Maximum two-monthly surface water extent for MDB from MIM - Version 2024

The multi-index method (MIM) (refer to Ticehurst, Teng and Sengupta 2022 in the Related Links for a description of the method) was developed for mapping surface water across the Murray-Darling Basin (MDB) based on Landsat surface reflectance data available in Digital Earth Australia. More than thirty years of two-monthly images of surface water extent across the whole MDB have been produced using this method. This product was developed as part of the Murray-Darling Water and Environment Research Program (MD-WERP) project under Research Question 7 (RQ 7) (although the original Landsat MIM was developed as part of the Murray-Darling Basin Ecosystem Function (MDB-EF) project). The MD-WERP represents a collaborative effort between Commonwealth partners - including the Department of Agriculture, Water and the Environment, the Commonwealth Environmental Water Holder, and the Murray-Darling Basin Authority - and a research consortium, with funding provided by the Australian Government. RQ7 specifically focuses on advancing research to improve floodplain inundation and volume prediction. This is an updated version of this product (produced in 2024) , spanning from 1988 to June 2024. The data format as well as difference between this version and the original versions are described in the metadata document (see Supporting files). \nLineage: Digital Earth Australia provides analysis-ready Landsat surface reflectance data. These Landsat data from 1988 to June 2024 were extracted and processed using the CSIRO EASI platform and jupyter notebooks. Estimates of water extent from this product are used to calculate water depth (https://doi.org/10.25919/1t0t-y110).

多指数法（Multi-index Method, MIM）（方法详情参见相关链接中Ticehurst、Teng与Sengupta于2022年发表的研究），基于澳大利亚数字地球（Digital Earth Australia）提供的陆地卫星（Landsat）地表反射率数据，专为墨累-达令盆地（Murray-Darling Basin, MDB）的地表水制图任务开发。研究团队已借助该方法生成覆盖整个MDB的30余年每两月一期的地表水范围影像数据集。本产品作为墨累-达令水与环境研究计划（Murray-Darling Water and Environment Research Program, MD-WERP）项目的组成部分，隶属于其研究问题7（RQ7）（尽管最初的Landsat MIM方法是作为墨累-达令盆地生态系统功能（Murray-Darling Basin Ecosystem Function, MDB-EF）项目的一部分开发的）。MD-WERP项目由澳大利亚联邦合作方——包括农业、水利与环境部、联邦环境水持有者以及墨累-达令盆地管理局——与研究联盟联合推进，资助方为澳大利亚政府。RQ7的核心研究方向为改进洪泛区淹没范围与水量预测相关技术。本次发布的为2024年更新版本，时间跨度覆盖1988年至2024年6月。该版本与过往版本的差异及数据格式详情，请参见元数据文档（详见支持文件）。
数据溯源：澳大利亚数字地球提供预处理就绪的Landsat地表反射率数据。研究人员借助联邦科学与工业研究组织（Commonwealth Scientific and Industrial Research Organisation, CSIRO）的EASI平台与Jupyter Notebook，提取并处理了1988年至2024年6月的上述Landsat数据。本产品的地表水范围估算结果可用于计算水深（https://doi.org/10.25919/1t0t-y110）