Results 41 to 50 of about 1,522 (283)

A comparison of automated approaches to extracting englacial-layer geometry from radar data across ice sheets

Annals of Glaciology, 2020
Radar surveys across ice sheets typically measure numerous englacial layers that can often be regarded as isochrones. Such layers are valuable for extrapolating age–depth relationships away from ice-core locations, reconstructing palaeoaccumulation ...
Richard Delf, Dustin M. Schroeder, Andrew Curtis, Antonios Giannopoulos, Robert G. Bingham   +4 more
doaj   +1 more source

Radio-Echo Sounding: Glaciological Interpretations and Applications [PDF]

Journal of Glaciology, 1975
Abstract After a brief review of factors relevant to the propagation of radio waves in ice, problems of profiling the upper and bedrock surfaces of ice sheets are considered. These include deconvolution of echo traces and accurate navigation.
openaire   +1 more source

Layer optimized SAR processing and slope estimation in radar sounder data

Journal of Glaciology, 2019
Englacial layers in Antarctica and Greenland are indicators of the dynamic, rheological and subglacial configuration of the ice sheets. Airborne radar sounder data is the primary remote sensing solution for directly observing englacial layers and ...
Davide Castelletti, Dustin M. Schroeder, Elisa Mantelli, Andrew Hilger   +3 more
doaj   +1 more source

Radio-echo sounding isochrone depths in the East Antarctic Ice Sheet

, 2018
Radio-echo sounding isochrone depths in the East Antarctic Ice ...
Creyts, Timothy T, Timothy T Creyts (7885163), Winter, Anna, Anna Winter (7885160), Daniel Steinhage (6969563), Olaf Eisen (6977588), Steinhage, Daniel, Eisen, Olaf   +7 more
core   +1 more source

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

FEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point, Wafaa Achache, Janïs Laudouze, Eliana Sepulveda Ramos, Mickaël Maziero, Céline Crauste, Stéphane Canaan, Pierre Santucci   +7 more
wiley   +1 more source

Statistical Method of Radio-Echo Sounding Temperate Mountain Glaciers and Portable Equipment for That

, 1975
Field experimental data show the possibility of using standard radio-echo sounding equipment of relatively low power to sound through a temperate mountain glacier.
L. A. Suchanov
core   +2 more sources

Dielectric properties of soils and assessment of their hydrothermal state under snow cover based on radio-echo sounding data

Лëд и снег, 2022
Snow cover significantly affects the thermal regime of the underlying soils, and its assessment and monitoring are an urgent task of remote sensing studies.
Yu. Ya. Macheret, A. V. Sosnovsky, A. F. Glazovsky   +2 more
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Surface Clutter Suppression Techniques for Ice Sounding Radars: Analysis of Airborne Data [PDF]

, 2008
For the ice sounding of Antarctica from space, a P-band radar at 435 MHz is the only option which complies with present ITU regulations. At this frequency the ice surface cannot be considered smooth, leading to high ambiguous returns.
Hélière, Florence, Prats, Pau, Scheiber, Rolf   +2 more
core