[1] Shipboard radiosonde measurements revealed a persistent temperature inversion layer with a thickness of 200 m at 12–13 km in a nonconvective region over the tropical eastern Pacific, along 2 N, in September 1999. Simultaneous relative humidity measurements indicated that the thin inversion layer was located at the top of a very wet layer with a thickness of 3–4 km, which was found to origin...

This paper addresses three issues in the field of ad hoc network capacity: the impact of i) channel fading, ii) channel inversion power control, and iii) threshold–based scheduling on capacity. Channel inversion and threshold scheduling may be viewed as simple ways to exploit channel state information (CSI) without requiring cooperation across transmitters. We use the transmission capacity (TC)...

Block matrices associated with discrete Trigonometric transforms (DTT’s) arise in the mathematical modelling of several applications of wave propagation theory including discretizations of scatterers and radiators with the Method of Moments, the Boundary Element Method, and the Method of Auxiliary Sources. The DTT’s are represented by the Fourier, Hartley, Cosine, and Sine matrices, which are u...

The recent development of satellite observations of limb scattered sunlight at optical wavelengths has afforded a new opportunity to measure the vertical structure of atmospheric composition from the upper troposphere to the mesosphere, on a global scale. The determination of profiles of atmospheric composition from observed limb radiance profiles requires two elements, a forward radiative tran...

We investigate the effects of mislocated earthquakes on the velocity model obtained in tomographic inversions for mantle structure and the ability of simultaneous and progressive inversion techniques to correct earthquake mislocations and produce an accurate velocity model. We solve a system of tomographic travel time equations in three ways: (a) directly, neglecting source terms, (b) simultane...

Channel sand acts as stratigraphic trap for hydrocarbon accumulation in many parts of the world. Delineation of this type of reservoir is crucial as channel sand may be scarce and inaccurate location of the drilling wells could lose a huge currency. To differentiate channel sand from the host rocks, attributes such as P and S wave velocity ratio plays a vital role in the study area. The velocit...

The Multi-Instrument Data Analysis System (MIDAS) algorithm is a spatial and temporal imaging program for the atmosphere and ionosphere. This analysis algorithm can routinely use dual-frequency ground-based observations from the GPS satellites to produce four-dimensional images of electron concentration over very large geographical regions (potentially globally). MIDAS also has the facility to ...

[1] We present a method for 3‐D gravity inversion designed to obtain density contrast models described by subhorizontal layers limited by irregular discontinuity interfaces and models constituted by shallow basins with light infill. It is based on a previously published inversion method that provides, in a nearly automatic approach, the 3‐D geometry of isolated anomalous bodies. The basic adjus...