Results 11 to 20 of about 1,062 (188)

Global Warming and Mass Extinctions Associated With Large Igneous Province Volcanism

open access: yesGeophysical Monograph Series, Page 83-102., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
David P. G. Bond, Yadong Sun
wiley  

+2 more sources

Improving the Vertical Modeling of Tropospheric Delay

open access: yesGeophysical Research Letters, 2022
AbstractAccurate tropospheric delays from Numerical Weather Models (NWM) are an important input to space geodetic techniques, especially for precise real‐time Global Navigation Satellite Systems, which are indispensable to earthquake and tsunami early warning systems as well as weather forecasting.
Wang, Jungang   +12 more
openaire   +4 more sources

A Two-step Estimation Method of Troposphere Delay with Consideration of Mapping Function Errors [PDF]

open access: yesJournal of Geodesy and Geoinformation Science, 2020
Mapping function errors are usually not taken into consideration, when space geodetic data observed by VLBI, GNSS and some other techniques are utilized to estimate troposphere delay, which could, however, probably bring non-ignorable errors to solutions.
Haopeng FAN,Zhongmiao SUN,Liping ZHANG,Xiaogang LIU
doaj   +1 more source

Tropospheric Delay Calibrations for VERA [PDF]

open access: yesPublications of the Astronomical Society of Japan, 2008
Abstract We present techniques for the tropospheric delay calibration, which is the key to increasing the accuracy of the phase-referencing astrometry with Very Long Baseline Interferometry (VLBI). We study three methods, and make a comparison of these methods to discuss the accuracy in calibration.
Mareki Honma   +2 more
openaire   +1 more source

Zenith Wet Delay (ZWD) Seasonal Correlation with Rainfall in Cikapundung River Discharge, North Bandung Region, Indonesia [PDF]

open access: yesE3S Web of Conferences, 2019
In a GPS survey study, the biases produced by the ionosphere and troposphere layers are known as ionospheric biases and troposphere bias. The distance deviation due to the slowing travel time of GPS signals in troposphere is commonly referred to as ...
Kuntjoro Wedyanto   +4 more
doaj   +1 more source

Tropospheric Delay Model Based on VMF and ERA5 Reanalysis Data

open access: yesApplied Sciences, 2023
The global tropospheric zenith delay grid products of VMF1 and VMF3 (Vienna mapping functions) with different resolutions are used to calculate the tropospheric zenith delay of eight IGS (International GNSS Service) stations in China, and the accuracy of
Mengtao Zhang   +4 more
doaj   +1 more source

USING GENERATIVE ADVERSARIAL NETWORKS FOR EXTRACTION OF INSAR SIGNALS FROM LARGE-SCALE SENTINEL-1 INTERFEROGRAMS BY IMPROVING TROPOSPHERIC NOISE CORRECTION [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
Spatiotemporal variations of pressure, temperature, water vapour content in the atmosphere lead to significant delays in interferometric synthetic aperture radar (InSAR) measurements of deformations in the ground.
B. Ghosh   +4 more
doaj   +1 more source

Impact of Tropospheric Delay Gradients on Total Tropospheric Delay and Precise Point Positioning

open access: yesInternational Journal of Geosciences, 2016
GPS signals are electromagnetic waves that are affected by the Earth’s atmosphere. The Earth’s atmosphere can be categorized, according to its effect on GPS signals, into the ionosphere (ionospheric delay) and neutral atmosphere (tropospheric delay).
Mohamed Elsobeiey, Mohamed El-Diasty
openaire   +2 more sources

The Numerical Simulation of the Atmosphere Delays Impact on Radar Measurement in Aviation

open access: yesCommunications, 2019
The article presents numerical simulations with regard to determining the impact of the ionospheric and tropospheric delays on a radar-aircraft slant distance measurement.
Kamil Krasuski, Artur Gos
doaj   +1 more source

Background Tropospheric Delay in Geosynchronous Synthetic Aperture Radar [PDF]

open access: yesRemote Sensing, 2020
Spaceborne synthetic aperture radar (SAR) has been treated as a weather independent system for a long time. However, with the development of advanced SAR configurations, e.g., high resolution, bistatic, geosynchronous (GEO), the influence of tropospheric propagation error, which strongly depends on the weather, has begun to receive attention.
Dexin Li   +4 more
openaire   +2 more sources

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