Gengnian Liu

ORCID: 0000-0003-1346-9935
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About
Contact & Profiles
Research Areas
  • Geology and Paleoclimatology Research
  • Cryospheric studies and observations
  • Climate change and permafrost
  • Geological formations and processes
  • Landslides and related hazards
  • Pleistocene-Era Hominins and Archaeology
  • Geological and Geophysical Studies
  • Remote Sensing and Land Use
  • Methane Hydrates and Related Phenomena
  • Arctic and Antarctic ice dynamics
  • Geological Studies and Exploration
  • Geological and Geochemical Analysis
  • Geochemistry and Geologic Mapping
  • earthquake and tectonic studies
  • Environmental Changes in China
  • Hydrology and Watershed Management Studies
  • Geological Modeling and Analysis
  • Marine and environmental studies
  • Polar Research and Ecology
  • Geotechnical and Geomechanical Engineering
  • Winter Sports Injuries and Performance
  • Soil and Unsaturated Flow
  • Hydrocarbon exploration and reservoir analysis
  • Geochemistry and Elemental Analysis
  • Tree-ring climate responses

Peking University
2014-2025

University of Tennessee at Knoxville
2011

Abstract. Rock glaciers are important hydrological reserves in arid and semi-arid regions. Their activity states can indicate the existence of permafrost. To help further explore development mechanisms rock humid transition regions, this paper provides a detailed glacier inventory Guokalariju (also known as Goikarla Rigyu) area Tibetan Plateau (TP) using manual visual interpretation Google Earth Pro remote sensing imagery. We also estimated water volume equivalent (WVEQ) study for first...

10.5194/tc-18-1-2024 article EN cc-by ˜The œcryosphere 2024-01-02

Recent investigations into relict periglacial phenomena in northern and western C hina on the Q inghai– T ibet P lateau provide information for delineating extent of permafrost during L ate leistocene. Polygonal wedge‐shaped structures indicate that, local ast G lacial M aximum ( LLGM , between ∼35 10.5 ka BP ), southern limit latitudinal advanced southward at least to ∼38–40° N east ∼37–39° west. This represents an advance about 5–10° latitude beyond present‐day limits. The lower limits...

10.1111/bor.12049 article EN Boreas 2013-11-04

ABSTRACT This study investigates the late Quaternary glacial history of Cogarbu valley on northern slopes Bhutanese Himalaya using 10 Be surface exposure dating. Five major events were constrained based 28 ages. The equilibrium line altitude (ELA) oldest and most extensive event (M5–M9) is ∼489 m lower than present, followed by four other (M4, M3, M2 M1) with ELA depressions ∼452, ∼200, ∼76 ∼42 m, respectively. ages are ∼23.4–19.1 ka, corresponding to global Last Glacial Maximum (gLGM)....

10.1002/jqs.3079 article EN Journal of Quaternary Science 2018-12-14

Abstract Cosmogenic nuclide surface exposure dating of boulders and erratics provides new constraints for a glacial chronology in the source area Urumqi River, Tian Shan, China. 10 Be ages 15.0 ± 1.3–17.1 1.5 ka from Upper Wangfeng (UWF) moraines agree well with their previous relative age assignments to marine isotope stage (MIS) 2, but are younger than published AMS 14 C electron spin resonance (ESR) (from 22.8 0.6 37.4 ka). This difference may result variations techniques, or could...

10.1002/jqs.1454 article EN Journal of Quaternary Science 2011-03-01

Abstract. Rock glaciers are typical periglacial landforms. They can indicate the existence of permafrost, and also shed light on regional geomorphological climatic conditions under which they may have developed. This article provides first rock glacier inventory Daxue Shan, south-eastern Tibetan Plateau. The is based analyses Google Earth imagery. In total, 295 were identified in covering a total area 55.70 km2 between altitudes 4300 4600 m above sea level. Supported by ArcGIS SPSS software...

10.5194/tc-12-2327-2018 article EN cc-by ˜The œcryosphere 2018-07-16

Abstract Retrogressive Thaw Slumps (RTSs), a form of thermokarst hazards, pose risks to hydrological and ecological environments the safety Qinghai‐Tibet Engineering Corridor. We still lack knowledge about geographic locations RTSs their dynamically changing spatial margins. However, visual interpretation is labor‐intensive while present‐day deep learning methods become ineffective when model trained in one year directly transferred another. To enhance model's generalization ability, here we...

10.1029/2024jh000370 article EN cc-by-nc-nd Journal of Geophysical Research Machine Learning and Computation 2025-02-25

The geochronological dating of glacial landforms, particularly terminal and lateral moraines, is invaluable for determining the extent timing past glaciation reconstructing magnitude rate climate changes. In central Himalayas, well-dated geomorphological records have constrained last cycle around much Mount Everest region. However, eastern Ama Drime Range remains comparatively less constrained.Here, we present a detailed chronology dataset from Marine Oxygen Isotope Stage (MIS) 3...

10.5194/egusphere-egu25-6753 preprint EN 2025-03-14

This study presents the glacial geomorphology and chronology of Gongba Mountain area in Daocheng (28°58'N, 100°23'E), located southeastern sector Tibetan Plateau, an important region influenced by significant climatic oscillations during Quaternary. Utilizing advanced remote sensing technologies, we generate a high-resolution Digital Elevation Model (DEM) with aid Uncrewed Aerial Vehicle (UAV) to map this sector. We supplement our DEM mapping satellite imagery (SPOT, ArcGIS...

10.5194/egusphere-egu25-14401 preprint EN 2025-03-15

ABSTRACT We constrained glacial chronologies in three valleys on the southern slopes of Nalati Range central Tian Shan, China: Takelakete, Aiken and Sairenwuxunsala valleys, using 10 Be surface exposure dating. Our ages constrain events during 72.8 ± 3.8–59.9 3.5 ka, 55.4 3.0–34.9 2.1 0.29 0.17–0.27 0.20 corresponding to Marine Oxygen Isotope Stages (MIS) 4 3, Little Ice Age (LIA), respectively. Glaciers have been restricted from composite valley glaciers piedmont MIS 4–3 confined small LIA,...

10.1002/jqs.2891 article EN Journal of Quaternary Science 2016-09-20

Abstract. Mountain glaciers provide us a window into past climate changes and landscape evolution, but the pattern of glacier evolution at centennial or suborbital timescale remains elusive, especially in monsoonal Himalayas. We simulated Bhutanese Himalaya (BH), typical monsoon-influenced region, during Little Ice Age (LIA) using Open Global Glacier Model driven by six paleoclimate datasets their average. Compared with geomorphologically mapped glacial landforms, model can well capture...

10.5194/tc-16-3739-2022 article EN cc-by ˜The œcryosphere 2022-09-21
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