Receivers Receivers and and

Recording SystemsRecording Systems

GeophonesGeophones

String of Geophones

3 component

Typical exploration geophone

Various casings

GeophoneGeophone

Velocity sensor

Geophone as high pass filter

Natural (Resonant) Frequency

Distortion

Recording SystemsRecording Systems

Land Recording LayoutsLand Recording Layouts

Lots of CablesLots of Cables

Telemetry RecordingTelemetry Recording

Geometrics GEODE System

HydrophoneHydrophone

Pressure sensor

““Hardware” ProcessingHardware” Processing

Common FiltersCommon Filters

Lo, Hi, Band Pass Notch

ArraysArrays

Array ResponseArray Response

Apparent Wavenumber (k = 2/)

Array: Example Array: Example

BeforeAfter

Noise TestNoise Test

Array ResponseArray Response

Source ArraySource Array

Example: New MexicoExample: New Mexico

Designing a Vib ArrayDesigning a Vib Array