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SummaryThis study investigates the complex tectonic interactions and crustal deformation within the Weihe Basin and its surrounding regions, encompassing the northeastern Tibetan Plateau, Ordos Craton, and Qinling Orogenic Belt. By conducting a detailed analysis of GNSS data and employing a refined tectonic model, we explore relative motion patterns and fault activities in the area. Our findings highlight nuanced movement patterns, with a clockwise rotation observed in the western and central parts of basin, contrasting with an anticlockwise rotation in the eastern part. Secondary block motion decreases from west to east, with the western region showing southeastward motion and the eastern region exhibiting subtle eastward deflection. Fault activities within the Weihe Basin generally feature low slip rates, often below 1 mm/a. Intriguingly, faults in the northern basin predominantly exhibit dextral and extensional movement, while those in the southern region display sinistral and compressive movement. The Weihe fault is identified as a critical boundary between the Ordos block and the Qinling Orogenic Belt. This study offers valuable insights into the tectonic complexities of the Weihe Basin, enhancing our understanding of its kinematic behavior.

Heat waves and cold spells are part of life on the Great Lakes. But new research from the University of Michigan shows that is true today in a fundamentally different way than it was even 30 years ago.

A new study has revealed for the first time that ancient carbon, stored in landscapes for thousands of years or more, can find its way back to the atmosphere as CO₂ is released from the surfaces of rivers.

Hot air holds more moisture. That's why you can blow your hair dry even after a steamy shower. It's also what dumps rain in the tropics and sucks water from desert soils.

Nitrates in the atmosphere reduce air quality and play an important role in climate change. An international team led by Hokkaido University researchers has revealed how chemical processes in the atmosphere have led to persistently high nitrate levels despite a reduction in emissions over the past few decades.

In a UNSW-led Nature study, researchers say that an off-the-scale marine heat wave in the North Atlantic Ocean in 2023 was caused by record-breaking weak winds combined with increased solar radiation—all on the back of ongoing climate change.

Lenore Tedesco doesn't need to venture far to witness sea-level rise. She tracks its relentless advance from her window at work.

Even if you live far from the boreal forests in Canada and Siberia, you've likely noticed an increase in smoke from their forest fires. During major blazes in 2023, the smoke tinted the New York sky orange and drifted as far south as New Orleans. These blazes have surged in the last decade due to the effects of climate change—warmer summers, less snow cover in the spring, and the loss of sea ice. Experts expect that trend to continue.

The accumulation of microplastics in the environment, and within our bodies, is an increasingly worrisome issue. But predicting where these ubiquitous particles will accumulate, and therefore where remediation efforts should be focused, has been difficult because of the many factors that contribute to their dispersal and deposition.

Editors’ Highlights are summaries of recent papers by AGU’s journal editors. Source: AGU Advances

Mountain landscapes are as much a product of erosion as they are of uplift. It is certainly true that glaciers can carve uplifted regions, increasing their topographic relief.

Using numerical modeling that integrates both river and glacial erosion across a time span that includes glacial-interglacial cycles, Bernard et al. [2025] flip the script on how we think glaciers shape mountains. The authors show that a “glacial sheltering” effect can lead to the development of extensive low-relief surfaces at moderate elevations, and they review the existence of candidate surfaces in Scandinavia and other locations.

A key finding is that such surfaces can not only be preserved by glaciation, but they can also emerge from it, and at variable elevations that are a function of ice volume. This is significant not just because humans are inspired by mountains and their topography: flat or low-relief surfaces play a large role as a reference elevation in explaining landscape evolution and in tectonic studies of uplift that make assumptions about where, when, and how such surfaces originated.

Citation: Bernard, M., van der Beek, P. A., Pedersen, V. K., & Colleps, C. (2025). Production and preservation of elevated low-relief surfaces in mountainous landscapes by Pliocene-Quaternary glaciations. AGU Advances, 6, e2024AV001610.  https://doi.org/10.1029/2024AV001610

—Peter Zeitler, Editor, AGU Advances

Text © 2025. The authors. CC BY-NC-ND 3.0
Except where otherwise noted, images are subject to copyright. Any reuse without express permission from the copyright owner is prohibited.

Source: AGU Advances

Shortly after President Joe Biden took office in 2021, he nominated Asmeret Asefaw Berhe, then a biogeochemist at the University of California, Merced, to oversee the Department of Energy’s (DOE) Office of Science. After a 15-month vetting process involving interviews, a mountain of paperwork, and, ultimately, a Senate confirmation, the AGU medalist became the first person of color and the first Earth scientist to hold the position. She served in the position for just under 2 years.

Now, with science and diversity programs under attack, she reflects on her path to leadership in a new commentary in AGU Advances. Berhe became familiar with DOE’s science program as a graduate student at the University of California, Berkeley. She later went on to receive DOE funding, collaborate with researchers from various national laboratories, and mentor scientists who went on to secure DOE positions. She says that combined with guidance from her mentors, these experiences helped her develop the skills she needed for her DOE appointment, not only in science but in managing, accounting, mediation, and ethical guidance.

Berhe, who was born in Eritrea and was one of only a few undergraduate women at Asmara University studying soil science, prioritized basic research, robust science communication, and promoting diversity in STEM (science, technology, engineering, and mathematics) in her DOE role. Providing opportunities in STEM for people from all walks of life starts with equalizing the distribution of funding, she writes. She cited an American Physical Society report that found, in 2018, 90% of federal research funding went to the top 22% of institutions, even though the vast majority of students—especially those from low-income backgrounds—attend other schools. Under Berhe’s tenure, the DOE began asking grant applicants to demonstrate plans for collaborating with schools less likely to receive funding, enabling scholars from diverse backgrounds to access DOE resources.

Berhe thinks recent efforts by some politicians to end diversity, equity, and inclusion (DEI) programs are partly because of a misconception around what DEI means. These programs are often misconstrued as serving only gender or racial minorities from urban environments, when, in fact, many are intended to serve a much wider range of Americans, she writes.

Today’s political climate sometimes leaves Berhe with feelings of despair. But she remains hopeful that with time, the next generation of scientists will benefit from opportunities like those she’s had. “Together, we will weather this storm,” she writes. (AGU Advances, https://doi.org/10.1029/2025AV001757, 2025)

—Saima May Sidik (@saimamay.bsky.social), Science Writer

Citation: Sidik, S. M. (2025), Former Department of Energy leader reflects on a changing landscape, Eos, 106, https://doi.org/10.1029/2025EO250211. Published on 4 June 2025. Text © 2025. AGU. CC BY-NC-ND 3.0
Except where otherwise noted, images are subject to copyright. Any reuse without express permission from the copyright owner is prohibited.

The sediments underlying the Salt Lake Valley are thicker in places than previously thought, indicating that current seismic hazard models likely underestimate the amount of shaking Utah's population center could experience in future earthquakes, according to new research led by University of Utah seismologists.

Author(s): Zhi-Wei Wang, Tie-Huai Zhang, and Wei-Min Wang

We investigate with particle-in-cell simulation the transport of fast electrons of MeV under a kT-level magnetic field produced by a circular coil target, where the fast electrons are generated by a picosecond laser pulse with typical intensity of 5×1019W/cm2 adopted in fast ignition. The fast elect…

[Phys. Rev. E 111, 065204] Published Wed Jun 04, 2025

Governments should ban all mining and fishing in the high seas "forever" to protect ocean biodiversity, climate stability—and humanity, climate and ocean experts said Wednesday.

What’s Next for Science?

A 200,000 cubic metre rockslide in a remote area of Tibet on Sunday has left ten people dead or missing.

On 1 June 2025 a large rockslide occurred in Muta township in Chamdo (Qamdo) metropolitan area in Tibet. Note that Chinese media sources call this area Xizang Autonomous Region, but it is what most of us know as Tibet. Chinese media reports, which can be unreliable from Tibet, indicate that three people are confirmed to have been killed with a further seven reported to be missing. Two people were injured.

CGTN has a video online showing the landslide, which includes drone footage. The area has a dusting of snow, which makes interpretation difficult. CCTV also has the same footage posted to Youtube:-

This video includes imagery of the head scarp of the landslide:-

The head scarp of the 1 June 2025 rockslide at Muta in Tibet. Image from a video posted to Youtube by CCTV.

There is also a good image of the full length of the rockslide:-

The full extent of the 1 June 2025 rockslide at Muta in Tibet. Image from a video posted to Youtube by CCTV.

This landslide has a slightly unusual morphology, with much of the material from the upper portion of the slope stalled on the hillside. However, the mass of material in the valley floor is large, as this image shows:-

The lower portion of the 1 June 2025 rockslide at Muta in Tibet. Image from a video posted to Youtube by CCTV.

The landslide has blocked the valley and a small lake has started to develop. This will need to be managed. Note the run up of the landslide deposit on the opposite slope, which indicates that the mass was moving comparatively quickly. There are two people on the left of the image for scale.

The CGTN video suggests that the landslide was about 200,000 m3, which would be around 500,000 tonnes.

The precise location of this event is unclear to me. Chamdo is a large area centred on [31.1362, 97.2359]. A report by Xinhua suggests that the landslide occurred in Dengqen County (Dêngqên County), which is in the northwest of Chamdo, centred on [31.5396, 95.4156]. Wikidata indicates that Muta is located at [32.30957, 95.09376], and Google maps has this location as “Mutaxiang”, with “Muta town” a little to the west, so this is credible. We shall have to wait for a clear day to obtain satellite imagery to confirm this – given the limited loss of life, the landslide has probably not struck Muta itself.

As usual for China, especially when it comes to Tibet, the media footage includes lots of images of the response of the authorities to the disaster. Sadly, the likelihood of the missing people being recovered alive is very low.

Return to The Landslide Blog homepage Text © 2023. The authors. CC BY-NC-ND 3.0
Except where otherwise noted, images are subject to copyright. Any reuse without express permission from the copyright owner is prohibited.

SummaryWe analyze data from 48 seismic stations located in the western part of the Makran Subduction Zone to gain a detailed knowledge of the crustal and uppermost mantle structure in that region. The Makran is a flat subduction zone with a very thick accretionary wedge. It is a major tsunami hazard of the Indian Ocean but remains one of the world's least studied subduction zones. Its structure and evolution is increasingly becoming a subject of research interest as it can help to better understand the dynamics of flat subduction zones. Our P- and S-wave receiver function analyses reveal that the Arabian oceanic plate is currently dipping north-ward beneath the onshore accretionary wedge at a very low angle of 3°. The depth of the oceanic Moho in the coastal region is ∼30 km due to the presence of ∼22-24 km of sedimentary cover. It increases to ∼60 km beneath the Jazmurian Depression and further deepens to ∼80 km beneath the Bazman and Taftan volcanoes. The change from a relatively flat to a steeper subduction occurs just south of the Qasr-e Qand thrust fault. From the combined results of the receiver function stacking and joint inversion of P-wave receiver functions and Rayleigh wave group dispersion data, we infer that the continental Moho varies within a depth range of 40 to 56 km, with the shallowest part beneath the Sistan Suture Zone and the deepest beneath the Taftan volcano. Based on shear-wave velocity models, the sedimentary cover thickness in the onshore accretionary wedge varies from Coastal Makran to 34 km in Inner Makran. The lower-than-normal mantle wedge shear-wave velocities suggest that the mantle wedge might have undergone at least 25 per cent serpentinization. From the velocity models we conclude that the crust of the Jazmurian Depression is more likely of continental origin.

AbstractA Slow-Slip Event (SSE) is a slow release of tectonic stress along a fault zone, over periods ranging from hours to months. SSEs have been recorded in most of the geodetically well-instrumented subduction zones. Although these transient events observed by geodesy are typically excluded from probabilistic seismic hazard analysis (PSHA), they might play a crucial role in the seismic cycle by reducing the seismic slip rate (slip rate discounting the aseismic process). This effective reduction implies that incorporating SSEs into PSHA may improve the reliability of hazard assessments. Costa Rica, located at the southern end of the Middle American Trench, hosts large earthquakes as well as SSEs. Shallow and deep SSEs have long been detected at the Nicoya peninsula, in northern Costa Rica, and recently, also in the southern part of the country at the Osa peninsula. In this study, we first collect geodetic and SSE observations in Costa Rica. Then, we propose a method to incorporate them into PSHA, based on identifying regions where SSEs occur, inferring slip deficits and estimating seismic slip rates in each subduction segment. Next, we analyze the implications for PSHA and its epistemic uncertainty, using these seismic slip rates, the resulting seismic moment rate budgets, and determining earthquake rates and maximum magnitudes with different approaches. Finally, we compute a countrywide PSHA following the 2022 Costa Rica Seismic Hazard Model (CRSHM 2022) but modifying the seismic source characterization using geodetic information for the regions where SSEs occur. Compared to the CRSHM 2022, this approach leads to reductions of the resulting peak ground acceleration at return period of 475 years (PGA-475) of up to ∼15 per cent in the Nicoya peninsula, but also to an increase up to ∼40 per cent in the Central Pacific region and ∼30 per cent in the Osa peninsula. Moreover, we find that, under a geodetic-based approach and disregarding SSEs, the PGA-475 would increase by up to ∼10 per cent. Our novel approach underscores the relevance of incorporating geodetic observations and particularly SSEs into PSHA, especially in subduction margins near the coast.

The UK government recently announced plans to fund five small-scale trials related to geoengineering. It's the first time a state research funding body has put serious money into what's known as solar radiation management, or SRM, which seeks to cool the planet by reflecting more of the sun's energy back into space.

Collapse of the West Antarctic Ice Sheet could be triggered by very little ocean warming above present-day, leading to a devastating four meters of global sea level rise to play out over hundreds of years, according to a study now published in Communications Earth & Environment, co-authored by the Potsdam Institute for Climate Impact Research (PIK). However, the authors emphasize that immediate actions to reduce emissions could still avoid a catastrophic outcome.

Mount Etna, the volcano that towers over eastern Sicily, has again captivated the world with a spectacular show, spewing smoke and high into the sky.