Results 111 to 120 of about 2,470 (245)

An Exactly Energy-conserving Electromagnetic Particle-in-cell Method in Curvilinear Coordinates

The Astrophysical Journal Supplement Series
In this paper, we introduce and discuss an exactly energy-conserving particle-in-cell method for arbitrary curvilinear coordinates. The flexibility provided by curvilinear coordinates enables the study of plasmas in complex-shaped domains by aligning the
J. Croonen, L. Pezzini, F. Bacchini, G. Lapenta   +3 more
doaj   +1 more source

Borehole Waters From Hole U1601C (Atlantis Massif) Provide Constraints for a Deep‐Sourced Formation Water That (Could) Feed the Lost City Hydrothermal Field

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Hole U1601C, drilled during International Ocean Discovery Program (IODP) Expedition 399, reached a depth of 1,268 m below the seafloor (mbsf) in the Atlantis Massif (30°N, 42°W). This borehole represents only one of six boreholes that extends more than 700 m into oceanic rock, penetrating predominantly ultramafic lithologies, mostly composed ...
C. Geoffrey Wheat, Susan Q. Lang, Gordon Southam, Will Osborne, Ivan P. Savov, Samuele Agostini, Jordan Poitras   +6 more
wiley   +1 more source

Constraining Sources of Mid‐Pleistocene to Present Explosive Volcanism in the Gulf of Alaska Using Machine Learning and Compositional Data Analysis

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract The long‐term eruptive record of a region helps better elucidate magmatic processes at depth as well as volcanic hazards at the surface. Typically, reconstructing such records is done using proximal tephrostratigraphy and linking individual tephras to source volcanoes. These records, however, can only be accurately constructed if they are both
Jordan Lubbers, Matthew Loewen, Kristi Wallace   +2 more
wiley   +1 more source

Characteristics of Post‐Sunset Equatorial Plasma Bubble Occurrences Over Indonesia During a Geomagnetic Storm in August 2024

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract We investigated characteristics of post‐sunset equatorial plasma bubbles (EPBs) generated over Indonesia during a geomagnetic storm on 12 August 2024 using Global Navigation Satellite System and ionosonde data. During the August geomagnetic storm, EPBs were generated after sunset over the eastern part of Indonesia (∼120°–130°E) but not over ...
Takuya Sori, Prayitno Abadi, Ihsan Naufal Muafiry, Teguh Nugraha Pratama, Sri Ekawati, Dyah Rahayu Martiningrum, Noersomadi, Edy Maryadi, Febrylian Fahmi Chabibi, Michi Nishioka, Septi Perwitasari, Mamoru Yamamoto   +11 more
wiley   +1 more source

How the 29 July 2025 M8.8 Kamchatka Earthquake Shook the Ionosphere Over Japan

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract This study investigates the mid‐field (∼1,100–3,800 km) ionospheric response to the 29 July 2025 Kamchatka earthquake over Japan using multi‐instrument observations, raytracing, and numerical simulations. Total electron content (TEC) observations from GPS satellite G04 and Galileo satellite E10 show a maximum TEC perturbation of ∼0.5–0.85 TECU
R. K. Barad, E. Astafyeva, S. A. Sanchez, E. A. Kherani, I. D. Ouar, C. Maréchal   +5 more
wiley   +1 more source

Statistical Study of Energy Dissipation in Magnetic Structures During Turbulent Reconnection in the Earth's Magnetotail

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract Magnetic reconnection is a ubiquitous plasma phenomenon that plays a critical role in particle heating and energization. During reconnection, the topology of magnetic field rearranges, depositing energy into the surrounding plasma through bulk flow, thermal heating, or non‐thermal particle acceleration.
R. Wang, H. Ji, A. Robbins, K. Bergstedt, N. Ahmadi, R. Ergun, L.‐J. Chen, J. Yoo, P. Shi, Y. Doke   +9 more
wiley   +1 more source

High Latitude Thermosphere and Ionosphere Density Response to the May 2024 Geomagnetic Storm Observed by the LLITED CubeSat Mission

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract The May 2024 G5 geomagnetic storm produced significant disturbances in the ionosphere and thermosphere, particularly at high latitudes. Using high‐resolution in situ ion and neutral density measurements from the NASA Low‐Latitude Ionosphere/Thermosphere Enhancements in Density (LLITED) CubeSat at 430 km altitude, this study documents notable ...
Diana J. Swanson, James H. Clemmons, Huixin Liu, Rebecca Bishop, Shantanab Debchoudhury, Aroh Barjatya, Asti Bhatt   +6 more
wiley   +1 more source

High-energy γ-photons and pair electrons generation in polarized ultraintense laser fields. [PDF]

Sci Rep
Agarwal S, Gupta DN.
europepmc   +1 more source

Statistical Study on Pulsating Auroras and High‐Latitude Propagation of Chorus Waves Based on Conjugate Observations of Ground‐Based Imagers and Arase Satellite

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract Pulsating aurora (PsA) is one of the common diffuse auroras typically generated by ∼10 keV electron precipitation. Precipitating electrons are scattered via wave‐particle interactions with whistler‐mode chorus waves in the magnetosphere. Previous studies have observationally demonstrated that, during PsAs, highly energetic electrons with ...
Y. Ito, Y. Ogawa, M. Fukizawa, Y. Tanaka, A. Kadokura, Y. Miyoshi, K. Hosokawa, A. Shinbori, T. Hori, Y. Kasahara, S. Matsuda, F. Tsuchiya, A. Kumamoto, A. Matsuoka, M. Teramoto, K. Yamamoto, I. Shinohara   +16 more
wiley   +1 more source

Electron bunch optimization in laser wakefield acceleration through temporally asymmetric pulse shaping in ionization injection regime. [PDF]

Sci Rep
Ravina, Kim S, Gupta DN, Suk H.
europepmc   +1 more source