Environmental Instability Triggers: Hazard clusters analysis through geoacoustic data in a large coastal lagoon in southern Brazil

The research data presented here are seismic profiles cover anextension of approximately 1,000 km from the Patos Lagoon, divided into three sectors (Northen, Central, Southern). Seismic records were positioned through DGPS (Differential GlobalPositioning System) and acquired with a Geopulse Subbottom Profiler, from GeoAcousticsTM, an analog and digital system that can operate within a frequency range from 2 to 12 kHz. This seismic acquisition system consisted of a Geopulse receiver (5210A), a Geopulse transmitter (5430A), and a transducer (132B, with four elements). After few tests in place to assess the geoacoustic seismic response, a 3.5 kHz frequency acquisition was selected. The seismic data acquiring, and processing were performed using software SonarWiz (Chesapeake Technology), and the data was stored in SEG-Y digital format.本次发布的研究数据为地震剖面，覆盖范围自帕图斯潟湖（Patos Lagoon）起延伸约1000公里，被划分为北、中、南三个区段。地震记录通过差分全球定位系统（Differential Global Positioning System）进行定位，数据采集使用来自GeoAcoustics公司的Geopulse浅地层剖面仪，该系统为模拟-数字混合架构，工作频率范围为2~12 kHz。这套地震采集系统包含Geopulse接收机（型号5210A）、Geopulse发射机（型号5430A）以及四元换能器（型号132B）。经现场多次测试评估地声地震响应特性后，最终选定3.5 kHz的采集频率。地震数据的采集与处理均使用Chesapeake Technology公司的SonarWiz软件完成，数据以SEG-Y数字格式存储。