Hydrodynamic process of Tibetan Plateau lake revealed by grain size: Case study of Pumayum Co

Ju, Jianting; Zhu, Liping; Feng, Jing-Chun; Wang, Junbo; Wang, Yong; Xie, Min; Peng, Ping; Zhen, Xiaolin; Xin-shi, LU

doi:10.1007/s11434-012-5083-5

Cited by 23 publications

(10 citation statements)

References 37 publications

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“…Sedimentological data for Siling Lake indicate the presence of a layer of silt on the surface of shoreline sediments (Shi et al, 2017). A similar grain size distribution was also found in Pumayum Lake, a nearby lake located on the Tibetan Plateau (Ju et al, 2012). We therefore set the median grain diameter as d 50 =20 μm.…”

Section: Wind Wavesmentioning

confidence: 83%

Rapid shoreline flooding enhances water turbidity by sediment resuspension: An example in a large Tibetan lake

Fichot

Bryan

et al. 2020

Earth Surf Processes Landf

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Rapid water level rise due to climate change has the potential to remobilize loose sediments along shorelines and increase the turbidity of nearshore waters, thereby impacting water quality and aquatic ecosystem health. Siling Lake is one of the largest and most rapidly expanding lakes on the Tibetan Plateau. Between 2000 and 2017, this lake experienced an increase in water level of about 8 m and a doubling in water turbidity. Here, using this lake as a study site, we used a wave model and high‐resolution remote sensing of turbidity (Landsat‐8) to assess the potential connection between water‐level rise, enhanced wind‐driven sediment resuspension and water turbidity. Our analysis revealed that strong bottom shear stresses triggered by wind‐generated waves over newly flooded areas were related to an increase in water turbidity. The spatial variability of Siling Lake turbidity showed a strong dependence on local wind characteristics and fetch. Two factors combined to drive the increase in turbidity: (1) high wave energy leading to high bottom shear stresses, and (2) flooding of unvegetated shallow areas. Using a new relationship between wave energy and turbidity developed here, we expect the increase in turbidity of Siling Lake to taper off in the near future due to the steep landscape surrounding the lake that will prevent further flooding. Our results imply that rising water levels along the coast are not only expected to influence terrestrial ecosystems but could also change water quality. The methodology presented herein could be applied to other shorelines affected by a rapid increase in water level. © 2020 John Wiley & Sons, Ltd.

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Section: Wind Wavesmentioning

confidence: 83%

Rapid shoreline flooding enhances water turbidity by sediment resuspension: An example in a large Tibetan lake

Fichot

Bryan

et al. 2020

Earth Surf Processes Landf

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“…distance wind transport implying an arid cold climate (Ju et al, 2012). A similar phase (∼650-350 cal yr BP) has recorded a decline in most broad-leaved taxa and meadow vegetation in the Chandra Valley and has been attributed to a LIA cold-dry climate (Rawat et al, 2015).…”

Section: Late Meghalayan (∼1500 Cal Yr Bp To Present)mentioning

confidence: 84%

Holocene hydroclimatic variability in the Zanskar Valley, Northwestern Himalaya, India

et al. 2020

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A 1.3-m-long sediment core from the Penzi-la pass, Zanskar Valley, provides a record of hydroclimatic conditions and abrupt climate changes over short time scales since the mid-Holocene. These climatic changes of centennial time scale are crucial to understanding the hydroclimatic variability in northwestern (NW) Himalaya. Relatively higher δ13C values complemented by total organic carbon, loss on ignition, grain size parameters, and lower Rubidium/Strontium ratios during the Late Northgrippian imply that the area had a dry climate during the period from ~6200–4500 cal yr BP. Subsequently, a relatively stable hydroclimatic environment was experienced between ~4500 and 3400 cal yr BP. After ~3400 cal yr BP the multiproxy data show gradual strengthening of hydroclimatic conditions, however, this trend is interrupted by high-amplitude abrupt reversals (dry events) with a stepwise decreasing intensity at ~3300, 2600, 1700, and 400 cal yr BP. The two most important climatic events of the last millennia (i.e., Medieval Climate Anomaly and the Little Ice Age) were also recorded from the sedimentary archive. Overall, our data show a progressive increase in the moisture availability in the Zanskar Valley and are in agreement with the late Holocene climatic trends of central and western Himalaya.

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“…The influence of glacier meltwater is more significant than that of summer precipitation for Puma Yum-tso lake, as shown by stable isotopes of lake water in Figure 4. The flow rate of the Jia river close to the estuary, the largest source of runoff for Puma Yum-tso lake, is 761 000 m 3 d– 1 in summer 2005, 77% of the whole supply (Ju and others, 2012). The much larger supply of river water results in less depletion of lake-water δ 18 O in summer, compared with Yamdrok-tso lake, and makes the influence of monsoon precipitation on the lake-water δ 18 O unnoticeable in PumaYum-tso lake.…”

Section: Resultsmentioning

confidence: 99%

“…It covers 284 km 2 (Guan and others, 1984) (Fig. 1) at an elevation of 5030 m, and the basin area is ~1233 km 2 (Ju and others, 2012). The lake depth reaches 60 m but is generally 30-50 m. The annual air temperature is 2-4°C (Wang and Dou, 1998), and the measured multi-year average temperature of lake surface water in the non-ice period is 7.5°C.…”

Section: Study Sites and Sampling Analysismentioning

confidence: 99%

“…The largest river flowing into Puma Yum-tso lake is the Jia river, which is replenished by glacial meltwater. The discharge of the Jia river reached 7.6 x 10 5 m 3 d– 1 in August 2005, accounting for 77% of total inflow into the lake (Ju and others, 2012). The Xiasuo river is another major inflow, flowing northward into the lake.…”

Section: Study Sites and Sampling Analysismentioning

confidence: 99%

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Variations of water stable isotopes (δ¹⁸O) in two lake basins, southern Tibetan Plateau

Gao¹,

Joswiak²

2014

Ann. Glaciol.

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ABSTRACT. d 18O measurements based on systematic sampling and isotopic modeling have been adopted to study the controls of stable isotopes in lake water in two lake basins (lakes Yamdrok-tso and Puma Yumtso) at two different elevations on the southern Tibetan Plateau. Temporally, d 18O values decrease by 0.8% for Yamdrok-tso lake and 0.6% for Puma Yum-tso lake when glacial meltwater contributions to these lakes shrink by 60%. d 18O ratios increase rapidly during the initial stages and take a longer time to approach the equilibrium value.

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Hydrodynamic process of Tibetan Plateau lake revealed by grain size: Case study of Pumayum Co

Cited by 23 publications

References 37 publications

Rapid shoreline flooding enhances water turbidity by sediment resuspension: An example in a large Tibetan lake

Rapid shoreline flooding enhances water turbidity by sediment resuspension: An example in a large Tibetan lake

Holocene hydroclimatic variability in the Zanskar Valley, Northwestern Himalaya, India

Variations of water stable isotopes (δ¹⁸O) in two lake basins, southern Tibetan Plateau

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Hydrodynamic process of Tibetan Plateau lake revealed by grain size: Case study of Pumayum Co

Cited by 23 publications

References 37 publications

Rapid shoreline flooding enhances water turbidity by sediment resuspension: An example in a large Tibetan lake

Rapid shoreline flooding enhances water turbidity by sediment resuspension: An example in a large Tibetan lake

Holocene hydroclimatic variability in the Zanskar Valley, Northwestern Himalaya, India

Variations of water stable isotopes (δ18O) in two lake basins, southern Tibetan Plateau

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Variations of water stable isotopes (δ¹⁸O) in two lake basins, southern Tibetan Plateau