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

新科斯特群震区预计 PIER-ICDP 流体监测点的高分辨率反射和折射地震特征

• 批准号: 298847574
• 负责人: Professor Dr. Stefan Buske
• 金额: --
• 依托单位: Lehrstuhl für Angewandte Geophysik
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/298847574?language=en
• 关键词: resolution; reflection; refraction; seismic; characterization

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.

将进行反射和折射地震勘测，以表征 Novy Kostel (CR) 附近群震地区两个预计 ICDP 流体监测点附近的地下特征。两次穿透深度约为 1 公里的 3D 反射地震勘测将提供高分辨率图像，以优化 Cheb 盆地 Hartousov 和 Western Krusné hory 山麓结晶基岩中 Dolni Castkov 附近的精确钻探位置。它们将得到远偏移距拍摄的补充，以改善目标深度约 500 m 的陡峭断层的 3D 成像。三个额外的固定传播反射和折射剖面将连接这些勘测，并将两个钻探地点的高分辨率 3D 图像嵌入到该区域的更大模型中。 2D 折射数据还将提供 3D 数据叠前偏移所需的目标深度处地震速度的详细信息。现代地震成像和反演工具（菲涅耳体积偏移、全波形反演）将用于分析数据。不同的调查和方法将提供预计的钻探地点和波希米亚西北部群震地区最上层地壳的多尺度/多参数图像。