{"results":[{"id":"doaj_10.26443/seismica.v5i1.2015","title":"Atmospheric Signals Recorded by Seismometers in the Sub-Seismic Frequency Band","authors":[{"name":"Piero Poli"},{"name":"Josipa Majstorović"},{"name":"T. Dylan  Mikesell"}],"abstract":"\nBroadband seismometers, though designed to record ground motion generated by earthquakes, are also sensitive to a wide range of other processes occurring at the interface between the solid Earth, oceans, and atmosphere, often considered noise. In the sub-seismic band (1–24 hours), they can detect tidal signals but are limited by self-noise for weaker Earth and atmospheric processes. By applying a coherence-based network stacking technique to large seismic arrays, we identify weak, periodic gravity signals at these frequencies. Using three years of collocated vertical seismic and pressure data from USArray, we demonstrate the atmospheric origin of these oscillations. Coherence and transfer function analysis reveal strong links between pressure and seismic acceleration at atmospheric tide periods. The transfer function shows frequency dependence consistent with superconducting gravimeter observations, and its consistently negative phase indicates that pressure increases correspond to decreases in gravitational acceleration. This confirms Newtonian attraction from atmospheric mass changes as the dominant mechanism. Our results show that network stacks of broadband seismometers can detect atmospheric gravity variations as small as 10–100 nanogals, demonstrating their value for gravimetry and for observing atmospheric dynamics. This approach also provides a framework to estimate atmospheric noise in the sub-seismic range, improving the detection of solid Earth signals once such contamination is removed.\n","source":"DOAJ","year":2026,"language":"","subjects":["Dynamic and structural geology"],"doi":"10.26443/seismica.v5i1.2015","url":"https://seismica.library.mcgill.ca/article/view/2015","is_open_access":true,"published_at":"","score":70},{"id":"doaj_10.5194/esd-17-291-2026","title":"Emerging global freshwater challenges unveiled through observation-constrained projections","authors":[{"name":"F. Huo"},{"name":"Y. Li"},{"name":"Z. Li"}],"abstract":"\u003cp\u003eFuture hydrological projections exhibit significant discrepancies among models, undermining confidence in the predicted magnitude and timing of hydrological extremes. Here we show that observation-constrained changes in global mean terrestrial water storage (TWS), excluding Greenland and Antarctica, could be approximately 83 mm lower than raw projections from the Inter-Sectoral Impact Model Intercomparison Project phase 3b (ISIMIP3b) by the end of this century under both the low (SSP1-2.6) and high (SSP3-7.0) future forcing scenarios. Notably, the 95th percentile upper bounds are substantially reduced from 2  to \u003cspan class=\"inline-formula\"\u003e−\u003c/span\u003e96 mm under the low-emissions scenario and from 8 to \u003cspan class=\"inline-formula\"\u003e−\u003c/span\u003e105 mm under the high-emissions scenario, revealing a notable overestimation of global freshwater availability in the raw model projections. Global models are intricate process representations, making it challenging to isolate causes of their differences with observations. However, by leveraging the emergent constraint (EC) methodology and inter-model spread to empirically adjust biases against observations, we derive more tightly constrained estimates of future TWS changes than those obtained from conventional, unconstrained approaches. The EC-corrected estimates are substantially lower than the raw ISIMIP3b projections, implying that current water resource planning may underestimate the severity of future water shortages, particularly if global water demand remains stable or continues to rise. Our findings pinpoint the urgent need to reduce model uncertainties and enhance the reliability of future hydrological projections to better inform water resource management and climate adaptation strategies.\u003c/p\u003e","source":"DOAJ","year":2026,"language":"","subjects":["Science","Geology","Dynamic and structural geology"],"doi":"10.5194/esd-17-291-2026","url":"https://esd.copernicus.org/articles/17/291/2026/esd-17-291-2026.pdf","is_open_access":true,"published_at":"","score":70},{"id":"ss_83e819816e0232a12f69671ee21e3ba1ca1e8441","title":"Integrating Virtual Reality Into a Structural Geology Curriculum: Two Longitudinal Case Studies of Blended Immersive Learning in Practice","authors":[{"name":"C. Gallagher"},{"name":"S. Türkay"},{"name":"Mackenzie Muir"},{"name":"David Conroy"},{"name":"Christoph Schrank"}],"abstract":"This article concerns two 9‐week longitudinal case studies of the integration of an immersive blended‐learning structural geology curriculum at an Australian university. Immersive learning environments (ILEs) have the capacity to enhance learning outcomes in STEM through their inherent ability to represent 3D concepts and embed their users in real‐world scenarios. Virtual reality (VR) presents an opportunity for educators to complement students′ learning, particularly in disciplines such as geoscience that are dependent on spatial reasoning and experiential learning. However, there are significant challenges presented by the integration of ILEs into curriculum. This article evaluates the benefits and limitations of immersive blended learning through an in‐the‐wild exploration of instructor and student experiences. Overall, students were interested in learning through VR, enjoyed the experiences and improved their self‐efficacy. They preferred instructor‐led learning paradigms due to dynamic visualisations and engaged discussions. This article identifies several challenges that impacted integration and students′ learning and provides a list of recommended approaches for future curriculum integration.","source":"Semantic Scholar","year":2026,"language":"en","subjects":null,"doi":"10.1155/hbe2/5495369","url":"https://www.semanticscholar.org/paper/83e819816e0232a12f69671ee21e3ba1ca1e8441","is_open_access":true,"published_at":"","score":70},{"id":"ss_a52370235745828347d104f743c561b2f8c99810","title":"A finite element analysis of the effect of structural geology on the seismic behaviour of tunnels","authors":[{"name":"Tuba Fatima"},{"name":"Md. Rehan Sadique"},{"name":"A. Alam"},{"name":"M. Alam"},{"name":"Sufiyan Ahmad"},{"name":"Chih-Wei Lu"}],"abstract":"","source":"Semantic Scholar","year":2026,"language":"en","subjects":null,"doi":"10.1007/s40808-025-02709-0","url":"https://www.semanticscholar.org/paper/a52370235745828347d104f743c561b2f8c99810","is_open_access":true,"published_at":"","score":70},{"id":"ss_b23e89e2a889a98255ffbf01fcae932a06c886cd","title":"Numerical investigation on seismic response characteristics and deformation mechanism of high-steep rock slopes containing weak structural planes using time-frequency joint analysis","authors":[{"name":"Dakai Xu"},{"name":"Danqing Song"},{"name":"Liang Wang"},{"name":"Xiangrui Huang"},{"name":"Zhuo Chen"}],"abstract":"","source":"Semantic Scholar","year":2025,"language":"en","subjects":null,"doi":"10.1007/s10064-025-04143-z","url":"https://www.semanticscholar.org/paper/b23e89e2a889a98255ffbf01fcae932a06c886cd","is_open_access":true,"citations":4,"published_at":"","score":69.12},{"id":"ss_d56e51a60cdfc8880037bf10604519348063a926","title":"Analysis of video data from an unmanned aerial vehicle based on a structural similarity index","authors":[{"name":"P. A. Lyakhov"},{"name":"A. Orazaev"}],"abstract":"The article proposes a metric for the analysis of video data recorded by an unmanned aerial vehicle that uses a structural similarity index for evaluation. The metric consists in comparing frames in terms of brightness, contrast and pixel structure and a subsequent assessment of the video frame state. A comparative analysis of the proposed and currently employed metrics was carried out. The research included simulations on analog and digital video data at different frame rates. The results showed that the developed metric successfully detects delays, frame distortions and dynamic changes in a video scene. The proposed metric can find a wide range of applications of unmanned aerial vehicles in applied areas: construction, agriculture, geology and cartography.","source":"Semantic Scholar","year":2025,"language":"en","subjects":null,"doi":"10.18287/2412-6179-co-1569","url":"https://www.semanticscholar.org/paper/d56e51a60cdfc8880037bf10604519348063a926","is_open_access":true,"citations":3,"published_at":"","score":69.09},{"id":"ss_c0d4e1d2f9e6614df625ef151d09f87849f448c1","title":"Dynamic response evaluation of landslide to ambient noise using the HVSR method, the case of golay landslide in North Khorasan Province, Iran","authors":[{"name":"M. Hosseinzadeh"},{"name":"A. Sohrabi-Bidar"},{"name":"R. Khajevand"},{"name":"saeedmohammad sabouri"}],"abstract":"","source":"Semantic Scholar","year":2025,"language":"en","subjects":null,"doi":"10.1007/s10064-025-04311-1","url":"https://www.semanticscholar.org/paper/c0d4e1d2f9e6614df625ef151d09f87849f448c1","is_open_access":true,"citations":2,"published_at":"","score":69.06},{"id":"ss_3cab9c1dbb970ce16db812de3d447e31771bd29c","title":"Dynamic response of moraine soil under the combined effect of rainfall and seismic loading using shaking table tests","authors":[{"name":"Zhen Han"},{"name":"Hejie Tang"},{"name":"X. Ni"},{"name":"Haohui Ding"},{"name":"Yuekai Hua"},{"name":"Qiangqiang Huang"},{"name":"Wendu Xie"},{"name":"Zhun Liu"}],"abstract":"","source":"Semantic Scholar","year":2025,"language":"en","subjects":null,"doi":"10.1007/s10064-025-04611-6","url":"https://www.semanticscholar.org/paper/3cab9c1dbb970ce16db812de3d447e31771bd29c","is_open_access":true,"citations":1,"published_at":"","score":69.03},{"id":"ss_ece0b4392d73b683c801e26d99ec99104b7f9e16","title":"Dynamic features and cracking process of limestone exposed to repetitive impact loading","authors":[{"name":"Fei Zhang"},{"name":"Jianqing Bu"},{"name":"Tianliang Wang"},{"name":"Hongfang Song"}],"abstract":"","source":"Semantic Scholar","year":2025,"language":"en","subjects":null,"doi":"10.1007/s10064-025-04564-w","url":"https://www.semanticscholar.org/paper/ece0b4392d73b683c801e26d99ec99104b7f9e16","is_open_access":true,"citations":1,"published_at":"","score":69.03},{"id":"doaj_10.3390/geotechnics5010014","title":"Long-Term Effects of Municipal Solid Waste Leachate on Soil Hydraulic Properties","authors":[{"name":"Feten Chihi"},{"name":"Gabriella Varga"},{"name":"Katalin Kopecskó"}],"abstract":"This experimental study examines the effects of landfill leachate contamination on soil hydraulic conductivity over a 12-month period, addressing the current lack of long-term experimental data in this field. Laboratory permeability tests were performed on sandy clayey silt samples contaminated with leachate at concentrations ranging from 5% to 25%. Microstructural and mineralogical analyses were conducted using SEM and XRD to identify the mechanisms behind observed changes. The results identify a critical threshold at 15% contamination, where soil behavior transitions from granular to cohesive characteristics. Hydraulic conductivity increases at low contamination levels (5–10%, up to 1.2 × 10\u003csup\u003e−7\u003c/sup\u003e m/s) but decreases significantly at higher levels (4.172 × 10\u003csup\u003e−8\u003c/sup\u003e m/s at 15%, 8.545 × 10\u003csup\u003e−9\u003c/sup\u003e m/s at 20%). These changes are controlled by contamination level rather than exposure time, with values remaining stable throughout the 12-month period. The study provides essential parameters for landfill design and contamination assessment, demonstrating how leachate concentration affects long-term soil hydraulic properties through mineral formation and structural modification.","source":"DOAJ","year":2025,"language":"","subjects":["Dynamic and structural geology"],"doi":"10.3390/geotechnics5010014","url":"https://www.mdpi.com/2673-7094/5/1/14","is_open_access":true,"published_at":"","score":69},{"id":"doaj_10.1016/j.eqrea.2024.100356","title":"High-resolution satellite imagery analysis of coseismic landslides and liquefaction induced by the 2024 MW 7.4 Hualien earthquake, Taiwan, China","authors":[{"name":"Lingyun Lu"},{"name":"Yueren Xu"},{"name":"Jiacheng Tang"},{"name":"Guiming Hu"}],"abstract":"Rapidly obtaining spatial distribution maps of secondary disasters triggered by strong earthquakes is crucial for understanding the disaster-causing processes in the earthquake hazard chain and formulating effective emergency response measures and post-disaster reconstruction plans. On April 3, 2024, a MW 7.4 earthquake struck offshore east of Hualien, Taiwan, China, which triggered numerous coseismic landslides in bedrock mountain regions and severe soil liquefaction in coastal areas, resulting in significant economic losses. This study utilized post-earthquake emergency data from China's high-resolution optical satellite imagery and applied visual interpretation method to establish a partial database of secondary disasters triggered by the 2024 Hualien earthquake. A total of 5 348 coseismic landslides were identified, which were primarily distributed along the eastern slopes of the Central Mountain Range watersheds. In high mountain valleys, these landslides mainly manifest as localized bedrock collapses or slope debris flows, causing extensive damage to highways and tourism facilities. Their distribution partially overlaps with the landslide concentration zones triggered by the 1999 Chi-Chi earthquake. Additionally, 6 040 soil liquefaction events were interpreted, predominantly in the Hualien Port area and the lowland valleys of the Hualien River and concentrated within the IX-intensity zone. Widespread surface subsidence and sand ejections characterized soil liquefaction. Verified against local field investigation data in Taiwan, rapid imaging through post-earthquake remote sensing data can effectively assess the distribution of coseismic landslides and soil liquefaction within high-intensity zones. This study provides efficient and reliable data for earthquake disaster response. Moreover, the results are critical for seismic disaster mitigation in high mountain valleys and coastal lowlands.","source":"DOAJ","year":2025,"language":"","subjects":["Geophysics. Cosmic physics","Dynamic and structural geology"],"doi":"10.1016/j.eqrea.2024.100356","url":"http://www.sciencedirect.com/science/article/pii/S2772467024000824","is_open_access":true,"published_at":"","score":69},{"id":"doaj_10.1144/esss2024-002","title":"Perspectives on developing a diverse, knowledgeable and inclusive scientific community in the shifting landscape of US scientific ocean drilling","authors":[{"name":"Brittany N. Hupp"},{"name":"Mohammed S. Hashim"},{"name":"Raquel Bryant"},{"name":"Christopher W. Kinsley"},{"name":"Alexandra Villa"},{"name":"Lucien Nana Yobo"},{"name":"John O. Ajayi"}],"abstract":"Scientific ocean drilling (SciOD) has been invaluable in advancing our understanding of Earth history. However, the most recent international SciOD programme ended in 2024, alongside the non-renewal of the riserless drilling vessel, the JOIDES Resolution. The US has not committed to joining a new SciOD programme despite prior efforts focused on important scientific priorities (e.g. climate change, assessing natural hazards). During this critical juncture, we argue that incorporating accessibility, justice, equity, diversity and inclusion (AJEDI) efforts will further develop a cohesive community that is well prepared to tackle questions critical to the US and global community. Herein we provide recommendations to develop a knowledgeable and diverse community of scientists in the changing landscape of US SciOD, as informed by historical participation data and recent efforts by early career scientists. Recommendations focus on accessible training opportunities, enhanced stewardship of archived materials, additional funding for research at all academic levels, inclusion of cultural advisors and social scientists, and a commitment to continuing SciOD education. By pursuing these recommendations, the US SciOD community could become a leader for modelling AJEDI principles and ensuring equitable knowledge transfer that is needed to reimagine and rebuild a new, inclusive SciOD programme.","source":"DOAJ","year":2025,"language":"","subjects":["Dynamic and structural geology"],"doi":"10.1144/esss2024-002","url":"https://www.lyellcollection.org/doi/10.1144/esss2024-002","is_open_access":true,"published_at":"","score":69},{"id":"ss_6cdff126d7cac6415dd951d02eb3d225e11ee5f7","title":"Dynamic assessment of Construction and operation Risks of Swivel Bridges Based on Bayesian Networks and deep learning","authors":[{"name":"Qing Liu"},{"name":"Yi Zhang"},{"name":"G.-y. Lu"},{"name":"Zhi Li"},{"name":"Xiang Sun"},{"name":"Zheng Qi"}],"abstract":"In view of the complexity and dynamics of structural safety risks during the construction and operation stages of swivel bridges, this study proposes an intelligent safety monitoring method based on the integration of Bayesian network (BN) and deep learning. By constructing a three-layer index system of \"basic geology-rotation process-real-time monitoring\", combining expert knowledge and engineering data to complete the learning of the network structure, and using the temporal convolutional network (TCN) to extract temporal features such as the rotation attitude and structural stress, the mapping of risk states is achieved. The (60+64) m swivel bridge of the North Extension project of Xi 'an Xingfu Road was taken as a case for verification. The results show that the fusion model is significantly superior to the single model in terms of indicators such as precision rate (0.91), recall rate (0.88), and AUC value (0.93), and the recognition ability for high-risk working conditions has improved by 32%. The research results provide quantitative tools for the precise control of structural safety during the construction and operation stages of swivel bridges, especially having significant advantages in dynamic risk prediction and multi-source monitoring data fusion under complex rotating processes.","source":"Semantic Scholar","year":2025,"language":"en","subjects":null,"doi":"10.1109/ICAIEM66060.2025.11139268","url":"https://www.semanticscholar.org/paper/6cdff126d7cac6415dd951d02eb3d225e11ee5f7","is_open_access":true,"published_at":"","score":69},{"id":"crossref_10.1016/j.jsg.2024.105235","title":"Kinematic and dynamic fault slip analyses: Implications from the surface rupture of the 2023 Elbistan (Kahramanmaraş) (Mw7.6) earthquake, Türkiye","authors":[{"name":"Mehmet Köküm"}],"abstract":"","source":"CrossRef","year":2024,"language":"en","subjects":null,"doi":"10.1016/j.jsg.2024.105235","url":"https://doi.org/10.1016/j.jsg.2024.105235","is_open_access":true,"citations":9,"published_at":"","score":68.27000000000001},{"id":"ss_b5474c0b33e1ef9c16f7fa5aaf358344b7fc878b","title":"Structural Geology and Chronology of Shear Zones along the Shangdan Suture in Qinling Orogenic Belt, China: Implications for Late Mesozoic Intra-Continental Deformation of East Asia","authors":[{"name":"Falak Sheir"},{"name":"Wei Li"},{"name":"Le Zhang"},{"name":"Basil Alabowsh"},{"name":"Liuqing Jiang"},{"name":"Li Liang"},{"name":"Sainan Gao"},{"name":"Shair Baz"},{"name":"U. Ashraf"}],"abstract":"","source":"Semantic Scholar","year":2024,"language":"en","subjects":null,"doi":"10.1007/s12583-022-1753-7","url":"https://www.semanticscholar.org/paper/b5474c0b33e1ef9c16f7fa5aaf358344b7fc878b","is_open_access":true,"citations":9,"published_at":"","score":68.27000000000001},{"id":"doaj_10.1016/j.eqrea.2024.100292","title":"The 2024 Mj 7.6 Noto Peninsula, Japan earthquake caused by the fluid flow in the crust","authors":[{"name":"Yuzo Ishikawa"},{"name":"Ling Bai"}],"abstract":"On January 1, 2024 ​at 16:10:09 JST, an Mj 7.6 earthquake struck the Noto Peninsula in the southern part of the Sea of Japan. This location has been experiencing an earthquake swarm for more than three years. Here, we provide an overview of this earthquake, focusing on the slip distribution of the mainshock and its relationship with the preceding swarm. We also reexamined the source areas of other large earthquakes that occurred around the Sea of Japan in the past and compared them with the Matsushiro earthquake swarm in central Japan from 1964 to 1968. The difference between the Matsushiro earthquake swarm and the Noto earthquake swarm is the surrounding stress field. The Matsushiro earthquake swarm was a strike-slip stress field, so the cracks in the crust were oriented vertically. This allowed fluids seeped from the depths to rise and flow out to the surface. On the other hand, the Noto area was a reverse fault stress field. Therefore, the cracks in the earth's crust were oriented horizontally. Fluids flowing underground in deep areas could not rise and spread over a wide area in the horizontal plane. This may have caused a large amount of fluid to accumulate underground, triggering a large earthquake. Although our proposed mechanism does not take into account other complex geological conditions into consideration, it may provide a simple way to explain why the Noto swarm is followed by a large earthquake while other swarms are not.","source":"DOAJ","year":2024,"language":"","subjects":["Geophysics. Cosmic physics","Dynamic and structural geology"],"doi":"10.1016/j.eqrea.2024.100292","url":"http://www.sciencedirect.com/science/article/pii/S2772467024000186","is_open_access":true,"published_at":"","score":68},{"id":"doaj_10.5194/esd-15-801-2024","title":"Natural marine bromoform emissions in the fully coupled ocean–atmosphere model NorESM2","authors":[{"name":"D. Booge"},{"name":"D. Booge"},{"name":"J. F. Tjiputra"},{"name":"D. J. L. Olivié"},{"name":"B. Quack"},{"name":"K. Krüger"}],"abstract":"\u003cp\u003eOceanic bromoform (CHBr\u003cspan class=\"inline-formula\"\u003e\u003csub\u003e3\u003c/sub\u003e\u003c/span\u003e) is an important precursor of atmospheric bromine. Although highly relevant for the future halogen burden and ozone layer in the stratosphere, global CHBr\u003cspan class=\"inline-formula\"\u003e\u003csub\u003e3\u003c/sub\u003e\u003c/span\u003e production in the ocean and its emissions are still poorly constrained in observations and are mostly neglected in climate models. Here, we newly implement marine CHBr\u003cspan class=\"inline-formula\"\u003e\u003csub\u003e3\u003c/sub\u003e\u003c/span\u003e in the second version of the state-of-the-art Norwegian Earth System Model (NorESM2) with fully coupled interactions of ocean, sea ice, and atmosphere. Our results are validated using oceanic and atmospheric observations from the HalOcAt (Halocarbons in the Ocean and Atmosphere) database. The simulated mean oceanic concentrations (6.61 \u003cspan class=\"inline-formula\"\u003e±\u003c/span\u003e 3.43 pmol L\u003cspan class=\"inline-formula\"\u003e\u003csup\u003e−1\u003c/sup\u003e)\u003c/span\u003e are in good agreement with observations from open-ocean regions (5.02 \u003cspan class=\"inline-formula\"\u003e±\u003c/span\u003e 4.50 pmol L\u003cspan class=\"inline-formula\"\u003e\u003csup\u003e−1\u003c/sup\u003e)\u003c/span\u003e, while the mean atmospheric mixing ratios (0.76 \u003cspan class=\"inline-formula\"\u003e±\u003c/span\u003e 0.39 ppt) are lower than observed but within the range of uncertainty (1.45 \u003cspan class=\"inline-formula\"\u003e±\u003c/span\u003e 1.11 ppt). The NorESM2 ocean emissions of CHBr\u003cspan class=\"inline-formula\"\u003e\u003csub\u003e3\u003c/sub\u003e\u003c/span\u003e (214 Gg yr\u003cspan class=\"inline-formula\"\u003e\u003csup\u003e−1\u003c/sup\u003e)\u003c/span\u003e are within the range of or higher than previously published estimates from bottom-up approaches but lower than estimates from top-down approaches. Annual mean fluxes are mostly positive (sea-to-air fluxes); driven by oceanic concentrations, sea surface temperature, and wind speed; and dependent on season and location. During winter, model results imply that some oceanic regions in high latitudes act as sinks of atmospheric CHBr\u003cspan class=\"inline-formula\"\u003e\u003csub\u003e3\u003c/sub\u003e\u003c/span\u003e due to their elevated atmospheric mixing ratios. We further demonstrate that key drivers for oceanic and atmospheric CHBr\u003cspan class=\"inline-formula\"\u003e\u003csub\u003e3\u003c/sub\u003e\u003c/span\u003e variability are spatially heterogeneous. In the tropical West Pacific, which is a hot spot for oceanic bromine delivery to the stratosphere, wind speed is the main driver for CHBr\u003cspan class=\"inline-formula\"\u003e\u003csub\u003e3\u003c/sub\u003e\u003c/span\u003e fluxes on an annual basis. In the North Atlantic, as well as in the Southern Ocean region, atmospheric and oceanic CHBr\u003cspan class=\"inline-formula\"\u003e\u003csub\u003e3\u003c/sub\u003e\u003c/span\u003e variabilities interact during most of the seasons except for the winter months, when sea surface temperature is the main driver. Our study provides an improved process-based understanding of the biogeochemical cycling of CHBr\u003cspan class=\"inline-formula\"\u003e\u003csub\u003e3\u003c/sub\u003e\u003c/span\u003e and more reliable natural emission estimates, especially on seasonal and spatial scales, compared to previously published model estimates.\u003c/p\u003e","source":"DOAJ","year":2024,"language":"","subjects":["Science","Geology","Dynamic and structural geology"],"doi":"10.5194/esd-15-801-2024","url":"https://esd.copernicus.org/articles/15/801/2024/esd-15-801-2024.pdf","is_open_access":true,"published_at":"","score":68},{"id":"ss_2d5d764778c999427f1627a569112ee330d0acc9","title":"Structural dynamic constitutive model of uncompacted saturated loess based on experimental results","authors":[{"name":"Yuwei Zhang"},{"name":"Lianbaichao Liu"},{"name":"Zhanping Song"},{"name":"Youchuan Wu"},{"name":"Fang Zheng"}],"abstract":"","source":"Semantic Scholar","year":2024,"language":"en","subjects":null,"doi":"10.1007/s10064-024-03969-3","url":"https://www.semanticscholar.org/paper/2d5d764778c999427f1627a569112ee330d0acc9","is_open_access":true,"published_at":"","score":68},{"id":"doaj_10.5194/adgeo-59-59-2023","title":"Sources of Contaminants of Emerging Concern in Groundwater of Barcelona Urban Area","authors":[{"name":"D. Schmidlin"},{"name":"L. Scheiber"},{"name":"M. Teixidó"},{"name":"E. Vázquez"},{"name":"R. Criollo"},{"name":"A. Jurado"},{"name":"D. Puigserver"},{"name":"S. Burdons"},{"name":"M. Enrich"}],"abstract":"\u003cp\u003eGroundwater is a vital resource for the development of\nurban areas, where the problem focuses on the quantity and on the quality of\nthis freshwater resource. Barcelona is a good example as because currently\ngroundwater is used for irrigation of parks and gardens and street cleaning\ndue to its poor quality as drinking water source. Among the pollutants found\nin groundwater, of special interest are contaminants of emerging concern\n(CEC), as they pose a high risk to the aquatic environment and human health.\nThe behaviour, spatial distribution and processes that control them in the\naquatic environment are still uncertain and most of them are unregulated. In\nthis paper we study the inputs and processes controlling the hydrochemistry\nof Barcelona urban groundwater with special emphasis on the CEC. We selected\n29 CEC that were detected at high concentrations of up to 1 \u003cspan class=\"inline-formula\"\u003eµ\u003c/span\u003eg L\u003cspan class=\"inline-formula\"\u003e\u003csup\u003e−1\u003c/sup\u003e\u003c/span\u003e  (e.g.\ngemfibrozil, benzotriazole, among others). Towards the higher zones we\nidentify groundwater with relative low mineralization more proximate to the\nnatural recharge composition, while towards the urban area the anthropic\ninputs are evident (e.g. nitrate concentrations range from 50 to 200 mg L\u003cspan class=\"inline-formula\"\u003e\u003csup\u003e−1\u003c/sup\u003e\u003c/span\u003e).\nNear the Besòs river there is a clear contribution from this superficial\nwater highly polluted, mostly from wastewater treatment plant (WWTP)\ndischarges, and reducing conditions. The main contributor of CEC pollution\nin groundwater was the river-aquifer interaction (Besòs river), while\ntowards the urban area it might come from sewage seepage and probably a\nminor input from urban runoff. The redox state of these waters seems to\ncontrol the fate and occurrence of several of these CEC. The limitations of\nthis study are restricted to a single sampling campaign, therefore these\nresults should be corroborated with other sampling campaigns, including the\nseasonal variations, which would allow establishing more robust conclusions.\u003c/p\u003e","source":"DOAJ","year":2023,"language":"","subjects":["Science","Geology","Dynamic and structural geology"],"doi":"10.5194/adgeo-59-59-2023","url":"https://adgeo.copernicus.org/articles/59/59/2023/adgeo-59-59-2023.pdf","is_open_access":true,"published_at":"","score":67},{"id":"doaj_https://doi.org/10.30730/gtrz.2023.7.2.160-174","title":"Длинные волны на шельфе юго-западного побережья о. Сахалин","authors":[{"name":"Ковалев Дмитрий Петрович"},{"name":"Ковалев Петр Дмитриевич"},{"name":"Зарочинцев Виталий Сергеевич"},{"name":"Кириллов Константин Владиславович"}],"abstract":"Рассматриваются результаты изучения длинноволновых движений с периодами более 20 ч на шельфе юго-западного побережья о. Сахалин с использованием полученных в натурных экспериментах временных серий колебаний уровня моря с дискретностью 1 с и продолжительностью от 4 до 6 мес. Спектральный анализ временных серий колебаний уровня моря для диапазона периодов от 8 до 200 ч выявил наличие длинноволновых процессов с периодами от 26.1 до 46.7 ч, которые значительно превышают инерционный период 16.48 ч. Численное моделирование шельфовых волн для экспоненциально выпуклых профилей морского дна, проведенное с использованием дисперсионного соотношения В.Т. Бухвальда и Дж.К. Адамса для волн континентального шельфа, показало, что обнаруженные волновые процессы с периодами от 31.2 ч до 46.7 ч являются шельфовыми волнами. Их амплитуды увеличиваются во время штормов; показана возможность передачи энергии от атмосферных возмущений шельфовым волнам, которые вносят вклад в формирование уровня моря, что подтверждает ранее сделанное предположение. Путем расчета разности фаз шельфовых волн на расстоянии 12.4 км между Невельском и Горнозаводском, наблюдаемых и определенных по теоретической модели, установлено, что вторая мода шельфовой волны с частотой 0.152 цикл/ч близка к теоретической. Регистрируемая в Ильинском и Горнозаводске волна с периодом 26.1 ч при расстоянии между пунктами 173.6 км не может быть шельфовой, а является волной Кельвина. Это подтверждено рассчитанной дисперсионной диаграммой, согласно которой длина волны около 689 км хорошо соответствует разности фаз для расстояния Ильинский–Горнозаводск. Установлено, что шельфовые волны, одним из механизмов генерации которых является напряжение ветра вдоль берега, имеют разные амплитуды в летнее и зимнее время, что обусловлено сезонным направлением вдольберегового ветра. В летний период направления распространения шельфовых волн и ветра противоположны, что ослабляет шельфовые волны.\r\n","source":"DOAJ","year":2023,"language":"","subjects":["Dynamic and structural geology","Stratigraphy","Engineering geology. Rock mechanics. Soil mechanics. Underground construction","Petrology"],"doi":"https://doi.org/10.30730/gtrz.2023.7.2.160-174","url":"http://journal.imgg.ru/web/full/f2023-2-4.pdf","is_open_access":true,"published_at":"","score":67}],"total":2094931,"page":1,"page_size":20,"sources":["DOAJ","CrossRef","Semantic Scholar"],"query":"Dynamic and structural geology"}