Results 71 to 80 of about 18,921 (197)
Thermal drone observations capture fine‐scale population decline of short‐tailed shearwaters
Remote Sensing in Ecology and Conservation, Volume 11, Issue 6, Page 773-789, December 2025.Researchers used thermal drone technology to monitor short‐tailed shearwater colonies in Tasmania from 2019 to 2024, discovering a concerning 27% decline in chick numbers during this period. The study estimates that the global population of these seabirds has dropped dramatically by 41% since 1985, falling from 23 million to approximately 13.5 million ...
Jacob Virtue +4 more
wiley +1 more source
TEST DI POSIZIONAMENTO CON RICEVITORI IBRIDI GPS-GLONASS [PDF]
, 2011 In questo lavoro viene svolta un’analisi su test di posizionamento effettuati con ricevitori ibridi, per valutare l'apporto che la costellazione satellitare Glonass può dare ai rilievi NRTK (Network Real Time Kinematic) in condizioni di geometria ...
DARDANELLI, Gino
core
Equatorial Ionospheric VTEC Perturbations During the 21 June 2020 Solar Eclipse
Earth and Space Science, Volume 12, Issue 12, December 2025.Abstract The annular solar eclipse of 21 June 2020, provided a valuable opportunity to examine the ionospheric response to celestial events. This study analyzes variations in Vertical Total electron content (VTEC) over the equatorial region using data from the UQRG Global Ionospheric Map (GIM), ground‐based GPS‐TEC measurements, and equatorial ...
Atirsaw Muluye Tilahun +4 more
wiley +1 more source
U.S. Law of the Sea Cruise to Map the Foot of the Slope and 2500-m Isobath of the U.S. Arctic Ocean Margin. Cruise Report for 2008 [PDF]
, 2007 USCGC Icebreaker Healy (WAGB-20) U.S. Law of the Sea cruise to map the foot of the slope and 2500-m isobath of the US Arctic Ocean margin CRUISES HE-0805 August 14 to September 5, 2008 Barrow, AK to Barrow ...
Armstrong, Andy, Mayer, Larry A.
core +4 more sources
Reports on Geodesy and Geoinformatics, 2015 In computational tasks of satellite geodesy there is a need for transformation of coordinates between reference frames ECEF – Earth Centered, Earth Fixed and ECI – Earth Centered, Inertial.
Krzyżek Robert, Skorupa Bogdan
doaj +1 more source
Space Weather, Volume 23, Issue 12, December 2025.Abstract The Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC‐1 and COSMIC‐2) missions provide global observations of atmospheric and ionospheric conditions using Global Navigation Satellite System (GNSS) radio occultation (RO).
Victoriya V. Forsythe +7 more
wiley +1 more source
Applied Sciences, 2020 In this work, the performance of the multi-GNSS (Global Navigation Satellite System) Precise Point Positioning (PPP) technique, in static mode, is analyzed.
Antonio Angrisano +5 more
doaj +1 more source
Space Weather, Volume 23, Issue 12, December 2025.Abstract This study investigates the sensitivity of the thermosphere and ionosphere to variations in solar spectral irradiance. Using data from the SDO and SORCE missions collected between 2010 and 2018, we quantified the variability and uncertainty of solar spectral irradiance across wavelengths from 0.1 to 190 nm and developed a data‐driven method to
C.‐T. Hsu, N. M. Pedatella
wiley +1 more source
«Potok» – distributed platform for modeling digital twins of the GLONASS [PDF]
Космические аппараты и технологииThe GLONASS global navigation satellite system (GNSS) is currently at the stage of modernisation. In order to consider and select the best option for the development of the system, it is necessary to create a modelling tool that can ensure the correct ...
R. S. Kulikov +4 more
doaj
Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.Abstract In this work, we report the simultaneous emergence of the X‐pattern of equatorial ionization anomaly (EIA) in the American and Asian sectors during a geomagnetically quiet day for the first time through the Global‐scale Observations of the Limb and Disk and Global Ionosphere Specification data assimilation products.
Jianhui He +3 more
wiley +1 more source