Results 51 to 60 of about 462,957 (252)

Ionospheric Nighttime Enhancements at Low Latitudes Challenge Performance of the Global Ionospheric Maps

Remote Sensing, 2022
In this study, two ionospheric nighttime enhancement (INE) events at low latitudes are selected to investigate their spatial features through the observations from Global Navigation Satellite System (GNSS) receivers and ionosondes. For the first time, we
Yuyan Yang, Libo Liu, Xiukuan Zhao, Haiyong Xie, Yiding Chen, Huijun Le, Ruilong Zhang, M. Arslan Tariq, Wenbo Li   +8 more
doaj   +1 more source

Origin, evolution and biogeographic dynamics of the European rabbit (Oryctolagus cuniculus) in Southwestern Europe

The Anatomical Record, EarlyView.
Abstract The Pleistocene is a key period for understanding the evolutionary history and palaeobiogeography of the European rabbit (Oryctolagus cuniculus). The species was first documented in southeastern Iberia at the beginning of the Middle Pleistocene and appears to have rapidly spread throughout Southwestern Europe, where it was found in numerous ...
Maxime Pelletier
wiley   +1 more source

Summary of the Second International Planetary Dunes Workshop: Planetary Analogs — Integrating Models, Remote Sensing, and Field Data, Alamosa, Colorado, USA, May 18–21, 2010 [PDF]

, 2010
The Second International Planetary Dunes Workshop took place in Alamosa, Colorado, USA from May 18–21, 2010. The workshop brought together researchers from diverse backgrounds to foster discussion and collaboration regarding terrestrial and extra ...
Tirsch, D., Lancaster, N., Lori K. Fenton, Hayward, R.K., Titus, T.N., Bishop, Marc A., Tirsch, Daniela, Andrew Valdez, Bourke, M.C., Bristow, Charles S., Bourke, Mary C., Valdez, Andrew, Michaels, T.I., Lancaster, Nicolas, Rosalyn K. Hayward, Briony H. Horgan, Horgan, B.H., Horgan, Briony H., Bishop, M.A., Mary C. Bourke, Timothy N. Titus, Timothy I. Michaels, Hayward, Rosalyn K., Michaels, Timothy I., Charles S. Bristow, Mark A. Bishop, Bristow, Charlie S., Daniela Tirsch, Fenton, L.K., Titus, Timothy N., Nicholas Lancaster, Fenton, Lori   +31 more
core   +1 more source

Leveraging Ceres to Gain Insights into the Candidate Ocean Worlds of Umbriel and Oberon That Orbit Uranus

The Planetary Science Journal
Ceres, located in the asteroid belt, exhibits intriguing parallels with two of the large Uranian satellites: Umbriel and Oberon. These similarities include size, bulk compositions, and dominantly radiogenic internal heat sources.
Jennifer E. C. Scully, C. Adeene Denton, Julie C. Castillo-Rogez, Michael M. Sori, Erin J. Leonard, Chloe Beddingfield, Richard Cartwright, Catherine M. Elder, Karl L. Mitchell, Tom A. Nordheim   +9 more
doaj   +1 more source

Preliminary results: paleomagnetism of mesozoic units from northwest Sonora and their tectonic implication for northern México

Geofísica Internacional, 1981
Los resultados preliminares de una investigación paleomagnética de estratos miogeosinclinales Triásico Superior-Jurásico Inferior de la Formación Antimonio (localizados en el noroeste de Sonora) permiten determinar una posición polar paleomagnética de 74.
K. K. Cohen, T. H. Anderson, V. A. Schmidt   +2 more
doaj   +1 more source

An unusual titanosaur axis from the Upper Cretaceous of Brazil and its significance for sauropod anatomy and systematics

The Anatomical Record, EarlyView.
Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro, Jeffrey A. Wilson Mantilla, Jhonata H. A. Martins, Fabiano V. Iori, Leonardo S. Paschoa, Alberto B. Carvalho, Joseli M. Piranha, Hussam Zaher   +7 more
wiley   +1 more source

The Geology of a Small Main-belt S-class Binary Asteroid System: Dinkinesh and Its Contact Binary Satellite Selam as Observed by the Lucy Mission

The Planetary Science Journal
The Lucy spacecraft flew past the ∼738 m diameter, S-class main-belt asteroid (152830) Dinkinesh on 2023 November 1, revealing a satellite named Selam. We used images acquired during the flyby to evaluate surface features on both Dinkinesh and Selam.
E. B. Bierhaus, S. Marchi, S. J. Robbins, S. Mottola, W. F. Bottke, K. Noll, J. F. Bell III, J. M. Sunshine, J. Spencer, D. Britt, H. Levison, F. Preusker, C. Howett, M. Hirabayshi   +13 more
doaj   +1 more source

Geology of Tolstoj quadrangle (H08), Mercury

Journal of Maps
Tolstoj quadrangle (H08) is located in the equatorial area of Mercury, between 22.5°N and 22.5°S and 144° and 216°E. Using the NASA/MESSENGER data, we compiled a geological map of the quadrangle at a scale of 1:3.000.000. The main basemap we used was the
L. Giacomini, L. Guzzetta, V. Galluzzi, L. Ferranti, P. Palumbo   +4 more
doaj   +1 more source

A text for planetary geology

Eos, Transactions American Geophysical Union, 1992
In this article I review my findings from a search for a suitable text to use in an introductory undergraduate course in planetary geology for nonscience students. I hope to elicit comments from others with a similar need.The books from which I have drawn material for my course are listed below.
openaire   +1 more source

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

The Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom, Paul Gignac, Daniel E. Barta, Ryan N. Felice, Eric Snively   +4 more
wiley   +1 more source