Results 181 to 190 of about 111,323 (332)
Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.Abstract The melting of glaciers by ocean waters along the ice sheet periphery is a major physical process driving glacier evolution in a changing climate. Using a fiber‐optic‐tethered Grounding line Remote Operated Vehicle, we explore the ice shelf cavity of Petermann Glacier, in Northwestern Greenland, with an interferometric multibeam sonar ...
E. Rignot +4 more
wiley +1 more source
Mass-Market Receiver for Static Positioning: Tests and Statistical Analyses [PDF]
, 2011 Nowadays, there are several low cost GPS receivers able to provide both pseudorange and carrier phase measurements in the L1band, that allow to have good realtime performances in outdoor condition.
Cina, Alberto, Marucco, G., Piras, Marco
core
Remote Sensing of Discharge Ratios at River Channel Bifurcations
Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.Abstract River channel bifurcations are crucial for distributing water and sediment on floodplains and deltas, but estimating discharge ratios between branches remains challenging. Using satellite imagery and in‐situ discharge data, we demonstrate that bifurcate channel widths can estimate discharge ratios at 23 of 27 bifurcations in 11 rivers ...
Bo Wang, Laurence C. Smith
wiley +1 more source
A Statistical Study of the Decreased TEC Region During Summer at Northern High Latitudes
Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.Abstract Based on the vertical Total Electron Content (TEC) data observed by the Global Navigation Satellite System in the northern hemisphere, a large area of low plasma density during summer at high latitudes, termed decreased TEC region, was investigated statistically between 2014 and 2024.
Jian‐ping Wang +6 more
wiley +1 more source
Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.Abstract Numerous studies demonstrated a huge potential for ionospheric total electron content (TEC) measurements to be included in earthquake and tsunami risk assessments. However, up to now, only a few methodologies or tools can be used in near‐real‐time (NRT) for these purposes.
S. A. Sanchez +3 more
wiley +1 more source
Foundations of GNSS Spoofing Detection and Mitigation with Distributed GNSS SDR Receiver
TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, 2018 GNSS spoofing is an intentional and malicious action aimed at degrading and suppressing GNSS Positioning, Navigation, and Timing (PNT) services. Since it affects data and information segment of GNSS, it is considered a GNSS information (cyber-) security attack.
openaire +4 more sources
River Floods Under Wetter Antecedent Conditions Deliver Coarser Sediment to the Coast
Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.Abstract Increasing hydrologic volatility—more extreme rain, and larger variations between wet and dry years—has become apparent in some regions, but few data exist to determine how intensifying hydrologic extremes affect sedimentary systems. Using uniquely high‐resolution records of fluvial suspended sediment and coastal morphology, we quantify ...
Amy E. East +6 more
wiley +1 more source
Advanced Engineering Materials, Volume 27, Issue 7, April 2025.In this study, the effect of specific ball‐milling energy (SBME) on the mechanical and corrosion properties of graphene nanoplatelets (GNPs) Zn matrix composites is presented. GNPs are uniformly dispersed in the Zn powder mixtures at the optimal SBME of 32.82 kJ g−1.
Humayun Kabir +3 more
wiley +1 more source
GNSS and DGNSS Spoofing Detection
Ural Radio Engineering Journal, 2017 One of the main problems of modern navigation both manned and unmanned transport systems is a problem of transport safety. To improve the accuracy of transport positioning used Differential GNSS technology, which is based on setting a fixed referent station with a known position XYZ.
openaire +4 more sources