Results 191 to 200 of about 42,838 (280)

High‐Resolution Channel Geometry Reveals Contrasting Styles of Gravel River Adjustment

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Rivers self‐organize to convey water and sediment, giving rise to robust downstream scaling between channel geometry and drainage area, underpinning landscape evolution models. However, these relations rely on limited observations per watershed. We quantify downstream changes in channel slope and bankfull width for six gravel rivers.
Robert P. Kostynick, Colin B. Phillips, Claire C. Masteller   +2 more
wiley   +1 more source

Space weathering effects in Bennu asteroid samples. [PDF]

Nat Geosci
Keller LP, Thompson MS, Seifert LB, Melendez LE, Thomas-Keprta KL, Le L, Snead CJ, Welten KC, Nishiizumi K, Caffee MW, Masarik J, Busemann H, Krietsch D, Maden C, Rahman Z, Dukes CA, Cloutis EA, Gainsforth Z, Sandford SA, DellaGiustina DN, Connolly HC, Lauretta DS.   +21 more
europepmc   +1 more source

Quantifying High‐Frequency Migrating Tides in the Atmosphere of Mars With Observations From EMIRS, Curiosity and Perseverance

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Thermal tides are global oscillations driven by periodic solar heating that strongly influence circulation and vertical coupling in the Martian atmosphere. Previous studies have focused on the first and second migrating harmonics, while recent work has revealed higher‐frequency harmonics in surface pressure records.
Aishwarya Kumar, Scott L. England, R. John Wilson, Amanda S. Brecht   +3 more
wiley   +1 more source

Photothermal Polarimetric Nanoscopy: An Emerging Technique for Fingerprinting Minerals of Extraterrestrial Origin. [PDF]

ACS Earth Space Chem
Shay T, Hinrichs K, Pavlov SG, Stojanovic N, Weber I, Morlok A, Gensch M.   +6 more
europepmc   +1 more source

Modulation of the Mid‐Latitude Ionospheric Sporadic E Layer by the Northern Polar Vortex

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract The sporadic E (Es) layer is a prominent ionospheric irregularity mainly driven by vertical wind shear at mid‐latitudes. Hereby we statistically investigate for the first time Es responses to variations of the northern polar vortex (represented by NAM index) using long‐term ionosonde observations over Japan (44 years) and Australia (34 years).
Tomoki Maeda, Huixin Liu, Yosuke Yamazaki, Lihui Qiu   +3 more
wiley   +1 more source

Nature visible only digitally. [PDF]

Patterns (N Y)
Iba Y, Kubota A, Takeda Y, Derin MO, Ikegami S, Mutterlose J, Harada T, Takeuchi T, Tainaka K.   +8 more
europepmc   +1 more source

Experimental Mineralogy for Condensed Phase-Gas Systems and Its Application to Earth and Planetary Sciences.

Journal of the Mineralogical Society of Japan, 1992
openaire   +2 more sources

Solar‐Wind Triggering of Substorm Onset During the May 2024 Superstorm: Coordinated Global Observations and Simulations

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Substorms are often described by a loading‐unloading cycle, where onset follows gradual accumulation of solar wind magnetic flux in the magnetosphere. Yet observations indicate that intense substorms can also be directly driven, though the underlying mechanism remains unresolved.
Yong Ren, Minghui Zhu, Lei Dai, Walter Gonzalez, Shan Wang, Chi Wang, C. Philippe Escoubet, Jiaojiao Zhang, Qiugang Zong   +8 more
wiley   +1 more source

Connecting Meteorite Spectra to Lunar Surface Composition Using Hyperspectral Imaging and Machine Learning

Hesar FF, Raouf M, Chegeni A, Soltani P, Foing B, Chatzitheodoridis E, de Dood MJ, Verbeek FJ.   +7 more
europepmc   +1 more source

Fundamental constraints and questions from the study of martian meteorites and the need for returned samples. [PDF]

Proc Natl Acad Sci U S A
Udry A, Ostwald AM, Day JMD, Hallis LJ.
europepmc   +1 more source