EarthScope USArray Transportable Array (TA) Surface Pressure Observations Sampled at 1 Hz Frequency

The EarthScope USArray Transportable Array (TA) contains over 400 seismic station platforms deployed in a pseudo-grid fashion (spaced approximately 70 km apart) across a portion of the United States. This array is part of a large initiative within the geoscience field to improve earth mapping and understanding of subsurface properties. Individual platforms report for 1 to 2 years and then are retrieved and redeployed farther east. Atmospheric pressure sensors were added to many platforms in 2010 while the array was deployed in the Central U.S. to assist with identification of seismic signals produced by atmospheric phenomena. These sensors have resulted in a tremendous dataset of surface pressure observations with high temporal frequency not commonly found in atmospheric sciences outside of smaller field campaigns.
This dataset provides surface pressure observations at 1 Hz frequency from these deployments beginning 1 January 2010. The years 2010-2011 feature deployments over the central U.S. Great Plains, 2012-2013 over the interior eastern U.S., and 2014-2015 along the U.S. east coast. While average station life is 1 to 2 years, some deployments have been kept in place and thus have longer records. Further, the next phase of the TA project has begun with several platforms deployed in Alaska, which will continue over the next few years. There are also deployments located near the Cascade Mountain range in the Pacific Northwest. Data files are provided in HDF5 format, where a single file contains data for a particular year and station. Basic metadata and quality control files are also available.

地球系统美国阵列可移动阵列（USArray Transportable Array，简称TA）在美国部分地区部署了超过400个地震站平台，这些平台以伪网格形式（相距约70公里）布置。该阵列是地球科学领域一项旨在提升地球测绘与地壳性质理解的大型计划的一部分。各个平台运行1至2年后将被回收并重新部署至更东部的地区。2010年，在中央美国部署阵列期间，为许多平台增加了大气压力传感器，以辅助识别由大气现象产生的地震信号。这些传感器收集了大量的表面压力观测数据，其时间频率之高在除小型野外活动外的气象科学中较为罕见。该数据集提供了自2010年1月1日起的表面压力观测，频率为1赫兹。2010年至2011年，部署覆盖了美国中部的大平原，2012年至2013年覆盖了美国东部内陆，2014年至2015年沿美国东海岸。尽管平均站龄为1至2年，但一些部署已被保留，从而产生了更长的记录。此外，TA项目的下一阶段已经开始，在阿拉斯加部署了数个平台，这一过程将持续数年。太平洋西北部的卡斯凯德山脉附近也有部署。数据文件以HDF5格式提供，其中单个文件包含特定年份和站点的数据。同时，还提供了基本元数据和质量控制文件。