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Retrieval of orbital maneuver information of Starlink satellites from SpaceX-released ephemerides by analytical and numerical methods

Recent articles in Advances in Space Research - Sun, 03/29/2026 - 19:11

Publication date: Available online 18 March 2026

Source: Advances in Space Research

Author(s): Tian-Ren Liu, Ying-Ji Yuan, Ming-Jiang Zhang, Jian-Ning Xiong

Production of binderless bricks from Martian regolith simulants

Recent articles in Advances in Space Research - Sun, 03/29/2026 - 19:11

Publication date: Available online 18 March 2026

Source: Advances in Space Research

Author(s): Josef Řezníček, Vratislav Bednařík, Štěpán Vinter, Jaroslav Filip, Ivo Kuřitka, Pavol Šuly, Ondřej Krejčí

A study of the magnetic effects of the Equatorial Electrojet (EEJ) along the East Asian and West African sectors

Recent articles in Advances in Space Research - Sun, 03/29/2026 - 19:11

Publication date: Available online 18 March 2026

Source: Advances in Space Research

Author(s): F.O. GRODJI, H.F.M. YAO, P.O. AMAECHI, C. AMORY-MAZAUDIER, V. DOUMBIA, N. KOUASSI, A.A. KASSAMBA, Z. TUO

Climate change is altering Saharan dust—and Europe is downwind

Phys.org: Earth science - Sun, 03/29/2026 - 13:00

In recent years, residents of Spain, France and the UK have looked up to see an eerie sight: deep orange sunrises and skies thick with a yellowish haze. These hazy skies often deposit "blood rain," rust-colored precipitation that leaves a fine grit on cars and windows.

How internal waves transport energy thousands of miles across the ocean

Phys.org: Earth science - Sun, 03/29/2026 - 12:00

Both winds and tides inject energy into the ocean. Much of that energy is then transported up to thousands of miles by internal waves: large-scale underwater waves that can travel between ocean basins. Quantifying the amount of energy transported by internal waves and assessing their dynamics are difficult given their location and scale. Still, the question is important because internal wave dynamics interact with the global climate and underwater ecosystems by influencing currents, ocean mixing, and more.

North Sea wind farms may be reshaping sediment flows by 1.5 million tons a year

Phys.org: Earth science - Sat, 03/28/2026 - 16:20

Offshore wind farms are an important pillar of the European Union's strategy for renewable energy—by 2050, the EU aims to increase capacity in the North Sea more than tenfold. A new study by the Helmholtz-Zentrum Hereon shows that the expansion of wind farms can alter the natural transport and deposition of sediments on a large scale and over the long term. The German Bight is particularly affected. The researchers have published their findings in the journal Nature Communications Earth & Environment.

Alaska analysis shows continued loss of Arctic landfast sea ice

Phys.org: Earth science - Sat, 03/28/2026 - 13:00

Sea ice is sticking to Alaska's northern coast for less time each year, according to 27 years of data analyzed by University of Alaska Fairbanks scientists. Such landfast ice, which stays attached to the shoreline instead of drifting with winds and currents, also has covered less total area in recent winters.

Study explains Antarctic sea ice growth and sudden decline

Phys.org: Earth science - Sat, 03/28/2026 - 11:00

A new Stanford University study has helped solve a mystery about dramatic swings in sea ice extent around Antarctica.

Ionospheric changes immediately before the 2025 March 28 Mw7.7 Myanmar earthquake

Geophysical Journal International - Sat, 03/28/2026 - 00:00

SummaryWe studied ionospheric changes associated with the 2025 March 28 Myanmar earthquake (Mw7.7) using global navigation satellite system receivers to measure ionospheric electrons, as a part of the project to predict earthquake precursors. The total electron contents above the fault changed their trends ~36 minutes before the earthquake, with the positive anomaly reaching ~1 per cent of the background. These quantities fit well with the past ~20 cases despite relatively large day-to-day variability due to high geomagnetic activities. The positive anomaly was sandwiched by two negative anomalies to the north and the south, suggesting within-ionosphere electron transportation along geomagnetic fields possibly driven by surface positive electric charges released from the fault.

Uncertainty Estimation for Multi-Phenomenology Explosion Monitoring

Geophysical Journal International - Sat, 03/28/2026 - 00:00

SummaryWe develop and demonstrate a new paradigm for modeling prompt forensics data from potential nuclear explosions of concern. Related scenarios include nuclear terrorism, which may involve low-yield detonations. Traditional modeling appropriate for higher-yield historical nuclear testing is generalized to capture uncertainties in yields (such as when using conversion to obtain “equivalent” nuclear yields for conventional explosives in low-yield experiments) and to capture variation among source-to-sensor path effects for which no calibration data are available. Special attention is paid to quantifying these sources of uncertainty and to their formal inclusion in comprehensive yield uncertainty — uncertainty that would otherwise be underestimated and potentially lead to mistaken conclusions. For the example scenario considered, two useful stand-alone monitoring phenomenologies are based on geophysical data (from surface effects characteristics and local seismic metrics). By fusing signatures from multiple phenomenologies, the Multi-Phenomenology Explosion Monitoring (MultiPEM) framework provides improved yield characterization relative to reliance on single-phenomenology analysis alone, especially when individual sensors have complementary sensitivities to emplacement/environmental conditions.