Characterization and evaluation of permafrost thawing using GPR attributes in the Qinghai-Tibet Plateau

Shen, Yupeng; Zuo, Ruifang; Liu, Jiankun; Tian, Yuan; Wang, Qing

doi:10.1016/j.coldregions.2018.03.028

Cited by 12 publications

(12 citation statements)

References 43 publications

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“…The Tibetan Plateau, with an area of 2.5 × 10 6 km 2 and an average altitude exceeding 4,000 m, is the largest and highest plateau on earth, and permafrost in the Tibetan Plateau covers approximately 1.5 × 10 6 km 2 (Shen et al 2018). The properties of frozen soil on the Tibetan Plateau have changed dramatically because of climate change.…”

Section: Introductionmentioning

confidence: 99%

Hydrological impacts of interannual variations in surface soil freezing processes in the upper Nu–Salween River basin

Luo

Fan

et al. 2020

Arctic, Antarctic, and Alpine Research

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The upper Nu-Salween River basin in the Tibetan Plateau is mainly covered with seasonal frozen soils. We used daily surface freeze-thaw states, detected from Special Sensor Microwave/Imager (SSM/I) daily brightness temperature data, to analyze the variations in surface freeze-thaw states and the relationship with air temperature. We also examined baseflow to explore the influences of interannual variations in the start time of soil freezing on hydrological processes. The results showed that (1) interannual air temperature fluctuations led to differences in the area and start time of surface freezing. When surface soil froze, flow was mainly dependent on existing groundwater storage. (2) The interannual variation in the surface freezing time directly affected the flow generation processes. When soil water froze and remained in the frozen layer, it was hard to generate surface flow, so flow mainly consisted of baseflow, causing the proportion of the baseflow in the total flow to gradually increase. (3) The surface freeze-thaw states obtained from the passive microwave remote sensing data may be applied to support further research on the hydrological impacts of freeze-thaw cycle variations in plateau mountain basins.

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Section: Introductionmentioning

confidence: 99%

Hydrological impacts of interannual variations in surface soil freezing processes in the upper Nu–Salween River basin

Luo

Fan

et al. 2020

Arctic, Antarctic, and Alpine Research

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“…The dielectric constant can be calculated if the buried depth of the target and the two-way travel time of the electromagnetic wave is known [68]. This method is mostly used in practice to estimate the dielectric constant of the mixture of actual surveys; for example, the dielectric constant of permafrost and active layer calculated by this method can inversely deduce the ice content of permafrost and the water content of the active layer [50,54,55,57].…”

Section: Working Principle Of Gprmentioning

confidence: 99%

“…The other is to research the impact of the presence and degradation of permafrost on engineering facilities (highways, railways, airports, pipelines, etc.) in these regions [56][57][58][59][60]. The QTH has been seriously deformed or even damaged due to changes in the properties of the underlying permafrost.…”

Section: Introductionmentioning

confidence: 99%

Damage Properties of the Block-Stone Embankment in the Qinghai–Tibet Highway Using Ground-Penetrating Radar Imagery

Chen

et al. 2022

Remote Sensing

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The block-stone embankment is a special type of embankment widely used to protect the stability of the underlying warm and ice-rich permafrost. Under the influence of multiple factors, certain damages will still occur in the block-stone embankment after a period of operation, which may weaken or destroy its cooling function, introducing more serious damages to the Qinghai–Tibet Highway (QTH). Ground-penetrating radar (GPR), a nondestructive testing technique, was adopted to investigate the damage properties of the damaged block-stone embankment. GPR imagery, together with the other data and methods (structural characteristics, field survey data, GPR parameters, etc.), indicated four categories of damage: (i) loosening of the upper sand-gravel layer; (ii) loosening of the block-stone layer; (iii) settlement of the block-stone layer; and (iv) dense filling of the block-stones layer. The first two conditions were widely distributed, whereas the settlement and dense filling of the block-stone layer were less so, and the other combined damages also occurred frequently. The close correlation between the different damages indicated a causal relationship. A preliminary discussion of these observations about the influences on the formation of the damage of the block-stone embankment is included. The findings provide some points of reference for the future construction and maintenance of block-stone embankments in permafrost regions.

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“…Huisman [14] et al used the WARR method to apply 225 MHz and 450 MHz antennas respectively to determine the water content of the soil based on the slope of the ground wave. Shen et al [15] improved the Topp formula using the GPR instantaneous quality factor attribute to study the relative water content of frozen soil. However, these studies also have the following problems.…”

Section: Introductionmentioning

confidence: 99%

Calculation and Interpretation of Ground Penetrating Radar for Temperature and Relative Water Content of Seasonal Permafrost in Qinghai-Tibet Platea

Wang

Shen

2019

Electronics

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Due to the seasonal permafrost thawing, the Qinghai-Tibet Highway has a depression and instability of the roadbed. In order to obtain the ablation interface and water content characteristics of seasonal permafrost areas, non-destructive ground penetrating radars using electromagnetic wave detection methods are widely used. Regarding the imaging of the ablation interface in permafrost regions, this paper proposes a high-precision procedure for seasonal permafrost media using waveform difference analysis, electromagnetic wave attenuation attribute calculation and relative wave impedance conversion. It improves the resolution and division accuracy of the imaging. In addition, the study demonstrates a method to calculate the temperature and water content of the ablation zone by mining attenuation attribute, relative wave impedance attribute, absolute instantaneous amplitude attribute and the weighted average frequency attribute parameters under the constraints of the measured data. This method has high accuracy and high efficiency and can be used in the rapid calculation of temperature and water content of seasonal permafrost on the Qinghai-Tibet Highway.

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Characterization and evaluation of permafrost thawing using GPR attributes in the Qinghai-Tibet Plateau

Cited by 12 publications

References 43 publications

Hydrological impacts of interannual variations in surface soil freezing processes in the upper Nu–Salween River basin

Hydrological impacts of interannual variations in surface soil freezing processes in the upper Nu–Salween River basin

Damage Properties of the Block-Stone Embankment in the Qinghai–Tibet Highway Using Ground-Penetrating Radar Imagery

Calculation and Interpretation of Ground Penetrating Radar for Temperature and Relative Water Content of Seasonal Permafrost in Qinghai-Tibet Platea

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