We have observed that Vibroseis wavelets behave very much as if they are minimum phase. This was discovered by applying minimum-phase Wiener deconvolution to the separated vibroseis VSP downgoing waves and observing that the result is effectively a band-limited spike. Motivated by this finding, we simulated a synthetic nonstationary vibroseis wavelet in a constant-Q medium by nonstationary conv...

The most commonly used deconvolution (Decon) method is based on minimum-phase assumption for the wavelet which is often not valid. Explosive energy source is close to minimum-phase which makes seismic data with explosive somewhat amenable to predictive Decon though the result is imperfect in phase. Decon of Vibroseis data is more problematic because the wavelet in a correlated Vibroseis trace i...

Vibroseis is a method that imparts coded seismic energy into the ground. The energy is recorded with geophones and then processed using the known (coded) input signal. The resulting time-domain representation of vibroseis data is an impulsive wavetrain with wavelet properties consistent with the coded input signal convolved with the earth’s reflectivity series. Historically vibratory seismic su...

Pygmy rabbit behavior and above ground burrow characteristics were monitored during seismic exploration in northern Utah in the fall of 2008. Burrow entrance characteristics (height and width) were evaluated at distances up to 250 m from the geophone line before and after the seismic survey. Burrow heights after the seismic survey were significantly lower than pre-treatment measurements 25m fro...

Vibroseis trucks are in danger of rollover during the steering process, which severely threatens safety drivers and equipment. Therefore, it is important to examine approaches increase anti-rollover ability vibroseis trucks. According structural characteristics working field truck, an analysis influence different factors on its stability was carried out. Then, a warning index system were establ...

Knowledge of subsurface material response to seismic waves is important in developing a site-response model. Seismic velocities give insight into precautions that should be taken in anticipation of an earthquake. The method of fixed bandwidth extended Vibroseis correlation was used to extract reflections deeper than conventionally accomplished with only a 2-second listen time. A method to accur...