Geomorphology最新文献

{"title":"An extended kinematic inventory, magnitude-frequency curves, and damage assessment of rock slope failures in the central Spanish Pyrenees","authors":"J. Guerrero ,&nbsp;M. Guerra ,&nbsp;G. Desir ,&nbsp;A. Serreta ,&nbsp;Y. Thiery ,&nbsp;P. Lucha","doi":"10.1016/j.geomorph.2026.110172","DOIUrl":"10.1016/j.geomorph.2026.110172","url":null,"abstract":"<div><div>A new inventory of rock slope failures (RSFs) compiled in the central Spanish Pyrenees within the framework of the SPIRAL Project has identified 1232 RSFs, yielding a relatively low spatial density of 0.11 events per km². These RSFs exhibit very slow to extremely slow average displacement rates, ranging from 5 mm to 75 mm per year. Rock slides and earthflows are the most prevalent failure types, accounting for over 93% of the total, whereas rock slope deformations (RSDs), composite failures, and rock avalanches are comparatively rare. This predominance of rock slides and earthflows results in a shallower magnitude–frequency distribution relative to other mountainous regions. Lithology, glacial debuttressing, and slope angle are identified as the most influential conditioning factors. Most RSFs occur on slopes between 20° and 30°, especially in deglaciated settings and in bedrock composed of fine-grained, low-strength lithologies, such as turbidites, slates, marls, and evaporitic sequences, where weathering plays a critical role in promoting slope instability. Unfortunately, these relatively moderate slopes, which often correspond to relict landslide deposits, provided favourable conditions for the establishment of at least 25 human settlements in the past. These communities are now under threat and will require multimillion-euro investments to stabilize active movements. Furthermore, 41 RSFs intersect communication and irrigation networks, 138 affect ski resort infrastructures, 94 compromise paved roads, and 29 pose risks to dam safety. The estimated direct costs associated with active RSFs already exceed €152 million, and additional substantial mitigation efforts are anticipated in the near future.</div></div>","PeriodicalId":55115,"journal":{"name":"Geomorphology","volume":"498 ","pages":"Article 110172"},"PeriodicalIF":3.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evolution of rockfall risk following changes in hazard and exposure: Application to a road section in the Zermatt valley, Swiss Alps","authors":"Elsa Meisburger ,&nbsp;Manon Farvacque ,&nbsp;Nicolas Eckert ,&nbsp;Christophe Corona ,&nbsp;Franck Bourrier ,&nbsp;Markus Stoffel","doi":"10.1016/j.geomorph.2026.110190","DOIUrl":"10.1016/j.geomorph.2026.110190","url":null,"abstract":"<div><div>Due to rapid and intense socio-environmental transformations in rockfall-prone areas, risk assessment accounting for non-stationary conditions becomes a crucial issue for supporting long-term land-use zoning and adapting mitigation strategies. During the past few decades, several studies have examined the impacts of global warming on rockfall activity, especially at high-elevation sites. By contrast, concomitant changes in exposure, such as modifications in road traffic with changes in mountain tourism and social practices, have received little attention, making the overall changes in risks largely unknown. This study therefore proposes a quantitative risk assessment (QRA) of the cantonal road in Balmatten (Zermatt Valley, Swiss Alps), which evaluates the respective and overall effects of rockfall frequency and traffic density changes on rockfall risks at three time steps: 1960, 2010 and 2060. The approach relies on strong, yet reasonable assumptions that minimize computational burden. Results demonstrate the significant impact of road traffic fluctuations (+818%) on risk estimates, which largely outweighs the effects of climate change (+100%) on rockfall risk over the 1960–2060 period. Despite several challenges inherent to the implementation of non-stationary QRA approaches, these findings demonstrate their value to support adaptation of mountain territories in a time of global change.</div></div>","PeriodicalId":55115,"journal":{"name":"Geomorphology","volume":"498 ","pages":"Article 110190"},"PeriodicalIF":3.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146045174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tadpole-shaped microtopography and water balance in the megadune area of the Badain Jaran Desert","authors":"Yaochuang Yu ,&nbsp;Jingbo Zhao ,&nbsp;Yandong Ma ,&nbsp;Lixing Zhang ,&nbsp;Tianjie Shao ,&nbsp;Qiqin Gong","doi":"10.1016/j.geomorph.2026.110205","DOIUrl":"10.1016/j.geomorph.2026.110205","url":null,"abstract":"<div><div>In order to reveal the development mechanisms of various newly discovered microtopographies in the Badain Jaran desert region and their implications for water transport and water balance within the megadunes, a range of methods were employed, including field observation, electron microscope identification, X-ray diffraction and laser particle size analyzer. The results indicate the presence of tadpole-shaped microtopography, comb-shaped microtopography, densely distributed sand balls with salt film and multilayered gravitational water on the surface. These microtopographies have not been previously reported, and their distribution within the upper and middle parts of the megadunes is multi-layered and regular. The finer-grained sand layer, where tadpole-shaped microtopography is located, has a higher water content, while the coarser-grained sand layer has a lower water content. The mineral composition of the salt film is principally calcite, with smaller quantities of salt and sulphate. The alternating distribution of finer-grained sand layers with higher water content and coarser-grained sand layers with lower water content is the reason for the multi-row distribution of the tadpole-shaped microtopography. The formation of tadpole-shaped microtopography can be subdivided into three distinct stages, which develop under four different dynamic conditions. The existence of multiple microtopographies, multiple layers of higher content of water and multiple layers of soluble salts provides robust evidence that this megadune area exhibits a positive water balance. This phenomenon is indicative of atmospheric precipitation that infiltrates the deeper parts of the megadune, resulting in the enrichment of multilayer water within the megadune. Atmospheric precipitation is probably a persistent water source for these lakes, consistent with the widespread spring discharge zones and runoff belts observed along the lake margins. This study is of significant scientific import with regard to the identification of the sources and water cycles of over 140 small lakes in the region, as well as the development of the microtopography.</div></div>","PeriodicalId":55115,"journal":{"name":"Geomorphology","volume":"498 ","pages":"Article 110205"},"PeriodicalIF":3.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tectonic control on incised-valley geometry: Late Pleistocene examples along the longest active fault in Japan","authors":"Susumu Tanabe ,&nbsp;Yoshiro Ishihara ,&nbsp;Ken-ichi Nishiyama ,&nbsp;Yoshiki Sato","doi":"10.1016/j.geomorph.2026.110207","DOIUrl":"10.1016/j.geomorph.2026.110207","url":null,"abstract":"<div><div>Incised valleys beneath present coastal plains likely formed as a result of relative sea-level changes, fluvial discharge, and tectonic activity since MIS 5e. However, tectonic influences have only been discussed qualitatively. This study investigates incised valleys along the Median Tectonic Line (MTL) active fault system, focusing on the Tokushima Plain. Analysis of 2096 borehole logs reveals that soft sediments thicken southward due to muddy deposition by longshore currents, and the 4.5-m-thick Kikai-Akahoya volcanic ash reflects reworked material from the drainage basin. The valley inclines toward the MTL active fault system. A comparison with the Wakayama Plain, also situated along the MTL active fault system across the Kiisuido Strait, shows that both plains share similar geological conditions except for differences in subsidence rate and fluvial discharge. Valley depth and cross-valley gradient correlate with tectonic subsidence, whereas valley width correlates with fluvial discharge, suggesting that discharge is the primary factor controlling valley width.</div></div>","PeriodicalId":55115,"journal":{"name":"Geomorphology","volume":"498 ","pages":"Article 110207"},"PeriodicalIF":3.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tectonic-climatic coupling in extensional landscapes: Quantifying divide migration and erosion-sedimentation feedbacks through bilateral sandbox experiments","authors":"Lei Yan ,&nbsp;Yiquan Li ,&nbsp;Xianyan Wang ,&nbsp;Yuqiong Mao ,&nbsp;Huayu Lu","doi":"10.1016/j.geomorph.2026.110206","DOIUrl":"10.1016/j.geomorph.2026.110206","url":null,"abstract":"<div><div>Spatial variations in tectonic subsidence and precipitation generate fundamental asymmetries in extensional landscapes. Normal faulting, in particular, creates a cross-divide base-level differential that propagates upstream as erosion and downstream as transient sedimentation, yet the ensuring coupled feedbacks remain poorly quantified. This study employs bilateral sandbox experiments, setting different subsidence rates and rainfall intensities, coupled with high-resolution morphometric analysis to discuss the interactions. We demonstrate that drainage patterns diverge based on subsidence, with dendritic networks dominating on high-subsidence flanks through base-level fall and network reorganization, whereas parallel channels persisting under transport-limited, low-subsidence conditions. Divide migration is preferentially directed toward flanks with lower subsidence or precipitation, governed by cross-divide potential energy gradients. Notably, higher precipitation suppresses divide migration rates by enhancing sediment flux, which promotes bedload armoring and inhibits vertical incision. Sediment loading stabilizes landscapes by raising base levels and increasing aggradation. Furthermore, we identify bidirectional orogen-scale coupling, where increased subsidence or rainfall on one flank elevates erosion and sedimentation on the opposite flank. Erosion scales more strongly with tectonic subsidence than with precipitation, as evidenced by doubling the subsidence rate increasing the erosion rate by 125%, whereas a 1.5-fold increase in rainfall intensity enhances erosion by only 13%. Empirical validation against the Qinling Mountains and Micang Shan confirms the control of tectonic forcing over climatic modulation in extensional settings. These findings establish quantitative constraints for drainage reorganization and provide a predictive framework for evaluating landscape responses to asymmetric tectonic-climatic forcing in rift basins.</div></div>","PeriodicalId":55115,"journal":{"name":"Geomorphology","volume":"498 ","pages":"Article 110206"},"PeriodicalIF":3.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatiotemporal sediment dynamics and vegetation recovery of a Mediterranean coastal dune system following an extreme event","authors":"Miquel Mir-Gual,&nbsp;Josep Fortesa,&nbsp;Miquel Tomàs-Burguera,&nbsp;Alexandre Moragues,&nbsp;Julián García-Comendador,&nbsp;Jaume Company,&nbsp;Francisco Cuello,&nbsp;Jaume Servera,&nbsp;Joan Estrany","doi":"10.1016/j.geomorph.2026.110186","DOIUrl":"10.1016/j.geomorph.2026.110186","url":null,"abstract":"<div><div>Coastal dunes in Mediterranean environments are dynamic geomorphic systems playing a crucial role in supporting biodiversity and protecting against coastal erosion, flooding, and sea-level rise. However, these systems are highly sensitive to anthropogenic pressures such as urbanization or land-use changes, which alter sediment dynamics and vegetation cover, ultimately reducing their resilience to environmental stressors. As a result, coastal dunes are particularly sensitive to natural and human-induced disturbances, which can disrupt their ecological and geomorphological equilibrium, posing significant challenges for their conservation. This study examines the spatiotemporal dynamics of Cala Mesquida (Mallorca, Spain), a Mediterranean coastal dune system affected by extreme perturbation and anthropogenic impacts. It analyses the impact of a 2001 coastal storm and evaluates the effectiveness of subsequent dune restoration measures. A multi-decadal assessment spanning 1956–2023 revealed severe impacts, particularly in 2001, with the destruction of the dune front through sediment transport reactivation, and significant vegetation degradation. The implementation in 2009 of nature-based management strategies by means of sediment retention traps and planting of psammophyte vegetation led to the ecosystem recovery and morphological stabilization, highlighting the potential of soft management measures to support ecosystem recovery. Understanding coastal dunes as sensitive terrestrial systems, influenced by both natural and anthropogenic factors, findings emphasize how these systems are particularly vulnerable to disturbances such as coastal storms and human activities and, at the same time, they possess a significant capacity for recovery when supported by appropriate management practices.</div></div>","PeriodicalId":55115,"journal":{"name":"Geomorphology","volume":"497 ","pages":"Article 110186"},"PeriodicalIF":3.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146039597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Control of tectonic uplift and erosion on landscape evolution across the Longmen Shan: Insights from numerical modeling","authors":"Liuye Wang ,&nbsp;Yujun Sun ,&nbsp;Xiaoping Yuan","doi":"10.1016/j.geomorph.2026.110188","DOIUrl":"10.1016/j.geomorph.2026.110188","url":null,"abstract":"<div><div>The Longmen Shan orogenic belt, at the eastern margin of the Tibetan Plateau, is a prominent tectonic deformation zone formed by eastward plateau extrusion against the Sichuan Basin. Marked north-south contrasts exist in landscape morphology, deformation mechanisms, and erosion history, yet their geodynamic origins remain debated. Using numerical models constrained by thermochronological data and geomorphic observations, we evaluated how surface erosion parameters, tectonic uplift velocity, and lithological contrasts shape fluvial landscapes and longitudinal profiles. Without tectonic uplift, differences between the Min River (southern segment) and Fu River (northern segment) profiles can be explained by erosion duration. Starting from an initial topography resembling the modern upper Min River, the landscape requires 5–20 Myr of additional erosion to evolve into one similar to the present-day upper Fu River. This process involves low erosion on the plateau and basin sides but substantial erosion in the intervening orogenic belt, matching spatial patterns in thermochronological ages. The results with tectonic uplift indicate that preserving steep topography in the southern segment requires higher vertical uplift velocity, while lower velocities maintain the subdued northern relief, consistent with present-day uplift patterns. Spatial variations in erosion parameters linked to lithological heterogeneity also influence knickpoint formation and profile segmentation. These results indicate that the geomorphic contrast between the southern and northern Longmen Shan arises from the combined effects of heterogeneous uplift and spatially variable surface processes. Sustaining steep topography since the Miocene requires high uplift velocity in the Minshan region and southern segment of the Longmen Shan, corresponding to the Huya Fault and southern Longmen Shan Fault Zone, likely marking the eastern boundary of the Songpan-Ganzi block.</div></div>","PeriodicalId":55115,"journal":{"name":"Geomorphology","volume":"497 ","pages":"Article 110188"},"PeriodicalIF":3.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An intense peak of paraglacial dismantlement of mountain slopes: Insights from dating and volume quantification of rock-slope failure deposits in the Icelandic Westfjords (Dýrafjörður and Önundarfjörður)","authors":"Emilie Portier ,&nbsp;Denis Mercier ,&nbsp;Armelle Decaulne ,&nbsp;Etienne Cossart","doi":"10.1016/j.geomorph.2026.110170","DOIUrl":"10.1016/j.geomorph.2026.110170","url":null,"abstract":"<div><div>Paraglacial rock slope failures (RSFs) are prominent processes of landscape evolution in deglaciated terrains, such as the Westfjords of Iceland. This study aims to provide chronological and volumetric data on RSF deposits in the Dýrafjörður and Önundarfjörður fjords, in order to document the magnitude, duration, and geomorphic impact of the intense peak of Early and Middle Holocene paraglacial denudation. By refining the timing of a paraglacial signal, this work contributes to a better understanding of sedimentary production and landscape evolution during the Holocene.</div><div>A total of 17 RSFs was studied, described and mapped using the Schmidt-hammer exposure-age dating method, calibrated with radiocarbon dating. Surficial block morphometry and volumetric estimates of RSF deposits were derived from field measurements, orthophotography, and high-resolution digital elevation models.</div><div>RSF ages are concentrated in the Early to Middle Holocene. The vast majority of this activity occurred between 12 and 6 cal. ka BP. During this 6000-year interval, ~83 million m³ of debris were deposited, which accounts for approximately 90% of the total volume (~92.5 M m³) from all 17 RSF sites. This indicates a primary paraglacial adjustment phase characterized by high sediment delivery efficiency. Slope reactivations occurred over periods up to 3400 years, with superimpositions of deposits: these are multi-phased RSFs.</div><div>Finally, a significant lag of approximately 3000 years is observed between the deglaciation (~10.2 cal. ka BP) and the peak in rock-slope failure activity (8–6 cal. ka BP), which coincides with the Holocene Thermal Maximum climax in Iceland (8.6–5.2 cal. ka BP). The subsequent cessation of major RSFs activity after ~4 cal. ka BP marks the transition to a stable, non-glacial equilibrium.</div></div>","PeriodicalId":55115,"journal":{"name":"Geomorphology","volume":"497 ","pages":"Article 110170"},"PeriodicalIF":3.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145996265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lessons learned from a post flood-reconstruction project of an urban stream (Resilient St. Vrain, Longmont, Colorado, USA)","authors":"Sharon Bywater-Reyes ,&nbsp;Antonio Reveles-Hernandez ,&nbsp;Keaton MacMillan ,&nbsp;Sarah Holland ,&nbsp;Mimi Dunda ,&nbsp;Nathan Duggins ,&nbsp;Jeremy Burton","doi":"10.1016/j.geomorph.2026.110161","DOIUrl":"10.1016/j.geomorph.2026.110161","url":null,"abstract":"<div><div>We evaluated the effectiveness of an urban river engineering project by characterizing: 1) geomorphic complexity and bed mobility; 2) vegetation-channel-flow relationships, and 3) the ability to withstand future 100-year flow events for St. Vrain Creek (Longmont, Colorado, USA). As such, we collected physical and ecological parameters within the reconstructed channel. Surveys indicate a coarser grain size than expected for a pool-riffle setting. Slope was as designed (0.003), with local variations correlated to observed grain-size patterns. Shear-stress divergence from hydraulic modeling predicts locations of observed depositional areas, with additional deposition expected in certain areas because of vegetation-flow relationships.</div><div>The reconstructed channel has a narrower, but deeper 100-year flood zone. The revegetation strategy relied on a one-time planting strategy and a plan to remove any naturally recruited vegetation indefinitely. Vegetation surveys indicate outcomes were dependent on timing and variability in replanting, with the highest diversity in the reach restored most recently (Reach 3; index 1.43) followed by the reach restored first (Reach 1A; index 1.11); the former because of more diverse plantings and the latter because of more time for naturally recruited species. However, vegetation roughness was highest (<span><math><mi>n</mi></math></span> = 0.32) in a low-diversity reach (Reach 1B; index of 0.68). Reach 1B additionally showed vegetation characteristics expected to enhance aggradation and is predicted to be inundated by <em>Q</em>_<em>2</em> through <em>Q</em>_<em>100</em> flows, which will enhance morphodynamic interactions. Nevertheless, the channel has the capacity to carry the 100-year flood, showing the flood mitigation goals were met, whereas ecological goals have mixed outcomes.</div></div>","PeriodicalId":55115,"journal":{"name":"Geomorphology","volume":"497 ","pages":"Article 110161"},"PeriodicalIF":3.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146039598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quaternary volcanism and segmented rupture of the Yilan-Yitong Fault Zone, NE China","authors":"Zhongyuan Yu ,&nbsp;Lingqiang Zhao ,&nbsp;Yanlin Yang ,&nbsp;Luwei Li ,&nbsp;Baixu Chen","doi":"10.1016/j.geomorph.2026.110189","DOIUrl":"10.1016/j.geomorph.2026.110189","url":null,"abstract":"<div><div>Although it has been speculated that the Quaternary volcanism may have affected the segmented rupture of active faults, the underlying mechanism remains unknown. The NE-trending, ∼700 km-long Yilan-Yitong Fault Zone (YYFZ), as the main branch of the Tancheng-Lujiang Fault Zone (TLFZ) in NE China, provides a very good laboratory to verify this hypothesis, given its distinct Quaternary volcanic eruptions and segmented late Quaternary activities. The previous study revealed that the Shulan segment of the YYFZ experienced intensive deformation during the Late Quaternary, whereas no surface evidence of tectonic deformation during the Late Quaternary was found in the Yitong segment, despite the greater intensity and spatial distribution of Quaternary volcanic eruptions along the latter. An interesting phenomenon is that the co-seismic surface ruptures of the active segments of the YYFZ “bypassed or terminated” from the Quaternary volcanoes. Thus, the Yitong and the Shulan segments of the YYFZ were selected here to further analyze the relationship between the Quaternary volcanism and segmented ruptures, based on high-resolution satellite image interpretation, large-scale geological and geomorphological mapping, magnetotelluric (MT) detection, trench excavation, and Quaternary chronological testing. The integrated data suggest that Quaternary volcanism influenced the strong earthquake rupture propagation process of the YYFZ. The MT data revealed the existence of hot magma chambers in the deeper part of the Yitong section, however, did not developed in the deeper part of the Shulan section. The underlying magma chambers may influence the rupture propagation process and segmentation of active faults by the mechanism of high-temperature bodies, the heterogeneity of fault structure and mechanical properties near the crater, and diffusion adjustment. This new observation is crucial both for the study of the Quaternary volcanism and segmented rupture of the active faults in NE China, and for the hazard assessment of strong earthquakes in similar tectonic settings worldwide.</div></div>","PeriodicalId":55115,"journal":{"name":"Geomorphology","volume":"497 ","pages":"Article 110189"},"PeriodicalIF":3.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146039596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}