Data Release for the 2007 Afghanistan Seismic Hazard Model

Gridded seismic hazard curve data, gridded ground motion data, and mapped gridded ground motion values are available for the 2007 Afghanistan Seismic Hazard Model. Probabilistic seismic hazard data and maps of Afghanistan for peak ground acceleration (PGA) and 0.2 and 1.0 second spectral acceleration at probability levels of 2 percent in 50 years (annual probability of 0.000404), 5 percent in 50 years (annual probability of 0.001026), and 10 percent in 50 years (annual probability of 0.0021), assuming firm rock soil conditions at 760 m/s, are available. Development of the 2007 Afghanistan Seismic Hazard Model is documented in the USGS Open-File Report 2007-1137 (https://pubs.usgs.gov/of/2007/1137/index.html). This dataset is considered a legacy dataset. The original dataset was uploaded to the USGS website at the time of publication of the seismic hazard model (2007) but was later moved over the the USGS ScienceBase Catalog (2019). The original dataset was assumed to be complete and accurate, but may contain inconsistencies when compared to more recent, actively maintained datasets.

本数据集涵盖2007年阿富汗地震危险性模型（2007 Afghanistan Seismic Hazard Model）配套的网格化地震危险性曲线数据、网格化地震动数据，以及带制图输出的网格化地震动数值。针对阿富汗地区，本数据集提供了峰值地面加速度（PGA）、0.2秒与1.0秒谱加速度的概率地震危险性数据与制图成果，其50年超越概率分别为2%（对应年超越概率0.000404）、5%（对应年超越概率0.001026）与10%（对应年超越概率0.0021），所有数据均基于剪切波速为760 m/s的坚硬基岩场地条件假设。2007年阿富汗地震危险性模型的研发细节已收录于美国地质调查局（USGS）公开文件报告2007-1137（USGS Open-File Report 2007-1137，https://pubs.usgs.gov/of/2007/1137/index.html）。本数据集属于遗留数据集，其原始版本在2007年该地震危险性模型发布时上传至美国地质调查局官方网站，后于2019年迁移至美国地质调查局ScienceBase目录。原始数据集被认为完整且准确，但与当前更晚近且仍在维护的数据集相比，可能存在不一致之处。