：
2014-08
影响因子：
3.3
通讯作者：
P. Passalacqua;J. Hillier;P. Tarolli
中科院分区：
文献类型：
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作者：
P. Passalacqua;J. Hillier;P. Tarolli
这是数字景观的时代；强大的传感技术的广泛应用彻底改变了探询景观以了解塑造景观的过程的方式。现在已经以“高分辨率”采集了大得多的区域：目前全球范围内的精度为数十米，局部精度为毫米级。这使得可以在地球表面过程运行的各个尺度上对地貌特征进行可视化和分析。尤其令人兴奋的是在重复测量中捕获过程动态，通过运动结构 (SfM) 等技术生成低成本的可访问数据，这只会变得更加重要。但关键的挑战仍然存在；解释高分辨率数字地形模型（DTM），特别是通过以稳健和客观的方式提取地貌特征，然后将观察到的特征与底层物理过程联系起来。为了应对新的数据和挑战，近年来，DTM 中原始数据的处理得到了改进，数据融合技术得到了发展，地形数据的新颖定量分析以及创新的地貌测绘也得到了发展。本卷中收集的 12 篇论文通过 DTM 分析展示了探究地球表面过程的进展。它们涵盖了广泛的学科和时空尺度，从滑坡多发地区到农业改造地区，再到山地景观和沿海地区。然而，它们都展示了对高分辨率地形数据中包含的信息的定量利用，我们相信这些信息将巩固我们对地球表面过程许多要素的理解。这里介绍的大部分论文都是在 2011 年欧洲地球科学联盟大会的一次会议上首次发表的。版权所有 © 2014 John Wiley & Sons, Ltd.
This is the era of digital landscapes; the widespread availability of powerful sensing technologies has revolutionized the way it is possible to interrogate landscapes in order to understand the processes sculpting them. Vastly greater areas have now been acquired at ‘high resolution’: currently tens of metres globally to millimetric precision and accuracy locally. This permits geomorphic features to be visualized and analysed across the scales at which Earth‐surface processes operate. Especially exciting is the capturing of process dynamics in repeated surveying, which will only become more important with low‐cost accessible data generation through techniques such as Structure from Motion (SfM). But the key challenge remains; to interpret high resolution Digital Terrain Models (DTMs), particularly by extracting geomorphic features in robust and objective ways and then linking the observed features to the underlying physical processes. In response to the new data and challenges, recent years have seen improved processing of raw data into DTMs, development of data fusion techniques, novel quantitative analysis of topographic data, and innovative geomorphological mapping. The twelve papers collected in this volume sample this progress in interrogating Earth‐surface processes through the analysis of DTMs. They cover a wide range of disciplines and spatio‐temporal scales, from landslide prone landscapes, to agriculturally modified regions, to mountainous landscapes, and coastal zones. They all, however, showcase the quantitative exploitation of information contained in high‐resolution topographic data that we believe will underpin the improvement of our understanding of many elements of Earth‐surface processes. Most of the papers introduced here were first presented in a conference session at the European Geosciences Union General Assembly in 2011. Copyright © 2014 John Wiley & Sons, Ltd.