Results 131 to 140 of about 10,691 (260)
Breakup of meteoroids in the Venusian atmosphere and its effects on crater formation [PDF]
Early results of the Magellan mission to Venus show that almost all of the observed impact craters appear to be unaffected by erosion, burial, and tectonic deformation.
Herrick, R. R., Phillips, Roger J.
core +1 more source
Formation of the Leonid meteor stream and storm [PDF]
It is well known that some meteor showers display a very high level of activity at certain times, the most famous being the Leonid shower with very spectacular displays at roughly 33 year intervals.
Williams, I. P., Wu, Zidian
core +1 more source
Bio‐mediated cementation of supratidal beach sediments associated with groundwater springs
Sedimentology, EarlyView.ABSTRACT The formation of beachrock, sensu stricto, via carbonate precipitation in the intertidal zone is widespread throughout the tropics and subtropics. While cementation of supratidal beach sediments has also been noted in several locations, it has received much less attention.
Thomas William Garner +1 more
wiley +1 more source
About distribution and origin of the peculiar group of sporadic meteors [PDF]
A particular group of sporadic meteors are picked out from analysis of meteor catalogs derived from results of radar observations in Mogadisho and Kharkov.
Andreev, V. V.
core +1 more source
Sedimentology, EarlyView.ABSTRACT The Paleoarchean Antarctic Creek Member of the Mount Ada Basalt, Eastern Pilbara Terrane, Western Australia, includes beds of jasper and white chert composed of sand‐sized silica granules that often contain or are mixed with silt‐sized particles of haematite.
Donald R. Lowe, Gary R. Byerly
wiley +1 more source
Natural and Anthropogenic Sources of Seismic, Hydroacoustic, and Infrasonic Waves: Waveforms and Spectral Characteristics (and Their Applicability for Sensor Calibration). [PDF]
Surv Geophys, 2022 Schwardt M +4 more
europepmc +1 more source
Terra Nova, EarlyView.ABSTRACT Annual tree‐ring oxygen‐isotope values were measured from sections of two fossil logs of Picea mariana (black spruce) recovered from last glacial maximum proglacial sediment in Illinois, USA. Collectively, the specimens date from ca. 25,130 to 24,720 cal years BP.
Dana M. Labotka +2 more
wiley +1 more source
Meteoroid Impacts as a Source of Bennu's Particle Ejection Events. [PDF]
J Geophys Res Planets, 2020 Bottke WF +10 more
europepmc +1 more source
Finding Stars: Mapping the Geography of the World's Scientific Elites
Transactions of the Institute of British Geographers, EarlyView.Short Abstract Scientific excellence is clustering ever more tightly in a few ‘superstar’ cities. Four—New York, Boston, London and the San Francisco Bay Area—now host 12% of the world's top scientists. In contrast, the Global South remains largely absent, with the notable exception of Beijing's dramatic rise.
Andrés Rodríguez‐Pose +2 more
wiley +1 more source
The Earth's Greatest Porous Media
Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.Abstract How deeply does modern meteoric water circulate into the continental crust? How deep is the Earth's Critical Zone (CZ), the top layer of the continental lithosphere that co‐evolves with the atmosphere, hydrosphere, and biosphere, extending from vegetation canopy down to fresh bedrock and the base of active groundwater circulation?
Ying Fan +3 more
wiley +1 more source