Near-Surface Seismic Acquisition System

The science research requirements are as follows;

·System electronics must be able to support seismic data acquisition on approximately 400 channels simultaneously at 1ms for at least 48 hours

·Must have sufficient channel memory to support seismic data acquisition on approximately 400 channels simultaneously at 1ms for at least 48 hours

The equipment comprises the following components;

·a sufficient number of24-channel seismographs (approximately 400 channels), each unit having two built-in high-speed connections to interface with other seismograph and a PC-compatible controller

·a seismic acquisition suite capable of conducting 2D and 3D seismic surveys, geophones/lines tests, real-time noise monitoring, and continuous data recording with an appropriate file structure (e.g., overlapping records)

·an appropriate acquisition computer to run seismic acquisition suite with sufficient memory (e.g., 64GB), disk space (e.g., >2TB) and an external monitor for visual QC.

·a sufficient number of 24-channel, wound wire geophone cables at 10m spacing (approximately 400 channels) with 10m lead-ins, and 20 hasps for storage ease.

·Approximately 400 individual 14Hz, 395 Ω vertical element, 70% damped geophones with a 3” spike and 1m cable lead-ins

·17 x 250m digital interface cables with kink- and abrasion-resistant jacketing to connect Seismographs

·a sufficient number of Line Tap Units (e.g. 5) and interface cables to merge separate line data streams into single stream

·a sufficient number of modular storage units each containing the equipment required for a 48-channel survey

·sufficient channel memory for simultaneous approximately 400-channel seismic data acquisition at 1ms

·a trigger cabling solution capable of detonating seismic sources at 200m

The procurement requirements have been developed by the stakeholder group, including the scientific and technical leads on the project.