Computational systems and methods for randomizing the order in which multiple sources
are fired in simultaneous source acquisition are described. In one aspect, pseudo-randomly …

Subsurface electromagnetic (EM) methods are applied to obtain underground information
that is not available from surface observations. Subsurface EM methods include a variety of …

At least some of the exemplary embodiments are a method. The method includes obtaining,
at an underwater imaging device, a stream of images of geophysical surveying equip ment …

A method of processing electromagnetic signal data includes: disposing a downhole tool in
a borehole in an earth formation, the downhole tool including at least one electromagnetic …

A sonic logging method is provided that transmits acoustic signals using a high order
acoustic source and processes waveform data to identify a set of arrival events and time …

This disclosure presents methods and systems for deblending blended seismic data
obtained during simultaneous shooting acquisition into deblended seismic data gathers …

This chapter is a review of some of the usual geophysical survey techniques applied in the
assessment of civil engineering structures and infrastructures. The different techniques are …

Electromagnetic induction imaging has wide potential application in the disciplines of
medicine, security, industry, geophysics and scientific research in general. The present …

A sensor streamer drag body system. At least some of the example embodiments include a
system having a sensor streamer towable behind a vessel in a body of water, the sensor …

We report methane concentrations in the bottom water layer and the upper layer of bottom
sediments and the results of acoustic explorations of methane seeps on the shelf bordering …