نتایج جستجو برای: deep geophysical profiles

تعداد نتایج: 368889  

Journal: :IEEE Geosci. Remote Sensing Lett. 2009
Graham Quartly

A radar altimeter's normalized backscatter, σ, is used in many oceanographic applications, to infer values of wind speed, wind stress, rain rate and the presence of biogenic slicks. The waveform retracker used to estimate the key geophysical variables for the altimeters on the Jason-1 and Jason-2 satellites shows increased small-scale variability since the problem is ill-conditioned. A simple e...

Journal: :Journal of Glaciology 2022

Abstract Hercules Dome, Antarctica, has long been identified as a prospective deep ice core site due to the undisturbed internal layering, climatic setting and potential obtain proxy records from Last Interglacial (LIG) period when West Antarctic sheet may have collapsed. We performed geophysical survey using multiple ice-penetrating radar systems identify locations for at Dome. The surface top...

The radiation environment in deep space, where astronauts are behind the shelter provided by the Earth’s magnetosphere, is a major health concern. Galactic cosmic rays (GCR) and solar particle events (SPE) are two basic sources of space radiation in the solar system. The health risks of exposure to high levels of space radiation can be observed either as acute and delayed effects. Zhang et al. ...

Journal: :Physica D: Nonlinear Phenomena 2023

The complexity of real-world geophysical systems is often compounded by the fact that observed measurements depend on hidden variables. These latent variables include unresolved small scales and/or rapidly evolving processes, partially couplings, or forcings in coupled systems. This case ocean–atmosphere dynamics, for which unknown interior dynamics can affect surface observations. identificati...

Journal: :Annales Geophysicae 2021

Abstract. The concept of electromotive force appears in various electromagnetic applications geophysical and astrophysical fluids. A review the its to solar wind are discussed such as profile during shock crossings observational tests for mean-field model against data. is being recognized serving a useful tool construct more complete picture space plasma turbulence when combined with energy spe...

Journal: :Springer proceedings in earth and environmental sciences 2023

Abstract The mining of stratified ore deposits requires detailed knowledge the location orebody boundaries. In Banded Iron Formation (BIF) hosted iron located in Pilbara region Western Australia natural gamma logs are useful tool to identify stratigraphic However, manually interpreting these features is subjective and time consuming due large volume data. this study, we propose a novel approach...

Delineation of oxide and sulfide zones in mineral deposits, especially in gold deposits, is one of the most essential steps in an exploration project that has been traditionally carried out using the drilling results. Since in most mineral exploration projects there is a limited drilling dataset, application of geophysical data can reduce the error in delineation of the sulfide and oxide zones....

Journal: :Geosciences 2021

Sub-seabed gas is commonly associated with seabed depressions known as pockmarks—the main venting sites for hydrocarbon gases to enter the water column. accumulations are characterized by acoustically turbid or opaque zones in seismic reflection profiles, taking form of blankets, curtains plumes. How migration sub-seabed relates origin and distribution pockmarks nearshore fjordic settings not w...

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