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首页> 外文期刊>Australian journal of water resources >Instream NanoTEM: providing increased resolution to stream salinisation and floodplain processes along the River Murray, southeast Australia
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Instream NanoTEM: providing increased resolution to stream salinisation and floodplain processes along the River Murray, southeast Australia

机译：Instream NanoTEM：为澳大利亚东南部的默里河沿岸的盐化和洪泛区过程提供更高的分辨率

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摘要

Increasing salinity in the River Murray is well documented and is of concern environmentally, economically and socially. The Murray Darling Basin Commission and the Mallee Catchment Management Authority engaged the authors to collect base-line in-stream NanoTEM data within the River Murray from Lock 1 to Mallee Cliffs (675 km). This is a new application of a high resolution fast sampling Transient Electro-Magnetic (TEM) system, towed behind a boat, taking soundings every seven to ten metres along the river. The observed NanoTEM response was interpreted against the current understanding of the regional hydrogeology and groundwater processes in and around the river. This paper summarises some of the results from this investigation. The observed response correlates strongly with previously mapped major changes in underlying lithostratigraphy along the Murray River, and with gaining and losing reaches of the river. The extensive length of the survey provides an insight into potential interactions between the river, floodplain and groundwater, but does not replace the need for focussed ground-truthing programs to examine specific correlations. This rapid, portable technique should be applicable outside the Murray-Darling Basin as well as at additional locations within the Basin.
机译：有证据表明，默里河的盐度不断提高，在环境，经济和社会方面均引起关注。 Murray达令盆地委员会和Mallee流域管理委员会委托作者收集从Lock 1到Mallee Cliffs（675公里）的Murray河内的基线流式NanoTEM数据。这是高分辨率的快速采样瞬变电磁（TEM）系统的新应用，该系统被拖到船后，沿河每隔7至10米进行一次测深。所观察到的NanoTEM响应是根据当前对河流及其周围地区水文地质学和地下水过程的理解来解释的。本文总结了这项调查的一些结果。观察到的响应与沿墨累河沿岸的潜在岩性地层中先前绘制的主要变化以及河流的得失有很大关系。这项广泛的调查提供了对河流，洪泛区和地下水之间潜在相互作用的深入了解，但并不能代替重点研究地面实地计划来检查特定相关性的需求。这种快速，便携式的技术应适用于默里-达令盆地以外以及盆地内的其他位置。

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