Yeong Bae Seong

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• Professor
• Professor (Full) at Korea University

The Khukh Lake Basin in the Mongolian Altay represents a characteristics of a tectonically formed lake basin. This study employed a comprehensive morphometric analysis to determine the morphological development, origin, and tectonic influence on the basin. Using topographic maps, satellite imagery, digital elevation models (DEMs), and field measure...

The time and volume of a rock avalanche in the northwestern Tsambagarav Massif, Mongolia is estimated quantitatively in this study. Exposure ages derived from in situ cosmogenic radionuclide (10 Be) indicate that the rock avalanche occurred around 172.49 ± 14.72 ka. This age corresponds to MIS 6, the penultimate glacial period, suggesting that pers...

Earthquake prediction in intraplate regions, such as the Korean Peninsula, is challenging due to the complexity of fault distributions. This study employed diverse methods and data sources to investigate Quaternary surface rupturing along the Yangsan Fault, aiming to understand its long-term earthquake behavior. Paleoseismic data from the Byeokgye...

Geodetic observations over the past several decades identify the Tien Shan as a prominent and active intracontinental mountain belt, characterized by a meridional shortening rate of up to 20 mm/a. The region has experienced significant seismic events, particularly along its northern boundary, highlighting the recurrent seismic activity in the Kyrgy...

The Parker Dunes in western Arizona, USA represent the largest dune system in the Sonoran Desert. This study presents a simple 10Be-26Al cosmogenic burial age of 1.90 ± 0.20 Ma, obtained from well cuttings 240–270 m deep in Butler Valley, just east of the dune field. Given the large errors associated with burial dating, we can only speculate that t...

The youngest tectonic structures in Tibet are a series of grabens trending approximately north-south. However, the grabens in central Tibet are less prominent than those in southern Tibet, which suggests that there is spatial variability in deformation mechanisms. The Chem Co half-graben is situated in the westernmost segment of central Tibet and i...

This study investigates the glacial lake outburst flood (GLOF) hazards in the Tsambagarav mountain range in Western Mongolia, focusing on the Khukhnuruu Valley and its interconnected proglacial lakes. Over the last 30 years, significant glacier retreats, driven by rising temperatures and changing precipitation patterns, have led to the formation an...

Canyon formation is of significant interest in geomorphological studies of flowing waters, yet no studies have been conducted on this subject in Mongolia. Geomorphological methods were used to determine the shape and regularity of the Chuluut River Canyon, which is a major tourist destination. The development of the lava plateau forming the canyon...

Quantifying today's topography can provide insights into landscape evolution and its controls, since present topography represents a cumulative expression of past and present surface processes. The Ulsan Fault Zone (UFZ) is an active fault zone on the southeastern Korean Peninsula that was reactivated as a reverse fault around 5 Ma. The UFZ strikes...

Earthquake prediction in intraplate regions, such as South Korea, is challenging due to the complexity of fault zones. This study employed diverse methods and data sources to detect Quaternary surface rupturing along the Yangsan Fault to improve seismic hazard assessment. Paleoseismic data were analyzed to reveal insights into seismic activity, dis...

The 2017 Pohang earthquake (ML 5.4) ranks as the second-largest instrumental earthquake in the Korean Peninsula and the country’s most destructive seismic event. The earthquake history of the Pohang area prior to the 2017 event is unknown due to the absence of instrumental seismic activity and the lack of mapped Quaternary faults near the 2017 epic...

The lake depressions in the Mongolian Altai Mountains, and the issues related to their formation have yet to be thoroughly examined in previous research. Previous studies primarily focused on the paleogeographical evolution and glaciation dynamics of the Altai Mountains. This study presents relationships between tectonic and glacial processes that...

Quantifying present topography can provide insights into landscape evolution and its controls, as the present topography is a cumulative expression of the types, distributions, and intensities of past and present processes. The Ulsan Fault Zone (UFZ) is an active fault zone on the southeastern Korean Peninsula that has been reactivated as a reverse...

Aeolian deposits are widely distributed globally and important proxies for paleo-climate reconstruction, recording the climatic changes at Quaternary. Aeolian deposits inform changes in wind energy, such as wind speed, which is not easy to be reconstructed directly from other proxy data. The grain size and magnetic susceptibility of the deposits ar...

Langbein and Schumm (1958) connected precipitation to erosion in a right-skewed curve used in earth science textbooks for over six decades, where denudation increases with precipitation on the arid/semiarid limb and decreases in humid regions. Development of the catchment-averaged 10Be denudation method a quarter-century ago led geomorphologists to...

Remote sensing, chronological, and GPR-based studies suggest that the drainage morphology of deltas of peninsular India is controlled by various stages of sea level changes since the Pleistocene. Various fluvial geomorphological changes in coastal environments indicate that sea level fluctuations contribute to modifying the deltaic geomorphology. T...

Mountain glacier mass balance is affected by factors other than climate, such as topography, slope, and aspect. In midlatitude high-mountain regions, the north–south aspect contrast can cause significant changes in insolation and melt, resulting in local asynchrony in glacial dynamics. This study documents the asynchronous response of two paleoglac...

Understanding past environmental changes in the western North Pacific is rather limited due to the general paucity of robust chronology for carbonate‐lacking pelagic clay sediments. Here, we present a new magnetostratigraphy of Quaternary deep‐sea sediments in the northern Mariana Basin. A comprehensive set of paleomagnetic, rock magnetic, and micr...

The origin of relatively high topography in intraplate settings is elusive. The St. Francois Mountains, a tectonically inactive region with high relief, a Mesoproterozoic granite and rhyolite core, and Paleozoic sedimentary flanks, provide insights into the evolution of intraplate landscapes. We determined 14 in situ10Be exposure ages, 23 10Be catc...

The NNW‐striking Mongolian Altai is a Late Cenozoic dextral strike–slip deformation belt affected by the far‐field stress caused by the collision between India and Eurasia. The Tsambagarav Massif is bounded by faults, has a triangular plan shape, and attains the highest elevation of the belt. This massif is adjacent to the central segment of the Ho...

A Holocene sediment record from Chilika Lagoon, India, suggests that changes in climate control denudation and weathering rate change. We assessed climate variability in the region and through time using multiproxy data comprising biotic and abiotic proxies. Mangrove and its associate assemblages suggest a backwater estuarine environment between ∼7...

Most mid-latitude mountain glaciers reached their maximum extent around the global Last Glacial Maximum (gLGM). However, some also strongly responded to the regional climate change or local non-climatic factors such as topography, leading to asynchronous maximum advances. This study documents the maximum extent and chronology of two paleoglaciers i...

In this study, we conducted a geomorphologic analysis, fieldwork, geophysical survey, and trench survey to trace the Quaternary faulting along the northern Yangsan fault. We also complement the study with the Electron Spin Resonance and luminescence datings of the fault rocks and Quaternary sediments, respectively, to constrain the timing of the Qu...

Passive continental margins can show anomalously high topography and exhibit a discrete steep escarpment, divide, and gentle slope from the exterior to the interior of the margin. Compared with active (i.e. convergent and strike-slip) tectonic regions, the processes and rates of change of high-altitude landscapes driven by tectonics and/or climate...

Korea has been recognized as an earthquake-safe zone, but over recent decades, several earthquakes, at a medium scale or higher, have occurred in succession in and around the major fault zones, hence there is a need for studying active faults to mitigate earthquake risks. In Korea, research on active faults has been challenging owing to urbanizatio...

This study documents spatial variations in authigenic 9Be and 10Be concentrations and 10Be/9Be ratios in different glacial settings in the Weddell and Ross seas, Antarctica. Weddell Sea surface sediments have the lowest 10Be and highest 9Be concentrations, and most depleted 10Be/9Be ratios, as compared with other regions, indicating 9Be enrichment...

Authigenic 10Be/9Be dating and 10Be inventory methods have been used as a robust chronological tool to date oceanic sediments as old as ~12 Ma. However, their application was limited to continental sediments deposited in relatively closed lakes. We tested the two methods to examine their applicability to early-Pliocene Bouse Formation in the lower...

This study investigated the Jajpur and Gop faults, which are shallow faults in the Odisha region of the eastern coast of India covered by Quaternary sediments. The characteristics of the subterranean fault were analyzed using coarse tectonic features and underground penetration radar (GPR). The subsurface penetration radar results suggest that the...

The Transantarctic Mountains are an important corridor between the East Antarctic Ice Sheet and the Western Ross Sea, where most current ice streams and outlet glaciers arise. We investigated Ricker Hills, the largest exposed mountainous region between Southern Victoria Land and Terra Nova Bay, and dated the glacial landforms using in-situ cosmogen...

Core sediments from the Chilika Lagoon in the eastern part of the Core Monsoon Zone (CMZ) of India have provided a record of local environmental changes and catchment processes during the past 7800 cal. years B.P. Variations in the rock magnetic parameters (χlf, χhf, χARM and IRM's at varying field strengths) of sediment samples reflect climate-ind...

Understanding the history of Antarctic glaciation is important for interpreting paleoclimatic changes and estimating the changes in climate, sea level, and ice volume in the future. Ice core studies of the East Antarctic Ice Sheet (EAIS) and marine sediment cores from the entire Ross Sea have employed numerous proxies to reconstruct the glacial his...

Tabun-Khara 운석충돌구의 지표기하와 지중 기하를 추정하였다. UAV(Unmanned Aerial Vehicle)를 이용하여 구축한 고해상도 DEM을 토대로 지표기하를 계산하였 다. 지표기하와 지중기하 사이의 관계식과 Amgaa and Koeberl (2009)의 시추 자료를 바탕으로 지중기하를 추정하였다. 그 결과, 운석충돌구의 지름은 1.32km이고, 최대 깊이는 417.8~466.0m임을 알 수 있었다. Tabun-Khara 운석충돌구와 규모가 비슷하며, 기하가 잘 연구된 지구상의 운석충돌구 기하와 비교해보았다. 또한, 달 표면에 발달한 운석충돌구의 지표 및 지중기하의 관계에 대하여 본 연구결과가 잘 부합하...

Quantitative satellite observations only provide an assessment of ice sheet mass loss over the last four decades. To assess long-term drivers of ice sheet change, geological records are needed. Here we present the first millennial-scale reconstruction of David Glacier, the largest East Antarctic outlet glacier in Victoria Land. To reconstruct chang...

The development of geomorphic theory regarding fluvial-system reorganization and drainage basin evolution, resulting from drainage integration, has been slow to progress since the abandonment of Davisian geomorphology in the mid-twentieth century. Central to the development of this theory is an understanding of the processes that allow rivers to cu...

This study documents the variation of Be isotopes (10Be and 9Be) and their ratio (10Be/9Be) from a Ross Sea sediment core (LC42) with relation to mid to late Pleistocene geomagnetic and paleoclimatic changes. Significant changes in Be isotope concentration are observed during pre and post-Mid-Pleistocene Transition (MPT) periods. The 10Be concentra...

Land use changes often lead to soil erosion, land degradation, and environmental deterioration. However, little is known about just how much humans accelerate erosion compared to natural background rates in non-agricultural settings, despite its importance to knowing the magnitude of soil degradation. The lack of understanding of anthropogenic acce...

Raised beaches are amongst the most important and direct indicators of relative sea-level change and timing of degla-ciation in Antarctica. Infrared stimulated luminescence dating of cobble surfaces on two sets of raised beaches in Terra Nova Bay in Victoria Land of Antarctica records relative sea-level change since the Mid-Holocene. This study inc...

The occurrence of global warming and concomitant rises in sea level means it is important to assess the vertical lowering rates and evolution of shore platforms. Most previous studies, however, were based on empirical measurements and limited to the decadal scale, implying there is great necessity to learn about long-term rates of change on rocky c...

––The Gobi-Altai, Mongolia, includes high mountain ranges that have accommodated the compressional stresses derived from the collision between the Eurasian and Indian Plates. The Gurvan Bogd, which is one of the main mountain ranges in the Gobi-Altai, is a restraining bend along the Bogd sinistral fault. Although surface ruptures did not form near...

Queen Creek exemplifies a moderately-sized tributary drainage of the Salt River, central Arizona, USA. In contrast to the exoreic Salt River and its immediate neighbor to the south, the exoreic Gila River, Queen Creek has remained an ephemeral stream, losing its discharge as it debauched from its mountain drainage basin throughout the late Pliocene...

The current and future climate change and human interventions would increase flood and erosion risk in coastal areas, and thus more coastal erosion studies are needed. Here, we used cosmogenic nuclide concentrations along the Dunduri and Dokdo shore platform in Korea combined with numerical modelling to quantify cliff retreat rate and to reconstruc...

Quaternary fault research has mainly been done with the focus of the outcrop and trench to identify the sense and displacement of the fault. Because the result from the outcrop and trench is obtained from exposed sections, the interpretation of fault information is likely to be overestimated or underestimated. Quaternary faulting affected the curre...

Forebergs are landforms characterized by low, elongated ridges or hills rising above the surrounding alluvial fans or floodplains, and are typically formed by folding associated with thrust faulting. Forebergs in the Gobi-Altay range, south-central Mongolia, have developed in the forelands of mountains transpressionally uplifted in restraining bend...

Deriving paleoseismological fault parameters of active faults is essential for earthquake disaster provision. The purpose of this study is to document the fault characteristics of Wonwonsa fault, which was recently reported in the 2nd fault outcrop on the eastern side of the Ulsan fault, and to provide fault parameters, such as the timing of activi...

Jon et al. (2020) document the geographic and geologic landscapes of Mt. Kumgang (38°38´N, 127°59´E) in the DPR Korea and provide a systematic and comprehensive evaluation of the natural- and geo-heritage significance of the region. We argue that Mt. Kumgang, which has a thousand-year-long history of tourism in Korea (Shin, 2016), should be nominat...

The Salt River and Verde River watersheds provide downstream metropolitan Phoenix, Arizona, USA with much of its water supply, and this paper explains how these rivers integrated in an extensional tectonic setting. Near the end of the Pliocene, segments of the proto-Salt and proto-Verde watersheds of central Arizona consisted of local drainage netw...

Evolution of Colorado River has been a center of debate over the last decades among the multiple disciplines of Geo-society, in particular relation to the timing and mode of initiation of Grand Canyon and the uplift of Colorado Plateau. One of the key resources for the debate is a series of alluviums including Bullhead, Santa Fe Railroad, Bat Cave,...

The Korea and Mongolia are located in the intraplate, but show contrasting neotectonic crustal deformation characteristics. Unlike the Korea, which has humid climate and low fault activity, the Mongolia is more likely to preserve the topographic evidence of paleoseismology due to arid climate and high fault activity. The purpose of this study is to...

Foreberg' is a low, elongated ridge or hill with low relief parallel to the main mountain range, rising above the surrounding alluvial fans and floodplains, and is typically formed by thrusting (Florensov and Solonenko, 1963; Bayasgalan et al., 1999; Owen et al., 1999). When hanging wall moves toward the foreland, the vertical displacement of the o...

The post-Last Glacial Maximum (LGM) deglaciation of Antarctica holds important clues for understanding past environmental changes and predicting future changes in the Antarctic Ice Sheet. Cosmogenic nuclide exposure dating of glacial erratics documents the spatial and temporal glacier changes during the most recent deglaciation. We collected 55 err...

Quantitative satellite observations provide a comprehensive assessment of ice sheet mass loss over the last four decades, but limited insights into long-term drivers of ice sheet change. Geological records can extend the observational record and aid our understanding of ice sheet–climate interactions. Here we present the first millennial-scale reco...

The Salt and Verde rivers, Sonoran Desert, USA, integrated multiple endorheic extensional basins near the start of the Quaternary. Integration began via spillover on both rivers. Spillover resulted in headward erosion in upstream basins, leading to basin-wide incision and excavation of large volumes of sediment transported into downstream basins. A...

The assumed Jargalant rockslide is located in Khentey Upland of Mongolia, an area undergoing active tectonic deformation and seismogenic activity but where geomorphic research that connects rock slope failure and long-term paleoseismic events has yet to be conducted. We present the first reconnaissance study on this topic, which demonstrates the po...

The Colorado River's course through Grand Canyon and across the topographic high imposed by the Kaibab Plateau represents one of the most well-known transverse drainages. Only four processes allow a river to flow across a topographic obstruction: antecedence, superimposition, piracy, and overflow. Since Powell first described the canyon in 1875, va...

The Taebaek Mountain Range (TBR) initially formed via extension of a back-arc basin in the East Sea during the early-Miocene (ca. ~22 Ma) and exemplifies a typical escarpment on a passive continental margin. The TBR acts as a major watershed and divide across which topography changes fromgentle western side slopes to steep eastern slopes. Compared...

The rapid warming observed in the western Antarctic Peninsula gives rise to a fast disintegration of ice shelves and thinning and retreat of marine-terminating continental glaciers, which is likely to raise global sea levels in the near future. In order to understand the contemporary changes in context and to provide constraints for hindcasting mod...

Timing and rate of post-LGM deglaciation along the coastline on Ross Sea Antarctica were rev ealed by many surface exposure dating studies. Lowering of glacier thickness was followed by increasing temperature rising sea level or bed-form instability. Most studies revealed that glaci ers along the coasts were rapidly lowered by eustatic sea-level ri...

Batı Antarktika Yarımadası'nda gözlenen hızlı ısınma, deniz buzul kütlelerinin hızlı bir şekilde parçalanmasına ve yakın gelecekte kaçınılmaz bir şekilde küresel deniz seviyelerini yükseltecek olan kıta buzullarının inceltilmesi ve geri çekilmesine neden olmaktadır. Buzullar ile ilgili günümüzdeki gözlemlerin geçmiş verilerle desteklenmesinin yanıs...

The Jangbogo Hills are erratic-covered landforms consisting of a series of benches that are parallel to the length of Campbell Glacier, northern Victoria Land, Antarctica. We sampled 41 erratic cobbles from six benches to reveal the exposure times of glacier erratics using in situ 10 Be and 26 Al. The erratics from the upper three benches yield exp...

Talus flatirons (TFs) are morphostratigraphic markers of prior talus deposition that are now disconnected from the active hillslope. Three generations of TFs (TF1, TF2, TF3) exist flanking a Sonoran Desert inselberg, Rock Peak, in a welded tuff caprocks-controlled landscape bounded by pediments. TFs at Rock Peak enable estimation of slope retreat r...

The Jangbogo Hills are erratic-covered landforms consisting of a series of benches that parallel Campbell Glacier, northern Victoria Land, Antarctica. We sampled erratic cobbles from six benches to reveal the exposure times of glacier erratics using in situ 10Be and 26Al. The erratics from the upper three benches yield exposure ages older than Mari...

The cover photo shows the lake Khagiin Khar in the Khentey Mountains of Central Mongolia. It is located to the north of Tereji National Park, which is the largest one around the capital city, Ulaanbaatar. The Khentey Mountains boast of various kinds of coniferous trees in high elevation and bushes in the dry low land dotted with crystal-clear lakes...

The formation and evolution of glacier moraine-dammed lakes are closely related to past glacier expansion and retreat. Geomorphic markers such as lacustrine terraces and beach ridges observed in these lakes provide important evidence for regional paleoenvironment reconstruction. We document the magnitude of paleo-shoreline fluctuations and timings...

The Yangsan Fault is one of the main fault systems in the Korean peninsula. It can be divided into three segments (northern, central, and southern) by its paleoseismic and structural geologic properties. Based on the geomorphic features of the northern segment, which includes the Yugye Fault, we identified deflected streams as a geomorphic marker o...

Mongolian glaciers have been the subject of relatively little research, resulting in less geochronological constraint than other parts of Central Asia. The Khentey Mountains (latitude 47–51°N, longitude 105–112°E) are a typical landlocked mountain range exhibiting clear geomorphic evidence of late Quaternary glaciation. Yet, compared to western par...

Rock avalanches are one of the fastest type of landslides and because of their magnitude and energy, can cause huge damage over large areas. The purpose of this study is to demonstrate the characteristics of morphology and kinematics of Dead Lakes rock avalanche, Kyrgyzstan and to provide the timing of its occurrence constrained by cosmogenic 10Be...

Mongolian former glaciers have received relatively little attention and less geochronologic dating than the Himalaya, Karakorum and Hindu Kush in Central Asia. Nevertheless, especially Khentey mountains (105-112°E, 47-51°N) represent one of the landlocked mountain systems that has clear geomorphic evidences for late Quaternary glaciation, are less...

We measured meteoric 10Be variation throughout a marine sediment core from the Larsen B embayment (LBE) of the Antarctic Peninsula, and collected in situ 10Be and 14C exposure ages on terrestrial glacial deposits from the northern and southern margins of the LBE. We use these data to reconstruct Last Glacial Maximum (LGM) to present deglaciation an...

Talus flatiron (TF) is a depositional landform consisting of debris detached but currently disconnected from the cliff of table landform (e.g. mesa, butte). Spatially, well-organized multiple sequences of talus flatiron is one of key archives to record the history of accumulation and incision of slope s in dry region which works as basic stratigrap...

The study area, Jargalant rockslide is located ~150 km northwest of the Ulaanbaatar, the capital of Mongolia. The study area in Khentey Upland region, is under active tectonic deformation and seismogenic activity, but geomorphic research on rock slope failure and long-term paleo-seismic event has yet to be conducted. We demonstrate the first reconn...

Identification of bouldery landforms in mountains and correct understanding on their forming processes play an important role in reconstructing geomorphic history of a region. We propose blocks were liberated by frost cracking and wedging of cliff walls during the last glacial period. However, we further suggest and test four hypotheses comprising...

The concentration of cosmogenic 10Be in riverine sediments has been widely used as a proxy for catchment-wide denudation rate (CWDR). One of the key assumptions of this approach is that sediments originating from sub-basins with different erosional histories are well mixed. A tragic debris flow occurred in the Seti River watershed, central Nepal, o...

The concentration of cosmogenic 10Be in riverine sediments has been widely used as a proxy for catchment-wide denudation rate (CWDR). One of the key assumptions of this approach is that sediments originating from sub-basins with different erosional histories are well mixed. A tragic debris flow occurred in the Seti River watershed, central Nepal, o...

Although mountains represent a barrier to the flow of liquid water across our planet and an Earth of impenetrable mountains would have produced a very different geography, many rivers do cross mountain ranges. These transverse drainages cross mountains through one of four general mechanisms: antecedence—the river maintains its course during mountai...

This paper integrates prior scholarship on desert pavements with a case study of pavements on stream terraces in the Sonoran Desert to analyze the processes and site conditions that facilitate the survival of ancient desert pavements. This synthesis identifies vital factors, key factors, and site-specific factors promoting pavement stability. Hyper...

Pediments of the Sonoran Desert in the United States have intrigued physical geographers and geomorphologists for nearly a century. These gently sloping bedrock landforms are a staple of the desert landscape that millions visit each year. Despite the long-lived scientific curiosity, an understanding of the processes operating on the pediment has re...

The Ozark Mountains, Missouri and Arkansas, pose a major geologic and geomorphic anomaly. They form a topographically high, structurally uplifted “block” that exposes buoyant (?) mid-Proterozoic granite-rhyolite basement rocks in the North American mid-continent. The Ste. Genevieve fault bounds the Ozarks on its steepest and structurally highest no...

The processes involved in the development of high-altitude, low-relief areas (HLAs) are still poorly understood. Although cosmogenic nuclides have provided insights into the evolution of HLAs interpreted as paleo-surfaces, most studies focus on estimating how slowly they erode and thereby their relative stability. To understand actual development p...