Articles | Volume 14, issue 6
https://doi.org/10.5194/tc-14-1875-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-14-1875-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
12 Jun 2020
Research article |
| 12 Jun 2020
| 12 Jun 2020
Global Positioning System interferometric reflectometry (GPS-IR) measurements of ground surface elevation changes in permafrost areas in northern Canada
Jiahua Zhang
CORRESPONDING AUTHOR
Earth System Science Programme, Faculty of Science, The Chinese
University of Hong Kong, Hong Kong SAR, China
Earth System Science Programme, Faculty of Science, The Chinese
University of Hong Kong, Hong Kong SAR, China
Yufeng Hu
College of Geology Engineering and Geomatics, Chang'an University,
Xian, 710054, China
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Jiahua Zhang, Lin Liu, Lei Su, and Tao Che
The Cryosphere, 15, 3021–3033, https://doi.org/10.5194/tc-15-3021-2021, https://doi.org/10.5194/tc-15-3021-2021, 2021
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We improve the commonly used GPS-IR algorithm for estimating surface soil moisture in permafrost areas, which does not consider the bias introduced by seasonal surface vertical movement. We propose a three-in-one framework to integrate the GPS-IR observations of surface elevation changes, soil moisture, and snow depth at one site and illustrate it by using a GPS site in the Qinghai–Tibet Plateau. This study is the first to use GPS-IR to measure environmental variables in the Tibetan Plateau.
Kathrin Maier, Zhuoxuan Xia, Lin Liu, Mark J. Lara, Jurjen van der Sluijs, Philipp Bernhard, and Irena Hajnsek
EGUsphere, https://doi.org/10.5194/egusphere-2025-2187, https://doi.org/10.5194/egusphere-2025-2187, 2025
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Our study explores how thawing permafrost on the Qinghai-Tibet Plateau triggers landslides, mobilising stored carbon. Using satellite data from 2011 to 2020, we measured soil erosion, ice loss, and carbon mobilisation. While current impacts are modest, increasing landslide activity suggests future significance. This research underscores the need to understand permafrost thaw's role in carbon dynamics and climate change.
Zhangyu Sun, Yan Hu, Adina Racoviteanu, Lin Liu, Stephan Harrison, Xiaowen Wang, Jiaxin Cai, Xin Guo, Yujun He, and Hailun Yuan
Earth Syst. Sci. Data, 16, 5703–5721, https://doi.org/10.5194/essd-16-5703-2024, https://doi.org/10.5194/essd-16-5703-2024, 2024
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We propose a new dataset, TPRoGI (v1.0), encompassing rock glaciers in the entire Tibetan Plateau. We used a neural network, DeepLabv3+, and images from Planet Basemaps. The inventory identified 44 273 rock glaciers, covering 6 000 km2, mainly at elevations of 4000 to 5500 m a.s.l. The dataset, with details on distribution and characteristics, aids in understanding permafrost distribution, mountain hydrology, and climate impacts in High Mountain Asia, filling a knowledge gap.
Yan Hu, Stephan Harrison, Lin Liu, and Joanne Laura Wood
The Cryosphere, 17, 2305–2321, https://doi.org/10.5194/tc-17-2305-2023, https://doi.org/10.5194/tc-17-2305-2023, 2023
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Rock glaciers are considered to be important freshwater reservoirs in the future climate. However, the amount of ice stored in rock glaciers is poorly quantified. Here we developed an empirical model to estimate ice content in rock the glaciers in the Khumbu and Lhotse valleys, Nepal. The modelling results confirmed the hydrological importance of rock glaciers in the study area. The developed approach shows promise in being applied to permafrost regions to assess water storage of rock glaciers.
Zhuoxuan Xia, Lingcao Huang, Chengyan Fan, Shichao Jia, Zhanjun Lin, Lin Liu, Jing Luo, Fujun Niu, and Tingjun Zhang
Earth Syst. Sci. Data, 14, 3875–3887, https://doi.org/10.5194/essd-14-3875-2022, https://doi.org/10.5194/essd-14-3875-2022, 2022
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Retrogressive thaw slumps are slope failures resulting from abrupt permafrost thaw, and are widely distributed along the Qinghai–Tibet Engineering Corridor. The potential damage to infrastructure and carbon emission of thaw slumps motivated us to obtain an inventory of thaw slumps. We used a semi-automatic method to map 875 thaw slumps, filling the knowledge gap of thaw slump locations and providing key benchmarks for analysing the distribution features and quantifying spatio-temporal changes.
Xiaowen Wang, Lin Liu, Yan Hu, Tonghua Wu, Lin Zhao, Qiao Liu, Rui Zhang, Bo Zhang, and Guoxiang Liu
Nat. Hazards Earth Syst. Sci., 21, 2791–2810, https://doi.org/10.5194/nhess-21-2791-2021, https://doi.org/10.5194/nhess-21-2791-2021, 2021
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We characterized the multi-decadal geomorphic changes of a low-angle valley glacier in the East Kunlun Mountains and assessed the detachment hazard influence. The observations reveal a slow surge-like dynamic pattern of the glacier tongue. The maximum runout distances of two endmember avalanche scenarios were presented. This study provides a reference to evaluate the runout hazards of low-angle mountain glaciers prone to detachment.
Jiahua Zhang, Lin Liu, Lei Su, and Tao Che
The Cryosphere, 15, 3021–3033, https://doi.org/10.5194/tc-15-3021-2021, https://doi.org/10.5194/tc-15-3021-2021, 2021
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We improve the commonly used GPS-IR algorithm for estimating surface soil moisture in permafrost areas, which does not consider the bias introduced by seasonal surface vertical movement. We propose a three-in-one framework to integrate the GPS-IR observations of surface elevation changes, soil moisture, and snow depth at one site and illustrate it by using a GPS site in the Qinghai–Tibet Plateau. This study is the first to use GPS-IR to measure environmental variables in the Tibetan Plateau.
Enze Zhang, Lin Liu, and Lingcao Huang
The Cryosphere, 13, 1729–1741, https://doi.org/10.5194/tc-13-1729-2019, https://doi.org/10.5194/tc-13-1729-2019, 2019
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Conventionally, calving front positions have been manually delineated from remote sensing images. We design a novel method to automatically delineate the calving front positions of Jakobshavn Isbræ based on deep learning, the first of this kind for Greenland outlet glaciers. We generate high-temporal-resolution (about two measurements every month) calving fronts, demonstrating our methodology can be applied to many other tidewater glaciers through this successful case study on Jakobshavn Isbræ.
YiBin Yao and YuFeng Hu
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Jiangjun Ran, Miren Vizcaino, Pavel Ditmar, Michiel R. van den Broeke, Twila Moon, Christian R. Steger, Ellyn M. Enderlin, Bert Wouters, Brice Noël, Catharina H. Reijmer, Roland Klees, Min Zhong, Lin Liu, and Xavier Fettweis
The Cryosphere, 12, 2981–2999, https://doi.org/10.5194/tc-12-2981-2018, https://doi.org/10.5194/tc-12-2981-2018, 2018
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To accurately predict future sea level rise, the mechanisms driving the observed mass loss must be better understood. Here, we combine data from the satellite gravimetry, surface mass balance, and ice discharge to analyze the mass budget of Greenland at various temporal scales. This study, for the first time, suggests the existence of a substantial meltwater storage during summer, with a peak value of 80–120 Gt in July. We highlight its importance for understanding ice sheet mass variability
Yibin Yao, Xingyu Xu, and Yufeng Hu
Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2018-227, https://doi.org/10.5194/amt-2018-227, 2018
Revised manuscript not accepted
Lin Liu and Kristine M. Larson
The Cryosphere, 12, 477–489, https://doi.org/10.5194/tc-12-477-2018, https://doi.org/10.5194/tc-12-477-2018, 2018
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We demonstrate the use of reflected GPS signals to measure elevation changes over a permafrost area in northern Alaska. For the first time, we construct a daily-sampled time series of elevation changes over 12 summers. Our results show regular thaw subsidence within each summer and a secular subsidence trend of 0.3 cm per year. This method promises a new way to utilize GPS data in cold regions for studying frozen ground consistently and sustainably over a long time.
Xiaowen Wang, Lin Liu, Lin Zhao, Tonghua Wu, Zhongqin Li, and Guoxiang Liu
The Cryosphere, 11, 997–1014, https://doi.org/10.5194/tc-11-997-2017, https://doi.org/10.5194/tc-11-997-2017, 2017
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Rock glaciers are abundant in high mountains in western China but have been ignored for 20 years. We used a new remote-sensing-based method to map active rock glaciers in the Chinese part of the Tien Shan and compiled an inventory of 261 active rock glaciers and included quantitative information about their locations, geomorphic parameters, and downslope velocities. Our dataset suggests that the lower limit of permafrost there is 2500–2800 m.
Yibin Yao, Yufeng Hu, Chen Yu, Bao Zhang, and Jianjian Guo
Nonlin. Processes Geophys., 23, 127–136, https://doi.org/10.5194/npg-23-127-2016, https://doi.org/10.5194/npg-23-127-2016, 2016
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By considering the diurnal variations in zenith tropospheric delay (ZTD) and modifying the model expansion function, we developed an improved global empirical ZTD model GZTD2 with higher temporal and spatial resolutions compared to our previous GZTD model. The external validation testing with IGS ZTD data shows the bias and rms for GZTD2 are −0.3 and 3.9 cm respectively, indicating higher accuracy and reliability for geodesy technology compared to GZTD and other commonly used ZTD models.
L. Liu, K. Schaefer, A. Gusmeroli, G. Grosse, B. M. Jones, T. Zhang, A. D. Parsekian, and H. A. Zebker
The Cryosphere, 8, 815–826, https://doi.org/10.5194/tc-8-815-2014, https://doi.org/10.5194/tc-8-815-2014, 2014
L. Liu, C. I. Millar, R. D. Westfall, and H. A. Zebker
The Cryosphere, 7, 1109–1119, https://doi.org/10.5194/tc-7-1109-2013, https://doi.org/10.5194/tc-7-1109-2013, 2013
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Discipline: Frozen ground | Subject: Remote Sensing
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The Cryosphere, 18, 4703–4722, https://doi.org/10.5194/tc-18-4703-2024, https://doi.org/10.5194/tc-18-4703-2024, 2024
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Lakes are common features in Arctic permafrost areas. Land cover change following their drainage needs to be monitored since it has implications for ecology and the carbon cycle. Satellite data are key in this context. We compared a common vegetation index approach with a novel land-cover-monitoring scheme. Land cover information provides specific information on wetland features. We also showed that the bioclimatic gradients play a significant role after drainage within the first 10 years.
Taha Sadeghi Chorsi, Franz J. Meyer, and Timothy H. Dixon
The Cryosphere, 18, 3723–3740, https://doi.org/10.5194/tc-18-3723-2024, https://doi.org/10.5194/tc-18-3723-2024, 2024
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The active layer thaws and freezes seasonally. The annual freeze–thaw cycle of the active layer causes significant surface height changes due to the volume difference between ice and liquid water. We estimate the subsidence rate and active-layer thickness (ALT) for part of northern Alaska for summer 2017 to 2022 using interferometric synthetic aperture radar and lidar. ALT estimates range from ~20 cm to larger than 150 cm in area. Subsidence rate varies between close points (2–18 mm per month).
Federico Agliardi, Chiara Crippa, Daniele Codara, and Federico Franzosi
EGUsphere, https://doi.org/10.5194/egusphere-2024-1589, https://doi.org/10.5194/egusphere-2024-1589, 2024
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We propose a novel, semi-automatic methodology that combines DInSAR wrapped phase deformation signals, available information on permafrost extent, geomorphological data and multivariate statistics to characterize the state of activity of 514 periglacial landforms over 1000 km2 in Upper Valtellina (Italian Central Alps). We demonstrate the potential of raw SAR interferometric data to rapidly update periglacial landform inventories and track the evolution of the alpine cryosphere.
Jurjen van der Sluijs, Steven V. Kokelj, and Jon F. Tunnicliffe
The Cryosphere, 17, 4511–4533, https://doi.org/10.5194/tc-17-4511-2023, https://doi.org/10.5194/tc-17-4511-2023, 2023
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There is an urgent need to obtain size and erosion estimates of climate-driven landslides, such as retrogressive thaw slumps. We evaluated surface interpolation techniques to estimate slump erosional volumes and developed a new inventory method by which the size and activity of these landslides are tracked through time. Models between slump area and volume reveal non-linear intensification, whereby model coefficients improve our understanding of how permafrost landscapes may evolve over time.
Konstantin Muzalevskiy, Zdenek Ruzicka, Alexandre Roy, Michael Loranty, and Alexander Vasiliev
The Cryosphere, 17, 4155–4164, https://doi.org/10.5194/tc-17-4155-2023, https://doi.org/10.5194/tc-17-4155-2023, 2023
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A new all-weather method for determining the frozen/thawed (FT) state of soils in the Arctic region based on satellite data was proposed. The method is based on multifrequency measurement of brightness temperatures by the SMAP and GCOM-W1/AMSR2 satellites. The created method was tested at sites in Canada, Finland, Russia, and the USA, based on climatic weather station data. The proposed method identifies the FT state of Arctic soils with better accuracy than existing methods.
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We explore lake ice in the Old Crow Flats, Yukon, Canada, using a novel approach that employs radar imagery and deep learning. Results indicate an 11 % increase in the fraction of lake ice that grounds between 1992/1993 and 2020/2021. We believe this is caused by widespread lake drainage and fluctuations in water level and snow depth. This transition is likely to have implications for permafrost beneath the lakes, with a potential impact on methane ebullition and the regional carbon budget.
Lingxiao Wang, Lin Zhao, Huayun Zhou, Shibo Liu, Erji Du, Defu Zou, Guangyue Liu, Yao Xiao, Guojie Hu, Chong Wang, Zhe Sun, Zhibin Li, Yongping Qiao, Tonghua Wu, Chengye Li, and Xubing Li
The Cryosphere, 16, 2745–2767, https://doi.org/10.5194/tc-16-2745-2022, https://doi.org/10.5194/tc-16-2745-2022, 2022
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Selin Co has exhibited the greatest increase in water storage among all the lakes on the Tibetan Plateau in the past decades. This study presents the first attempt to quantify the water contribution of ground ice melting to the expansion of Selin Co by evaluating the ground surface deformation since terrain surface settlement provides a
windowto detect the subsurface ground ice melting. Results reveal that ground ice meltwater contributed ~ 12 % of the lake volume increase during 2017–2020.
Aldo Bertone, Chloé Barboux, Xavier Bodin, Tobias Bolch, Francesco Brardinoni, Rafael Caduff, Hanne H. Christiansen, Margaret M. Darrow, Reynald Delaloye, Bernd Etzelmüller, Ole Humlum, Christophe Lambiel, Karianne S. Lilleøren, Volkmar Mair, Gabriel Pellegrinon, Line Rouyet, Lucas Ruiz, and Tazio Strozzi
The Cryosphere, 16, 2769–2792, https://doi.org/10.5194/tc-16-2769-2022, https://doi.org/10.5194/tc-16-2769-2022, 2022
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We present the guidelines developed by the IPA Action Group and within the ESA Permafrost CCI project to include InSAR-based kinematic information in rock glacier inventories. Nine operators applied these guidelines to 11 regions worldwide; more than 3600 rock glaciers are classified according to their kinematics. We test and demonstrate the feasibility of applying common rules to produce homogeneous kinematic inventories at global scale, useful for hydrological and climate change purposes.
Philipp Bernhard, Simon Zwieback, Nora Bergner, and Irena Hajnsek
The Cryosphere, 16, 1–15, https://doi.org/10.5194/tc-16-1-2022, https://doi.org/10.5194/tc-16-1-2022, 2022
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We present an investigation of retrogressive thaw slumps in 10 study sites across the Arctic. These slumps have major impacts on hydrology and ecosystems and can also reinforce climate change by the mobilization of carbon. Using time series of digital elevation models, we found that thaw slump change rates follow a specific type of distribution that is known from landslides in more temperate landscapes and that the 2D area change is strongly related to the 3D volumetric change.
Simon Zwieback and Franz J. Meyer
The Cryosphere, 15, 2041–2055, https://doi.org/10.5194/tc-15-2041-2021, https://doi.org/10.5194/tc-15-2041-2021, 2021
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Thawing of ice-rich permafrost leads to subsidence and slumping, which can compromise Arctic infrastructure. However, we lack fine-scale maps of permafrost ground ice, chiefly because it is usually invisible at the surface. We show that subsidence at the end of summer serves as a
fingerprintwith which near-surface permafrost ground ice can be identified. As this can be done with satellite data, this method may help improve ground ice maps and thus sustainably steward the Arctic.
Andreas Kääb, Tazio Strozzi, Tobias Bolch, Rafael Caduff, Håkon Trefall, Markus Stoffel, and Alexander Kokarev
The Cryosphere, 15, 927–949, https://doi.org/10.5194/tc-15-927-2021, https://doi.org/10.5194/tc-15-927-2021, 2021
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We present a map of rock glacier motion over parts of the northern Tien Shan and time series of surface speed for six of them over almost 70 years.
This is by far the most detailed investigation of this kind available for central Asia.
We detect a 2- to 4-fold increase in rock glacier motion between the 1950s and present, which we attribute to atmospheric warming.
Relative to the shrinking glaciers in the region, this implies increased importance of periglacial sediment transport.
Ingmar Nitze, Sarah W. Cooley, Claude R. Duguay, Benjamin M. Jones, and Guido Grosse
The Cryosphere, 14, 4279–4297, https://doi.org/10.5194/tc-14-4279-2020, https://doi.org/10.5194/tc-14-4279-2020, 2020
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In summer 2018, northwestern Alaska was affected by widespread lake drainage which strongly exceeded previous observations. We analyzed the spatial and temporal patterns with remote sensing observations, weather data and lake-ice simulations. The preceding fall and winter season was the second warmest and wettest on record, causing the destabilization of permafrost and elevated water levels which likely led to widespread and rapid lake drainage during or right after ice breakup.
Eike Reinosch, Johannes Buckel, Jie Dong, Markus Gerke, Jussi Baade, and Björn Riedel
The Cryosphere, 14, 1633–1650, https://doi.org/10.5194/tc-14-1633-2020, https://doi.org/10.5194/tc-14-1633-2020, 2020
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In this research we present the results of our satellite analysis of a permafrost landscape and periglacial landforms in mountainous regions on the Tibetan Plateau. We study seasonal and multiannual surface displacement processes, such as the freezing and thawing of the ground, seasonally accelerated sliding on steep slopes, and continuous permafrost creep. This study is the first step of our goal to create an inventory of actively moving landforms within the Nyainqêntanglha range.
Andrew M. Cunliffe, George Tanski, Boris Radosavljevic, William F. Palmer, Torsten Sachs, Hugues Lantuit, Jeffrey T. Kerby, and Isla H. Myers-Smith
The Cryosphere, 13, 1513–1528, https://doi.org/10.5194/tc-13-1513-2019, https://doi.org/10.5194/tc-13-1513-2019, 2019
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Episodic changes of permafrost coastlines are poorly understood in the Arctic. By using drones, satellite images, and historic photos we surveyed a permafrost coastline on Qikiqtaruk – Herschel Island. We observed short-term coastline retreat of 14.5 m per year (2016–2017), exceeding long-term average rates of 2.2 m per year (1952–2017). Our study highlights the value of these tools to assess understudied episodic changes of eroding permafrost coastlines in the context of a warming Arctic.
Charles J. Abolt, Michael H. Young, Adam L. Atchley, and Cathy J. Wilson
The Cryosphere, 13, 237–245, https://doi.org/10.5194/tc-13-237-2019, https://doi.org/10.5194/tc-13-237-2019, 2019
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We present a workflow that uses a machine-learning algorithm known as a convolutional neural network (CNN) to rapidly delineate ice wedge polygons in high-resolution topographic datasets. Our workflow permits thorough assessments of polygonal microtopography at the kilometer scale or greater, which can improve understanding of landscape hydrology and carbon budgets. We demonstrate that a single CNN can be trained to delineate polygons with high accuracy in diverse tundra settings.
Yonghong Yi, John S. Kimball, Richard H. Chen, Mahta Moghaddam, and Charles E. Miller
The Cryosphere, 13, 197–218, https://doi.org/10.5194/tc-13-197-2019, https://doi.org/10.5194/tc-13-197-2019, 2019
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To better understand active-layer freezing process and its climate sensitivity, we developed a new 1 km snow data set for permafrost modeling and used the model simulations with multiple new in situ and P-band radar data sets to characterize the soil freeze onset and duration of zero curtain in Arctic Alaska. Results show that zero curtains of upper soils are primarily affected by early snow cover accumulation, while zero curtains of deeper soils are more closely related to maximum thaw depth.
Claire Bernard-Grand'Maison and Wayne Pollard
The Cryosphere, 12, 3589–3604, https://doi.org/10.5194/tc-12-3589-2018, https://doi.org/10.5194/tc-12-3589-2018, 2018
Short summary
Short summary
This study provides a first approximation of the volume of ice in ice wedges, a ground-ice feature in permafrost for a High Arctic polar desert region. We demonstrate that Geographical Information System analyses can be used on satellite images to estimate ice wedge volume. We estimate that 3.81 % of the top 5.9 m of permafrost could be ice-wedge ice on the Fosheim Peninsula. In response to climate change, melting ice wedges will result in widespread terrain disturbance in this region.
Cited articles
Bennett, G. G.: The Calculation of Astronomical Refraction in Marine
Navigation, J. Navigation, 35, 255–259, https://doi.org/10.1017/S0373463300022037, 1982.
Biskaborn, B. K., Smith, S. L., and Noetzli, J.: Permafrost is warming at a
global scale, Nat. Commun., 10, 1–11, https://doi.org/10.1038/s41467-018-08240-4,
2019.
Brown, J., Ferrians Jr., O., Heginbottom, J., and Melnikov, E. (Eds.):
Circum-Arctic map of permafrost and ground-ice conditions, Circum-Pacific
Map Series CP-45, US Geological Survey, Reston, VA, USA, 1997.
Brown, J., Hinkel, K. M. and Nelson, F. E.: The circumpolar active layer
monitoring (CALM) program: Research designs and initial results, Polar
Geogr., 24, 166–258, https://doi.org/10.1080/10889370009377698, 2000.
Chen, J., Liu, L., Zhang, T., Cao, B., and Lin, H.: Using Persistent
Scatterer Interferometry to Map and Quantify Permafrost Thaw Subsidence: A
Case Study of Eboling Mountain on the Qinghai-Tibet Plateau, J. Geophys.
Res.-Earth, 123, 1–14, https://doi.org/10.1029/2018JF004618, 2018.
Cruickshank, J. G.: Soils and Terrain Units around Resolute, Cornwallis
Island, Arctic, 24, 195–209, 1971.
Dredge, L. A.: Surficial geology, Repulse Bay-Hurd Channel, districts of Franklin and Keewatin, Northwest Territories, Geological Survey of Canada, A Series Map 1850A, https://doi.org/10.4095/203636, 1994.
Eaton, D. W., Adams, J., Asudeh, I., Atkinson, G. M., Bostock, M. G.,
Cassidy, J. F., Ferguson, I. J., Samson, C., Snyder, D. B., Tiampo, K. F.,
and Unsworth, M. J.: Investigating Canada's Lithosphere and earthquake
hazards with portable arrays, Eos T. Am. Geophys. Un., 86,
169–173, https://doi.org/10.1029/2005EO170001, 2005.
Ednie, M. and Smith, S. L.: Permafrost temperature data 2008–2014 from community based monitoring sites in Nunavut, Geological Survey of Canada, Open File 7784, 1.zip file, https://doi.org/10.4095/296705, 2015.
French, H. M.: The Periglacial Environment, Wiley, New York, 2017.
Gruber, S.: Ground subsidence and heave over permafrost: hourly time series reveal interannual, seasonal and shorter-term movement caused by freezing, thawing and water movement, The Cryosphere, 14, 1437–1447, https://doi.org/10.5194/tc-14-1437-2020, 2020.
Hu, Y., Liu, L., Larson, K. M., Schaefer, K. M., Zhang, J. and Yao, Y.: GPS
Interferometric Reflectometry Reveals Cyclic Elevation Changes in Thaw and
Freezing Seasons in a Permafrost Area (Barrow, Alaska), Geophys. Res. Lett.,
45, 5581–5589, https://doi.org/10.1029/2018GL077960, 2018.
Jayachandran, P. T., Langley, R. B., MacDougall, J. W., Mushini, S. C.,
Pokhotelov, D., Hamza, A. M., Mann, I. R., Milling, D. K., Kale, Z. C.,
Chadwick, R., Kelly, T., Danskin, D. W., and Carrano, C. S.: Canadian High
Arctic Ionospheric Network (CHAIN), Radio Sci., 44, 1–10,
https://doi.org/10.1029/2008RS004046, 2009.
Jones, B. M., Grosse, G., Arp, C. D., Miller, E., Liu, L., Hayes, D. J., and
Larsen, C. F.: Recent Arctic tundra fire initiates widespread thermokarst
development, Sci. Rep., 5, 1–13, https://doi.org/10.1038/srep15865, 2015.
Kokelj, S. V. and Jorgenson, M. T.: Advances in Thermokarst Research,
Permafrost Periglac., 24, 108–119, https://doi.org/10.1002/ppp.1779, 2013.
Kokelj, S. V., Tunnicliffe, J., Lacelle, D., Lantz, T. C., Chin, K. S., and
Fraser, R.: Increased precipitation drives mega slump development and
destabilization of ice-rich permafrost terrain, northwestern Canada, Global
Planet. Change, 129, 56–68, doi.org/10.1016/j.gloplacha.2015.02.008, 2015.
Lahaye, F., Collins, P., Héroux, P., Daniels, M., and Popelar, J.: Using
the Canadian Active Control System (CACS) for Real-Time Monitoring of GPS
Receiver External Frequency Standards, in: Proceedings of the 14th
International Technical Meeting of the Satellite Division of The Institute
of Navigation (ION GPS 2001), Salt Lake City, UT, 2220–2228, 2001.
Lantuit, H. and Pollard, W. H.: Fifty years of coastal erosion and
retrogressive thaw slump activity on Herschel Island, southern Beaufort Sea,
Yukon Territory, Canada, Geomorphology, 95, 84–102,
doi.org/10.1016/j.geomorph.2006.07.040, 2008.
Larson, K. M.: GPS interferometric reflectometry: applications to surface
soil moisture, snow depth, and vegetation water content in the western
United States, Wires. Rev. Water, 3, 775–787,
https://doi.org/10.1002/wat2.1167, 2016.
Larson, K. M.: Unanticipated Uses of the Global Positioning System, Annu.
Rev. Earth Pl. Sc., 47, 19–40,
https://doi.org/10.1146/annurev-earth-053018-060203, 2019.
Lewkowicz, A. and Harris, C.: Morphology and geotechnique of active-layer detachment failures in discontinuous and continuous permafrost, northern Canada, Geomorphology, 69, 275–297, https://doi.org/10.1016/j.geomorph, 2005.
Lewkowicz, A. G. and Way, R. G.: Extremes of summer climate trigger
thousands of thermokarst landslides in a High Arctic environment, Nat.
Commun., 10, 1329, https://doi.org/10.1038/s41467-019-09314-7, 2019.
Little, J. D., Sandall, H., Walegur, M. T., and Nelson, F. E.: Application of
differential global positioning systems to monitor frost heave and thaw
settlement in Tundra environments, Permafrost Periglac., 14,
349–357, https://doi.org/10.1002/ppp.466, 2003.
Liu, L. and Larson, K. M.: Decadal changes of surface elevation over permafrost area estimated using reflected GPS signals, The Cryosphere, 12, 477–489, https://doi.org/10.5194/tc-12-477-2018, 2018.
Liu, L., Jafarov, E. E., Schaefer, K. M., Jones, B. M., Zebker, H. A.,
Williams, C. A., Rogan, J., and Zhang, T.: InSAR detects increase in surface
subsidence caused by an Arctic tundra fire, Geophys. Res. Lett., 41,
3906–3913, https://doi.org/10.1002/2014GL060533, 2014.
Liu, L., Schaefer, K. M., Chen, A. C., Gusmeroli, A., Zebker, H. A., and
Zhang, T.: Remote sensing measurements of thermokarst subsidence using
InSAR, J. Geophys. Res.-Earth, 120, 1935–1948,
https://doi.org/10.1002/2015JF003599, 2015.
Liu, L., Zhang, T., and Wahr, J.: InSAR measurements of surface deformation
over permafrost on the North Slope of Alaska, J. Geophys. Res.-Earth,
115, F03023, https://doi.org/10.1029/2009JF001547, 2010.
Mackay, J. R.: Segregated epigenetic ice and slumps in permafrost, Mackenzie
Delta area, NWT, Geogr. Bull., 8, 59–80, 1966.
Mackay, J. R.: Downward water movement into frozen ground, western arctic
coast, Canada, Can. J. Earth Sci., 20, 120–134, https://doi.org/10.1139/e83-012,
1983.
Nelson, F. E., Outcalt, S. I., Brown, J., Shiklomanov, N. I., and Hinkel, K.
M.: Spatial and Temporal Attributes of the Active-Layer Thickness Record,
Barrow, Alaska, USA, in: Proceedings of 7th International Conference on
Permafrost, 797–802, 1998.
Nievinski, F. G.: Forward and inverse modeling of GPS multipath for snow
monitoring, PhD thesis, University of Colorado, Boulder, CO, USA, 2013.
O'Neill, H. B., Wolfe, S. A., and Duchesne, C.: New ground ice maps for Canada using a paleogeographic modelling approach, The Cryosphere, 13, 753–773, https://doi.org/10.5194/tc-13-753-2019, 2019.
Roesler, C. and Larson, K. M.: Software tools for GNSS interferometric
reflectometry (GNSS-IR), GPS Solut., 22, 80,
https://doi.org/10.1007/s10291-018-0744-8, 2018.
Romanovsky, V. E., Smith, S. L., and Christiansen, H. H.: Permafrost thermal
state in the polar northern hemisphere during the international polar year
2007-2009: A synthesis, Permafrost Periglac., 21, 106–116,
https://doi.org/10.1002/ppp.689, 2010.
Shiklomanov, N. I., Streletskiy, D. A., Little, J. D., and Nelson, F. E.:
Isotropic thaw subsidence in undisturbed permafrost landscapes, Geophys.
Res. Lett., 40, 6356–6361, https://doi.org/10.1002/2013GL058295, 2013.
Shur, Y., Hinkel, K. M., and Nelson, F. E.: The transient layer: Implications
for geocryology and climate-change science, Permafrost Periglac.,
16, 5–17, https://doi.org/10.1002/ppp.518, 2005.
Shur, Y. L. and Jorgenson, M. T.: Patterns of permafrost formation and
degradation in relation to climate and ecosystems, Permafrost Periglac., 18, 7–19, https://doi.org/10.1002/ppp.582, 2007.
Sladen, W. E.: Permafrost, Geological Survey of Canada, Open File 6724, 1 sheet, https://doi.org/10.4095/288000, 2011.
Smith, S. L., Burgess, M. M., and Taylor, A. E.: High Arctic permafrost
observatory at Alert, Nunavut – analysis of a 23 year data set, in:
Proceedings of the 8th International Conference on Permafrost, 1073–1078,
2003.
Smith, S. L., Wolfe, S. A., Riseborough, D. W., and Nixon, F. M.:
Active-Layer Characteristics and Summer Climatic Indices, Mackenzie Valley,
Northwest Territories, Canada, Permafrost Periglac., 20, 201–220,
https://doi.org/10.1002/ppp.651, 2009.
Smith, S. L., Romanovsky, V. E., Lewkowicz, A. G., Burn, C. R., Allard, M.,
Clow, G. D., Yoshikawa, K., and Throop, J.: Thermal state of permafrost in
North America: A contribution to the international polar year, Permafrost
Periglac., 21, 117–135, https://doi.org/10.1002/ppp.690, 2010.
Smith, S. L., Riseborough, D. W., Ednie, M.,
and Chartrand, J.: A map and summary database of permafrost temperatures in Nunavut, Canada, Geological Survey of Canada, Open File 7393, doi10.4095/292615, 2013.
Streletskiy, D. A., Shiklomanov, N. I., Little, J. D., Nelson, F. E., Brown,
J., Nyland, K. E., and Klene, A. E.: Thaw Subsidence in Undisturbed Tundra
Landscapes, Barrow, Alaska, 1962–2015, Permafrost Periglac., 28,
566–572, https://doi.org/10.1002/ppp.1918, 2017.
Taylor, A., Brown, R. J. E., Pilon, J., and Judge, A. S.: Permafrost and the
shallow thermal regime at Alert, N.W.T, in: Proceedings of the Fourth
Canadian permafrost conference, 12–22, 1982.
Throop, J., Smith, S. L., and Lewkowicz, A. G.: Observed recent changes in
climate and permafrost temperatures at four sites in northern Canada, 63rd
Can. Geotech. Conf. 6th Can. Permafr. Conf., 1265–1272, 2010.
Trucco, C., Schuur, E. A. G., Natali, S. M., Belshe, E. F., Bracho, R., and
Vogel, J.: Seven-year trends of CO2 exchange in a tundra ecosystem affected
by long-term permafrost thaw, J. Geophys. Res.-Biogeo., 117,
1–12, https://doi.org/10.1029/2011JG001907, 2012.
Williams, S. D. P. and Nievinski, F. G.: Tropospheric delays in ground-based
GNSS multipath reflectometry – Experimental evidence from coastal sites, J.
Geophys. Res.-Sol. Ea., 122, 2310–2327, https://doi.org/10.1002/2016JB013612,
2017.
Zhang, J., Liu, L., and Hu, Y.: Reflector heights measured by GPS-IR at
Alert, Resolute Bay, Repulse Bay, Baker Lake, and Iqaluit in northern
Canada, PANGAEA, https://doi.org/10.1594/PANGAEA.904347, 2019.
Short summary
Ground surface in permafrost areas undergoes uplift and subsides seasonally due to freezing–thawing active layer. Surface elevation change serves as an indicator of frozen-ground dynamics. In this study, we identify 12 GPS stations across the Canadian Arctic, which are useful for measuring elevation changes by using reflected GPS signals. Measurements span from several years to over a decade and at daily intervals and help to reveal frozen ground dynamics at various temporal and spatial scales.
Ground surface in permafrost areas undergoes uplift and subsides seasonally due to...
