We image the thermochemical structure of crust and mantle underneath North American continent by inverting recordings P-to-s (Ps) S-to-p (Sp) converted seismic body waves (receiver functions [RFs]). Through careful data selection processing, we construct a multifrequency Ps (5-, 8-, 10 -s) Sp (10- 15- s) RF set from USArray recordings. The inversion is interfaced with petrological phase equilib...

S U M M A R Y We developed an integrated technique for estimating crustal anisotropy with a horizontal axis using radial (R) and transverse (T) receiver functions. The technique includes computing three individual and one joint objective function (JOF) and a reliability analysis of the estimated anisotropy. The individual objective functions (IOFs) are designed to: (1) maximize the peak energy ...

[1] A wave equation-based poststack depth migration method is proposed to image the Earth’s internal structure using teleseismic receiver functions. By utilizing a frequency wave number domain one-way phase screen propagator for wave field extrapolation in the migration scheme, common conversion point (CCP) stacked receiver functions are backward propagated to construct a subsurface structural ...

Although originally developed for the military, the Global Positioning System (GPS) has proven invaluable for a multitude of civilian applications. Each application demands specific performance from the GPS receiver, and the associated requirements often vary widely. This paper describes the architectures and functions of civilian GPS receivers and then focuses on performance considerations. Th...

iran is situated in one of the world's seismic regions and the possibility of destructive earthquakes in most regions of the country has given great significance to recognition of iranian seismic nature from a seismic and seismotectonic standpoint. study of the crust and upper mantle velocity structure in the iranian plateau provides better understanding of its evolution and tectonic histo...

The USB-IF designed the Receiver Jitter Tolerance Test to test the quality of the USB 3.0 receiver of a system. This test uses a waveform generator/oscilloscope combination, or a data generator/analyzer to send data to the Super Speed receiver which is then looped back through the transmitter back to the instrument. The data received is compared to the data generated and the errors are counted....

A multiple-point equalization filter using the common acoustical poles of room transfer functions is proposed. The common acoustical poles correspond to the resonance frequencies, which are independent of source and receiver positions. They are estimated as common autoregressive (AR) coefficients from multiple room transfer functions. The equalization is achieved with a finite impulse response ...