Permafrost Hydrology

Woo, Ming‐ko

doi:10.1007/978-3-642-23462-0

Cited by 274 publications

(260 citation statements)

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“…The soil heat capacity and soil thermal conductivity are estimated using the method developed by Farouki (1981). Permafrost is defined as ground with a temperature at or below 0 • C for at least two consecutive years (Woo, 2012). This study differentiated permafrost from seasonally frozen ground based on the simulated vertical ground temperature profile in each grid.…”

Section: Soil Freezing and Thawingmentioning

confidence: 99%

Change in frozen soils and its effect on regional hydrology, upper Heihe basin, northeastern Qinghai–Tibetan Plateau

et al. 2018

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Abstract. Frozen ground has an important role in regional hydrological cycles and ecosystems, particularly on the Qinghai-Tibetan Plateau (QTP), which is characterized by high elevations and a dry climate. This study modified a distributed, physically based hydrological model and applied it to simulate long-term changes in frozen ground its the effects on hydrology in the upper Heihe basin, northeastern QTP. The model was validated against data obtained from multiple ground-based observations. Based on model simulations, we analyzed spatiotemporal changes in frozen soils and their effects on hydrology. Our results show that the area with permafrost shrank by 8.8 % (approximately 500 km 2 ), predominantly in areas with elevations between 3500 and 3900 m. The maximum depth of seasonally frozen ground decreased at a rate of approximately 0.032 m decade −1 , and the active layer thickness over the permafrost increased by approximately 0.043 m decade −1 . Runoff increased significantly during the cold season (November-March) due to an increase in liquid soil moisture caused by rising soil temperatures. Areas in which permafrost changed into seasonally frozen ground at high elevations showed especially large increases in runoff. Annual runoff increased due to increased precipitation, the base flow increased due to changes in frozen soils, and the actual evapotranspiration increased significantly due to increased precipitation and soil warming. The groundwater storage showed an increasing trend, indicating that a reduction in permafrost extent enhanced the groundwater recharge.

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Section: Soil Freezing and Thawingmentioning

confidence: 99%

Change in frozen soils and its effect on regional hydrology, upper Heihe basin, northeastern Qinghai–Tibetan Plateau

et al. 2018

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“…The hydrology in discontinuous permafrost regions is believed to be particularly sensitive to natural or human-induced climate changes, because of the potential flow exchanges between the water of suprapermafrost and intrapermafrost zones, or with water in non-permafrost areas (Woo, 2012). The Yeniugou (YNG) Basin is located in the upper reaches of the Heihe River of 10 the Qilian-Altun Mountain discontinuous permafrost region in the northern Tibetan Plateau (Fig.…”

Section: Study Areamentioning

confidence: 99%

“…Permafrost can act as an impermeable layer that limits infiltration, storage, and connectivity with deeper regional flow. Then it can lead to a higher hydraulic head in the subpermafrost aquifer and lower hydraulic heads in the suprapermafrost aquifer (Woo, 2012). Later in the thawing period, as the active layer thawing and groundwater table deepen beneath the stream, losing reaches in permafrost areas may become 20 more disconnected between the surface water and groundwater.…”

Section: Implications Of Sw-gw Interaction In Permafrost Regionmentioning

confidence: 99%

“…Significant hydrological changes in permafrost regions have received worldwide attention because water resources and ecosystems are particularly vulnerable to climate change (Bense et al, 2012;Woo, 2012;Walvoord and Kurylyk, 2016). Due to its hydrogeological function as an aquitard, permafrost impacts the movement, storage, and exchange of surface water (SW) and 5 groundwater (GW).…”

Section: Introductionmentioning

confidence: 99%

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Estimating interaction between surface water and groundwater in a permafrost region using heat tracing methods

Gao

Liu

Zhang

et al. 2017

Preprint

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Abstract. Understanding the interactions between groundwater and surface water in permafrost regions is essential to the understanding of flood frequencies and river water quality of high latitude/altitude basins. The application of heat tracing methods, based on oscillating streambed temperature signals, is a promising geophysical method for identifying and quantifying the groundwater and surface water interactions. Analytical analysis based on one-dimensional convectiveconductive heat transport equation combined with the fiber-optic distributed temperature sensing measurements were applied 20 on a streambed of a mountainous permafrost region in the Yeniugou basin of northern Tibetan Plateau. The results indicated that low connectivity between the stream and groundwater in permafrost and active layer. The interaction between surface water and groundwater increased with thawing of the active layer. This study demonstrates that heat tracing method can be applied to study surface water-groundwater interactions over temporal and spatial scales in permafrost regions. 25The Cryosphere Discuss., https://doi

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“…Permafrost is defined as ground with a temperature at or below 0℃for at least two 387 consecutive years (Woo, 2012). This study differentiated permafrost from seasonally runoff ratio remained stable during the 5 decades because of the increased precipitation.…”

mentioning

confidence: 99%

Change in Frozen Soils and its Effect on Regional Hydrology in the Upper Heihe Basin, the Northeast Qinghai-Tibetan Plateau

Gao

Yang

Qin

et al. 2017

Preprint

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Permafrost Hydrology

Cited by 274 publications

References 0 publications

Change in frozen soils and its effect on regional hydrology, upper Heihe basin, northeastern Qinghai–Tibetan Plateau

Change in frozen soils and its effect on regional hydrology, upper Heihe basin, northeastern Qinghai–Tibetan Plateau

Estimating interaction between surface water and groundwater in a permafrost region using heat tracing methods

Change in Frozen Soils and its Effect on Regional Hydrology in the Upper Heihe Basin, the Northeast Qinghai-Tibetan Plateau

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