Article
Geochemistry & Geophysics
Saptarshi Dey, Bodo Bookhagen, Rasmus C. Thiede, Hella Wittmann, Naveen Chauhan, Vikrant Jain, Manfred R. Strecker
Summary: The study reveals significant variations in erosion rates on the southern flanks of the Dhauladhar Range in the western Himalaya under different climatic forcings. During periods of strong monsoon intensity, both moderately steep and high slope areas experience higher erosion rates, while during weak monsoon periods, the erosion rates are lower. Additionally, lithology also influences erosion.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geography, Physical
Arthur Ancrenaz, Stephane Pochat, Emmanuelle Defive, Alexandre Poiraud, Regis Braucher, Vincent Rinterknecht, Johannes Steiger
Summary: The aim of this study was to build a new chronology of Late Pleistocene glacial fluctuations in the Cantal Mountains and Cézallier Plateau. The research utilized the study of glacial landform-sediment assemblages and new exposure ages to identify four glacial stadials. The results enhance the chronostratigraphy of the western Massif Central and demonstrate the area's sensitivity to atmospheric circulation changes.
Article
Geography, Physical
Suresh Das, Madhav Krishna Murari, Milap Chand Sharma, Rakesh Saini, Manoj Kumar Jaiswal, Pavitra Kumar, Pankaj Kumar
Summary: This study reports new progress in the glacial chronology from new sites in the Chandrabhaga basin in the northern Indian Himalayas. Using geomorphological mapping, Infrared Stimulated Luminescence (IRSL), and Be-10 Terrestrial Cosmogenic Nuclide (TCN) surface exposure dating, the late Quaternary glacial history of the region is reconstructed. The study provides the first numerical dating for the oldest glacial stage in the area and reveals the timing and extent of different glacial stages in the past.
QUATERNARY SCIENCE REVIEWS
(2023)
Article
Geosciences, Multidisciplinary
Zsofia Ruszkiczay-Rudiger, Marjan Temovski, Zoltan Kern, Balazs Madarasz, Ivica Milevski, Johannes Lachner, Peter Steier
Summary: A plateau glacier in the Jakupica Mts has been reconstructed, and the study area includes six formerly glaciated valleys. The Be-10 cosmic ray exposure ages suggest that the plateau glacier reached its maximum extent during the Last Glacial Maximum. Glacio-climatological modeling indicates that the region experienced increased moisture advection during this period.
Article
Geography, Physical
Sheikh Nawaz Ali, Priyanka Singh, Prachita Arora, Pinky Bisht, P. Morthekai
Summary: The late Quaternary glacier advances in the Himalayan orogen are influenced by changes in the summer monsoon and winter westerlies. However, the relative contributions of these factors are still debated. This study uses detailed moraine stratigraphy and luminescence dating to investigate glacier advances in the Central Himalaya, revealing that the penultimate advance was more extensive than the Last Glacial Maximum (LGM). The findings suggest a connection between mid-latitude westerlies and glacier advances, and insolation-driven enhanced monsoon periods and deglaciation phases.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Geochemistry & Geophysics
Alexandra Grande, Amanda H. Schmidt, Paul R. Bierman, Lee B. Corbett, Carla Lopez-Lloreda, Jane Willenbring, William H. McDowell, Marc W. Caffee
Summary: This study examined the temporal variability of cosmogenic isotopes Be-10 in river sand from different watersheds in Puerto Rico and found that major landscape disturbing events such as landslides can lower Be-10 concentrations in the sand, impacting the accurate inference of long-term erosion rates.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geography, Physical
Sebastian Munoz-Farias, Benedikt Ritter, Tibor J. Dunai, Jorge Morales-Leal, Eduardo Campos, Richard Spikings, Rodrigo Riquelme
Summary: The pediplains in the Atacama Desert are the result of both climate variability and Andean uplift over a period of more than 17 million years. The evolution of the pediplains is characterized by two episodes of alluvial deposition, drainage capture, and incision, influenced by changes in climate conditions and tectonic activity.
Article
Geography, Physical
Sarah Kamleitner, Susan Ivy-Ochs, Giovanni Monegato, Franco Gianotti, Naki Akcar, Christof Vockenhuber, Marcus Christl, Hans-Arno Synal
Summary: We present a new glacier chronology of the Ticino-Toce glacier in the Southern Alps, reconstructing the timing and extent of its Last Glacial Maximum advance with detailed landform relationships and surface exposure dating. The study reveals that the glacier remained relatively stable with only minor oscillations over a period of approximately 5000 years, and the Verbano piedmont lobe was larger than previously thought. Additionally, the research suggests synchronized glacier advances across the Western Alps, except for the southwestern massifs.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Geography, Physical
Jamey Stutz, Shaun Eaves, Kevin Norton, Klaus M. Wilcken, Claudia Moore, Rob Mckay, Dan Lowry, Kathy Licht, Katelyn Johnson
Summary: Geomorphological records provide insights into the response of glaciers to changing boundary conditions. The study reveals rapid thinning of Byrd Glacier in the past, with simulations suggesting that basal sliding and friction play important roles in glacier thinning.
EARTH SURFACE PROCESSES AND LANDFORMS
(2023)
Article
Geography, Physical
Guocheng Dong, Chaolu Yi, Weijian Zhou, Xiangke Xu, Yunchong Fu
Summary: This study used Be-10 exposure-dating to analyze the late Quaternary glacial history of the Altyn Tagh Range, suggesting that glacier fluctuations may have been driven by various factors, while also being linked to available precipitation.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geography, Physical
Manja Zebre, M. Akif Sarikaya, Uros Stepisnik, Renato R. Colucci, Cengiz Yildirim, Attila Ciner, Adem Candas, Igor Vlahovic, Bruno Tomljenovic, Bojan Matos, Klaus M. Wilcken
Summary: This study reconstructs the extent and timing of past glaciations in the northern Velebit Mt. in Croatia using geomorphological and sedimentological evidence, as well as cosmogenic 36Cl surface exposure dating. The empirical reconstruction suggests that the glaciers likely reached their maximum extent before the global Last Glacial Maximum, correlating with Marine Isotope Stage 5-4. The best-fit simulation indicates a cooling of 8 degrees C and a 10% reduction in precipitation for glaciers of this size to form, although uniform changes in climatological parameters do not completely match all ice margins mapped.
Article
Environmental Sciences
Peng Chen, Zhongbo Yu, Markus Czymzik, Ala Aldahan, Jinguo Wang, Peng Yi, Goran Possnert, Xuegao Chen, Minjie Zheng, Huijun Jin, Dongliang Luo, Qingbai Wu
Summary: The study used meteoric Be-10 isotope measurements on sediments from the Kunlun Pass to investigate hydroclimate changes during the Holocene. It found that Be-10 flux was relatively low in the Early Holocene, increased sharply around 4 ka BP, and remained high during the Late Holocene before slightly decreasing towards present day. The findings suggest a shift in atmospheric circulation patterns in the KP region from a more monsoonal one to one dominated by the Westerlies.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Geosciences, Multidisciplinary
Brittany N. Price, Nathan D. Stansell, Alfonso Fernandez, Joseph M. Licciardi, Alia J. Lesnek, Ariel Munoz, Mary K. Sorensen, Edilia Jaque Castillo, Tal Shutkin, Isabella Ciocca, Ianire Galilea
Summary: The development of robust chronologies of Neoglaciation in the high-altitude Andes can provide valuable insights into regional climate variability and aid in predicting future changes. Unfortunately, records of Late Holocene glaciation in the Central Chilean Andes are limited. In this study, we used a combination of dating techniques to establish a chronology of glacier fluctuations and found evidence of coeval climate variability between the middle and high southern latitudes during the Late Holocene.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geography, Physical
Marie-Luce Chevalier, Anne Replumaz, Shiguang Wang, Jiawei Pan, Mingkun Bai, Kaiyu Li, Haibing Li
Summary: Constraining the timing and extent of past glaciations is important to understand glacier responses to climate change. The study in Southern Tibet found that past glaciations were greatly influenced by spatial and temporal variations in precipitation, resulting in different extent of moraine deposits. The research also revealed variations in extent of Last Glacial Maximum (LGM) and Marine Oxygen Isotope Stage (MIS)-3 moraines in different regions, attributed to spatial differences in precipitation patterns.
Article
Geography, Physical
Simin Peng, Yu li, Hebin Liu, Qin Han, Xinzhong Zhang, Zhuowen Feng, Dawei Chen, Wangting Ye, Yuxin Zhang
Summary: The production, transport, and deposition of dust have significant impacts on regional and global environments, with the Tibetan Plateau playing a crucial role in climate systems. Research suggests that dust transport from the Gobi Desert to the plateau is mainly controlled by the Asian winter monsoon.
PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT
(2022)
Article
Geochemistry & Geophysics
Ian K. D. Pierce, Steven G. Wesnousky, Lewis A. Owen, Jayne M. Bormann, Xinnan Li, Marc Caffee
Summary: Geodesy research shows that a significant amount of dextral shear is accumulating in the Central Walker Lane, where no through-going strike-slip faults exist. The patterns and slip rates of active faults between Lake Tahoe and Walker Lake basins help understand how this shear is accommodated, with different fault types playing a role in releasing the accumulated strain.
Article
Geosciences, Multidisciplinary
Carlos H. Costa, Lewis A. Owen, William J. Johnson, Eric Kirby
Summary: This study focuses on the Sierra Chica Fault System in Argentina, characterizing its Quaternary activity, providing slip rate and seismic hazard data, and highlighting the challenges of applying global scaling laws in this tectonic setting.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Geochemistry & Geophysics
Jeremy M. Rimando, Lindsay M. Schoenbohm, Gustavo Ortiz, Patricia Alvarado, Agostina Venerdini, Lewis A. Owen, Erin G. Seagren, Paula Marques Figueiredo, Sarah Hammer
Summary: This study investigates the seismic history of the Sierras Pampeanas region in Argentina, measuring slip rates on the Las Chacras Fault Zone (LCFZ) using geological and geomorphic measurements, as well as Be-10 dating. The results show that while the uplift rate on the LCFZ is similar to other faults in the region, the shortening rate is lower, consistent with the west-to-east decrease in shortening rates inferred from GPS data.
Article
Geography, Physical
Atul Kumar Singh, Ishita Manna, Pavitra Kumar, Anit Dawar, Pankaj Kumar, Madhav Krishna Murari
Summary: This paper presents an effective method for separating quartz and feldspar. A small amount of fine grained iron powder is used to make feldspar magnetic, and it is then separated from quartz using an isodynamic magnetic separator. Analytical tests have shown that the proposed method achieves a removal rate of feldspar of approximately 95%.
QUATERNARY GEOCHRONOLOGY
(2022)
Article
Nuclear Science & Technology
P. Morthekai, P. Tiwari, M. K. Murari, P. Singh, B. Thakur, M. C. Manoj, S. N. Ali, V. K. Singh, K. Kumar, J. Rai, N. Dubey, P. Srivastava
Summary: This study focused on dating diatom frustules and made progress in extracting frustules without inorganic luminescent grains. The researchers developed a protocol for estimating equivalent dose using the luminescent characterization of diatomite. Luminescence ages were obtained by testing the protocol on two lacustrine profiles. The results were encouraging and showed comparable ages to fine grain polymineral ages.
RADIATION MEASUREMENTS
(2022)
Article
Geochemistry & Geophysics
Sarah E. Johnson, Meredith L. Swallom, Ryan Thigpen, Michael McGlue, Jason M. Dortch, Sean Gallen, Edward Woolery, Kevin M. Yeager
Summary: This study examines the role of topography as a dynamic boundary condition that limits fluvial erosion efficiency in the post-glacial Teton Range landscape. The results show that the volume of post-glacial sediment stored in the canyons and bay is 173.82 +/- 19.5 (x10-3 km3), with a catchment-wide sediment production rate of 0.17 +/- 0.02 mm/yr. The sediment transport efficiency is found to be highly inefficient, indicating that the fluvial system has been disequilibrated by glacial erosion. Additionally, colluvial production rates in the deglaciated valleys are close to long-term denudation and uplift rates.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geography, Physical
Jason M. Dortch, Matt D. Tomkins, Sourav Saha, Madhav K. Murari, Lindsay M. Schoenbohm, Doug Curl
Summary: The application of terrestrial cosmogenic nuclide (TCN) dating in geomorphology faces challenges due to geological uncertainties and skewed TCN age distributions. Existing statistical approaches are not optimized for TCN datasets and struggle with multimodal distributions. To address these limitations, researchers have developed a new approach called Probabilistic Cosmogenic Age Analysis Tool (P-CAAT), which incorporates sample age and geologic uncertainties and eliminates dataset skewness. P-CAAT outperforms other approaches and provides accurate solutions that improve with increasing sample size.
QUATERNARY GEOCHRONOLOGY
(2022)
Article
Environmental Sciences
Suresh Das, Milap Chand Sharma, Madhav Krishna Murari
Summary: This study investigates the elevation change and geodetic mass budget of glaciers in the Jankar Chhu Watershed in the Lahaul Himalaya region, India. The results show spatially heterogeneous elevation change patterns influenced by morphological and topographical settings. The study also highlights the insulating effect of debris thickness on elevation change.
GEOCARTO INTERNATIONAL
(2022)
Article
Environmental Sciences
Suresh Das, Milap Chand Sharma, Madhav Krishna Murari, Marcus Nuesser, Susanne Schmidt
Summary: This study examines glacier and glacier lake changes in the Bhaga basin over the past five decades and finds that the total glacier covered area has decreased by 8.2%, with an increasing melt rate in recent years. The rising temperatures and decreasing precipitation may have accelerated ice loss in the region.
JOURNAL OF MOUNTAIN SCIENCE
(2023)
Article
Environmental Sciences
Matthew. M. M. Crawford, Jason. M. M. Dortch, Hudson. J. J. Koch, Yichuan Zhu, William. C. C. Haneberg, Zhenming Wang, L. Sebastian Bryson
Summary: This study assessed risk modeling in a landslide-prone region of eastern Kentucky, USA, using variable quality data, showing 64.1% of the study area classified as moderate to high socioeconomic risk. Changes in hazard and exposure inputs significantly impact the quality and applicability of risk maps, demonstrating a range of risk modeling approaches.
Article
Geosciences, Multidisciplinary
Thomas K. K. Rockwell, Carlos H. H. Costa, Andrew J. J. Meigs, Daniel Ragona, Lewis A. A. Owen, Madhav Krishna Murari, Eulalia Masana, Andres D. Richard
Summary: Excavated trenches in the Precordilleran region south of San Juan, Argentina, reveal the earthquake history of the area. The recurrence interval along the Marquesado-La Rinconada fault zone is several thousand years, and older events seem to be larger than the youngest event.
FRONTIERS IN EARTH SCIENCE
(2022)
Correction
Environmental Sciences
Suresh Das, Milap Chand Sharma, Madhav Krishna Murari, Marcus Nuesser, Susanne Schmidt
Summary: The original online version of the article has been revised due to an error in the placement of the watershed names Bhaga Upper and Bhaga Lower in Fig. 10. Fig. 10 has now been corrected.
JOURNAL OF MOUNTAIN SCIENCE
(2023)
Article
Geography, Physical
Suresh Das, Madhav Krishna Murari, Milap Chand Sharma, Rakesh Saini, Manoj Kumar Jaiswal, Pavitra Kumar, Pankaj Kumar
Summary: This study reports new progress in the glacial chronology from new sites in the Chandrabhaga basin in the northern Indian Himalayas. Using geomorphological mapping, Infrared Stimulated Luminescence (IRSL), and Be-10 Terrestrial Cosmogenic Nuclide (TCN) surface exposure dating, the late Quaternary glacial history of the region is reconstructed. The study provides the first numerical dating for the oldest glacial stage in the area and reveals the timing and extent of different glacial stages in the past.
QUATERNARY SCIENCE REVIEWS
(2023)
Article
Multidisciplinary Sciences
Qing Yan, Lewis A. Owen, Chuncheng Guo, Zhongshi Zhang, Jinzhe Zhang, Huijun Wang
Summary: This study examines the extent of glaciations during MIS 3 and MIS 2 across the Tian Shan region. The results show that MIS 2 had more extensive glaciations, largely due to enhanced summer cooling. MIS 3 glaciations may have occurred in individual glacier catchments. The findings suggest synchronicity with the timing of maximum Northern Hemisphere ice sheets during the last glacial.
FUNDAMENTAL RESEARCH
(2023)