Results 91 to 100 of about 83,591 (207)

Outcrop and subsurface characterisation of a mixed tidal and wave‐influenced coastline (Triassic Red Beds, SE Spain)

Sedimentology, Volume 73, Issue 6, Page 2381-2416, October 2026.
ABSTRACT Paralic depositional systems are complex and heterogeneous sedimentary environments, presenting challenges for predicting reservoir architecture and connectivity. Their stratigraphic and facies variability arises from the dynamic interplay between fluvial, tidal and wave processes, and their sensitivity to sea‐level fluctuations, sediment ...
Luis Miguel Yeste, Marc Gil‐Ortiz, Neil David McDougall, Patricia Cabello, César Viseras   +4 more
wiley   +1 more source

Crustal Shear‐Wave Velocity and Azimuthal Anisotropy Imaging Reveals the Merapi‐Merbabu‐Telomoyo Volcanic Chain, Central Java

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract We present new results from ambient noise tomography and azimuthal anisotropy analysis of the DOMERAPI data set to investigate crustal structure beneath the Merapi‐Merbabu‐Telomoyo region in central Java. The 3D shear‐wave velocity (Vs) model reveals a prominent high‐Vs anomaly extending from south of Merapi through Merbabu to Telomoyo ...
Iqwal Ramadhan, Sri Widiyantoro, Zulfakriza, Jean‐Philippe Metaxian, Nicholas Rawlinson, Jean‐Paul Montagner, Tedi Yudistira   +6 more
wiley   +1 more source

Association of Picket‐Fence With Auroral Continuum Emissions

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract We present observations of aurora‐like “picket‐fence” emissions occurring simultaneously with broad‐band auroral continuum emission structures. The continuum structures exhibit spectral properties similar to the Strong Thermal Emission Velocity Enhancement (STEVE), but appear at higher latitudes, alongside the aurora.
J. Houghton, E. Spanswick, J. Liang, K. Davidson, B. Gallardo‐Lacourt, Y. Nishimura   +5 more
wiley   +1 more source

Removing the Azimuth Ambiguities of Point Targets in Synthetic Aperture Radar Images.

, 1992
This paper proposes a method for removing the azimuth ambiguities of point targets in SAR images. The basic idea is to generate a two dimensional reference function for the SAR processing which provides, in addition to the matched filtering for the ...
Moreira, A.
core  

Reconsideration of Ambiguities in Quad-Pol SAR [PDF]

, 2016
Merging the complex signals available from both cross-polarized (cross-pol) channels of a quad-polarimetric (quad-pol) synthetic aperture radar (SAR) may lead not only to a 3-dB gain in the signal-to-noise ratio (SNR), but also to a remarkable ...
Villano, Michelangelo, Moreira, Alberto, Krieger, Gerhard   +2 more
core  

Simulating Bouncing Packets Driven by Ducted Lightning‐Generated Whistlers: Comparison With SAMPEX Observations

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Bouncing packets are quasi‐periodic microbursts separated by the electron bounce period. Solar Anomalous and Magnetospheric Particle Explorer observations revealed relativistic (>1 MeV) inner‐belt bouncing packets with “crown,” “decaying,” and “flat” envelopes.
L. Gan, W. Li, Q. Ma, L. Blum, D. Miller III., X. Li   +5 more
wiley   +1 more source

Ambiguity Analysis and Resolution for Phase-Based 3D Source Localization under Given UCA

International Journal of Antennas and Propagation, 2019
Under uniform circular array, by employing some algebraic schemes to exploit the phase information of receiving data and further estimate the source’s three-dimensional (3D) parameters (azimuth angle, elevation angle, and range), a series of novel phase ...
Zhen Liu, Xin Chen, Zhenhua Wei, Tianpeng Liu, Linlin Li, Bo Peng   +5 more
doaj   +1 more source

Early Eocene Compressional Deformation in the Northeastern Tibetan Plateau Recorded by Magnetic Fabrics of the Longzhong Basin

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Intracontinental deformation records how early Eocene India–Asia collisional stress propagated into continental interiors. How rapidly compression reached the far field, and whether coeval Paleo‐Pacific slab dynamics contributed, remain debated. The Longzhong Basin, ∼1,900 km north of the collisional zone, provides a key test.
Zhantao Feng, Niels Meijer, Weilin Zhang, Guillaume Dupont‐Nivet, Wanlong Xu, Tao Zhang, Jinbo Zan, Yibo Yang, Xiaomin Fang   +8 more
wiley   +1 more source

Ultra-Wide Swath SAR Imaging With Continuous PRF Variation [PDF]

, 2010
Innovative multi-channel synthetic aperture radar (SAR) concepts enable high-resolution wide-swath imaging, but the antenna length typically restricts the achievable swath width.
Gebert, Nicolas, Krieger, Gerhard
core  

Listening to Tsunami Waves Induced by Glacier Calving

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Processes at the ice–ocean interface play a central role in regulating the stability of marine‐terminating glaciers and ice sheets and drive ocean freshening and mixing. Iceberg calving—a mechanical loss of ice—generates ocean waves and promotes water‐mass exchange in glacierized bays.
O. Glowacki, M. D. Stokes, G. B. Deane
wiley   +1 more source