High-resolution reflection and refraction seismic characterization of the projected PIER-ICDP fluid monitoring sites in the Novy Kostel swarm earthquake region

将进行反射和折射地震勘测，以确定诺维科斯特勒(CR)附近群震地区两个预计的ICDP流体监测点附近的地下特征。两项深度约1公里的三维反射地震勘探将提供高分辨率图像，以优化切布盆地哈图索夫和西部KrusnéHory山麓水晶基岩Dolni Castkov附近的准确钻探位置。它们将得到远炮检距的补充，以改善目标深度约500米处陡峭断层的3D成像。另外三条固定传播的反射和折射剖面将连接这些测量，并将两个钻探地点的高分辨率3D图像嵌入该地区的一个更大的模型中。2D折射数据还将提供3D数据叠前偏移所需的目标深度处的地震速度的详细信息。将应用现代地震成像和反演工具(菲涅尔体偏移、全波形反演)来分析数据。不同的调查和方法将提供预测钻探地点和西北部波希米亚地震区最上层地壳的多尺度/多参数图像。

Reflection and refraction seismic surveys will be performed to characterize the subsurface in the vicinity of two projected ICDP fluid monitoring sites in the swarmquake area near Novy Kostel (CR). Two 3D reflection seismic surveys with ~1 km penetration depth will provide high-resolution images to optimize the exact drill locations at Hartousov in the Cheb Basin, and near Dolni Castkov in the crystalline bedrock of the Western Krusné hory foothills. They will be complemented by far-offset shots to improve the 3D imaging of steep faults at the target depth of ~500 m. Three additional fixed-spread reflection-and-refraction profiles will connect those surveys and embed the high-resolution 3D images of the two drill sites in a larger model of the area. The 2D refraction data will also provide detailed information on the seismic velocities at the target depth that is required for pre-stack migration of the 3D data. Modern seismic imaging and inversion tools (Fresnel-Volume Migration, Full Waveform Inversion) will be applied to analyze the data. The different surveys and methods will provide multi-scale/multi-parameter images of the projected drill sites and the uppermost crust in the NW Bohemia swarmquake area.