Large-N devices

Manuals

Manuals for Geospace GSB -evices:

593-00250-01 | Manual: LineViewer

593-00870-01 | User Manual: ES Control

593-01650-01 | User Guide: LHR Line Health Recorder

User Manual: GEM GEospace Equipment Manager

User Manual: LHQC v.2.2 Line Health QC

Instructions

How to speed up data processing?

In order to speed up data processing of the collected Large-N data, following is needed:
For every project, a Survey geometry file is needed, in SPS 1.0, SPS 2.0 or SP1 format.

What should be the distance between devices?

It is highly recommended that the receivers are installed so, that the distance between the devices are 5 meters, or over.

How to gather data with tighter grid than 5 meters?

In that case an additional device location file is needed. The location file consists of: device serial number, line number, station number and device deployment time. We will provide you with: the Deployment time, the device serial number, example file, but the creation of the location file is based on clients notes of the measurement.

For active surveys, the following information is needed:

Source related parameters (stacks, sweep information, pilot, etc.), Trigger file configuration, Auxiliary channels configuration
File name components, Type of gather (shot, receiver or continuous), SEG type (SEGD rev 2 or 3), SEG-Y (rev 0 or 1),
Process type to be used, Record length, Stack setup, Type of correlation. Read more in GEM User Manual chapter 4.12.4.

How to get additional support?

A discussion between PI and the mobile Finnish Seismic Instrument Pool FINNSIP technicians for additional information is possible.

Videos

Instruction video GSB 3 Geospace Seismic 3-channel Recorder deployment