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Publication date: June 2026

Source: Journal of Atmospheric and Solar-Terrestrial Physics, Volume 283

Author(s): Wanyi Zhang, Haibo Zou, Jing Zheng, Jie Yu

Publication date: June 2026

Source: Journal of Atmospheric and Solar-Terrestrial Physics, Volume 283

Author(s): M.E. Gokul, Sunil Kumar Katiyar

Publication date: June 2026

Source: Journal of Atmospheric and Solar-Terrestrial Physics, Volume 283

Author(s): Shengyue Ji, Jing Wang, Duojie Weng, Yang Yang, Wu Chen, Kaifei He, Zhenjie Wang

Publication date: June 2026

Source: Journal of Atmospheric and Solar-Terrestrial Physics, Volume 283

Author(s): Faezeh Borhani, Seyed Amirsaleh Mousavi, Amir Houshang Ehsani, Mohammad Hashemzadeh

Publication date: June 2026

Source: Journal of Atmospheric and Solar-Terrestrial Physics, Volume 283

Author(s): Yushau Muhammad Sulaiman, Daniel Okoh, Benjamin Wisdom Joshua, Mustapha Abbas

Publication date: 15 June 2026

Source: Advances in Space Research, Volume 77, Issue 12

Author(s): Ruei-Yu Hong, Tzu-Yi Lien, Ta-Kang Yeh, Ya-Ting Tsai, Pao-Liang Chang

Publication date: 15 June 2026

Source: Advances in Space Research, Volume 77, Issue 12

Author(s): Zihao Pang, Qingjun Yang, Yu Zhang, Zheng Wang, Qingbo Yu, Jing Wang, Hua Yang, Zhiyun Lai

Publication date: 15 June 2026

Source: Advances in Space Research, Volume 77, Issue 12

Author(s): Xiaoxing He, Yu Zhou, Jun Li, Gaël Kermarrec, Rui Fernandes, Jean-Philippe Montillet, Shuangcheng Zhang, Shunqiang Hu

Publication date: 15 June 2026

Source: Advances in Space Research, Volume 77, Issue 12

Author(s): Zheng Li, Fei Guo, Xiaohong Zhang, Wentao Yang, Yifan Zhu, Zhiyu Zhang, Peng Chen, Hang Liu, Xiaoyan Song

Publication date: 15 June 2026

Source: Advances in Space Research, Volume 77, Issue 12

Author(s): Beiwen Xu, Xiaodong Chen, Meng Yang, Mingzhi Sun, Wei Feng, Min Zhong

Publication date: 15 June 2026

Source: Advances in Space Research, Volume 77, Issue 12

Author(s): Da Xu, Hongqing Li, Yongchun Wang, Dong Huang, Han Zhao, Jiageng Chi, Qiong Wu

Publication date: 15 June 2026

Source: Advances in Space Research, Volume 77, Issue 12

Author(s): Jiangbo Chai, Qijin Chen, Qusen Chen, Zhao Tan, Xiaoji Niu

Publication date: 15 June 2026

Source: Advances in Space Research, Volume 77, Issue 12

Author(s): Jin Sha, Xiuqing Hu, Bin Yang, Xu Huang, Shuang Li

Researchers at the Leibniz Centre for Agricultural Landscape Research have investigated how water from streams can be stored in the aquifer during wet periods. Using an area in the lower Spree catchment in Brandenburg as an example, the team used a computer model to show that naturally occurring small basins in the landscape could absorb excess stream water, allowing it to seep slowly into the ground and subsequently stabilize groundwater and connected surface water bodies. In the calculations, the groundwater level rose locally by up to 2 meters (6.6 feet). Water flow in connected streams could be increased by up to 15%. The study was published in the Journal of Hydrology: Regional Studies.

AbstractThe Poisson equation governing a planet’s gravitational field is posed on the unbounded domain, $\mathbb {R}^3$, whereas finite-element computations require bounded meshes. We implement and compare three strategies for handling the infinite exterior in the finite-element method: (i) naive domain truncation; (ii) Dirichlet-to-Neumann (DtN) map on a truncated boundary; (iii) multipole expansion on a truncated boundary. While all these methods are known within the geophysical literature, we discuss their parallel implementations within modern open-source finite-element codes, focusing specifically on the widely-used MFEM package. We consider both calculating the gravitational potential for a static density structure and computing the linearised perturbation to the potential caused by a displacement field—a necessary step for coupling self-gravitation into planetary dynamics. In contrast to some earlier studies, we find that the domain truncation method can provide accurate solutions at an acceptable cost, with suitable coarsening of the mesh within the exterior domain. Nevertheless, the DtN and multipole methods provide superior accuracy at a lower cost within large-scale parallel geophysical simulations despite their need for non-local communication associated with spherical harmonic expansions. The DtN method, in particular, admits an efficient parallel implementation based on an MPI-communicator limited to processors that contain part of the mesh’s outer boundary. A series of further illustrative calculations are provided to show the potential of the DtN and multipole methods within realistic geophysical modelling.

SUMMARYNatural faults commonly contain fluid-saturated gouge layers, in which fluid injection can modify pore pressure and porosity evolution, thereby affecting slip stability and induced seismicity. Here we develop a spring-slider model based on rate-and-state friction (RSF) to investigate fault slip evolution under dry, fluid-saturated, and fluid injection conditions. Our model incorporates gouge dilatancy/compaction and fluid-related pore pressure effects. Our results show pronounced differences in the onset time of the first dynamic instability and the peak slip rate among these cases. Compared to the dry case, fluid saturation without injection delays instability and slightly lowers the peak slip rate, whereas rapid injection-induced pressurization triggers earlier dynamic slip and higher peak slip rates. Without injection, increasing the dilatancy coefficient systematically delays instability. Under rapid injection, however, the onset time becomes much less sensitive to dilatancy, indicating a gradual transition from a dilatancy-influenced to an injection-dominated nucleation regime as the injection-dilatancy competition number increases. Linear stability analysis further suggests that fault stability can be characterized by a generalized critical stiffness that combines the effects of effective normal stress, pressurization rate, and dilatancy/compaction feedback. These results indicate that fluid effects on fault rupture arise from the competition between stabilizing dilatancy hardening and destabilizing time-dependent pressurization, highlighting that injection-induced seismicity can be understood as an injection-rate-driven stability problem. Our findings provide a physical framework for understanding the transition from dilatancy-sensitive to injection-controlled fault slip within the explored net dilatant regime under different fluid environments.

Most people have experienced a heat wave on land. But heat waves can strike in the ocean too. And as the planet continues to warm, marine heat waves are growing longer and deadlier, hurting the seafood supply that billions of people worldwide rely on for their food and livelihoods.

During an abrupt global cold snap nearly 13,000 years ago, the Gulf Stream ocean current shifted farther north, temporarily disrupting eastern Canada's oceanic ecosystems, a process that could happen again as the climate changes, a new study by UCL researchers finds.

Hilly and mountainous landscapes have a much greater ability to store carbon in the soil than previously thought, according to a new study co-led by scientists at the University of Oregon.

The temperature of rivers is something most people think about only if they plan to go swimming, kayaking or spend a day fishing. Few consider how it could potentially affect their electricity bill.