A25 PRINCIPLES BEHIND VECTOR ACQUISITION Summary 1 The subject of vector acquisition is a new but developing topic initiated through the advances in seismic sensor technology with the introduction of digital MEMS based accelerometers that make multi-component measurement economically viable. The term vector acquisition can also be expressed as full wave-field recording. Traditionally seismic acquisition has employed pwave geophones sensing in a single axis nominally vertical. However the true earth motion is only fully described in a three dimensional space. The multiplicity of wave trains arriving at the receiver can make the local ground move in any direction. If the


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