Magnetotelluric data and model for the 09GA-GA deep magnetotelluric transect

This dataset contains magnetotelluric data and a 3D inversion model from the 09GA-GA1 deep magnetotelluric transect, collected in Central Australia in 2009. The transect is 350 km long, with data acquired from 18 stations with both broadband and long period instrumentation, and 21 stations with broadband instrumentation only (a total of 39 sites). The resulting station spacing is 10km for the broadband stations, and 20km for stations with both broadband and long period instrumentation. We have reprocessed the broadband data using the Bounded Influence, Remote Reference Processing software (BIRRP), yielding an extended bandwidth of 0.003 to 1300 s and merged these data with the long period data. We have inverted the data using the ModEM 3D inversion code. More details on the data processing, analysis, modelling, and interpretation can be found in the following paper: Kirkby, A. and Duan, J., 2019. Crustal Structure of the Eastern Arunta Region, Central Australia, From Magnetotelluric, Seismic, and Magnetic Data. Journal of Geophysical Research: Solid Earth, 124. https://doi.org/10.1029/2018JB016223

本数据集包含2009年于澳大利亚中部采集的09GA-GA1深部大地电磁剖面的大地电磁数据与三维反演模型。该剖面全长350千米，共布设39个测点：其中18个站点同时配备宽带与长周期观测仪器，剩余21个站点仅配备宽带观测仪器。纯宽带站点的测点间距为10千米，兼具宽带与长周期仪器的站点间距为20千米。研究团队采用有界影响远程参考处理软件（Bounded Influence, Remote Reference Processing，简称BIRRP）对宽带数据进行重新处理，将有效带宽拓展至0.003至1300秒，并将处理后的宽带数据与长周期数据进行融合。随后使用ModEM三维反演代码对融合后的数据开展反演计算。有关数据处理、分析、建模与解译的更多细节可参阅以下论文：Kirkby, A.与Duan, J., 2019. 《澳大利亚中部阿伦塔东部区域的地壳结构——基于大地电磁、地震与磁数据》，《地球物理学研究杂志：固体地球》，124卷，https://doi.org/10.1029/2018JB016223