1-20 OF 235
Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article
Published: 19 October 2017
Quarterly Journal of Engineering Geology and Hydrogeology (2017) 50 (4): 369-378.
.../10.1144/qjegh.34.1.7 Hutchinson , J.N. & Thomas-Betts , A. 1990 . Extent of permafrost in southern Britain in relation to geothermal flux . Quarterly Journal of Engineering Geology , 23 , 387 – 390 , https://doi.org/10.1144/GSL.QJEG.1990.023.04.13 Hutchinson , J.N...
FIGURES | View All (14)
Journal Article
Published: 01 June 2017
Clays and Clay Minerals (2017) 65 (3): 168-183.
...Elena Kuznetsova Abstract—Layers of volcanic ash and Andosol soils derived from the ash may play an important role in preserving snow and ice as well as in the development of permafrost conditions in (a) the immediate vicinity of volcanoes at high elevations or at high latitudes and (b) land areas...
FIGURES | View All (6)
Journal Article
Published: 24 March 2017
Quarterly Journal of Engineering Geology and Hydrogeology (2017) 50 (2): 117-125.
FIGURES | View All (11)
Journal Article
Published: 01 August 2016
Environmental and Engineering Geoscience (2016) 22 (3): 259-277.
...Jocelyn M. Simpson; Margaret M. Darrow; Scott L. Huang; Ronald P. Daanen; Trent D. Hubbard ABSTRACTFrozen debris lobes (FDLs) are large masses of soil, rock, incorporated organic material, and ice moving down permafrost-affected slopes. In this paper, we focus on FDL-A in the south-central Brooks...
FIGURES | View All (13)
Journal Article
Published: 23 June 2016
Canadian Journal of Earth Sciences (2016) 53 (10): 1010-1028.
...Robert G. Way; Antoni G. Lewkowicz AbstractPermafrost zonation in Labrador–Ungava ranges from very isolated patches through to continuous permafrost. Here we present a new estimate of the distribution of permafrost at high resolution (250 m × 250 m) using spatial numerical modelling supported...
FIGURES | View All (14)
Journal Article
Published: 01 June 2016
Vadose Zone Journal (2016) 15 (6): vzj2016.01.0010.
...Michelle A. Walvoord; Barret L. Kurylyk AbstractWhere present, permafrost exerts a primary control on water fluxes, flowpaths, and distribution. Climate warming and related drivers of soil thermal change are expected to modify the distribution of permafrost, leading to changing hydrologic...
FIGURES | View All (9)
Journal Article
Journal: Geology
Published: 01 June 2016
Geology (2016) 44 (6): 439-442.
...Melissa L. Chipman; George W. Kling; Craig C. Lundstrom; Feng Sheng Hu AbstractAnthropogenic warming may promote rapid permafrost thaw in the Arctic and alter the global carbon cycle. Although several studies suggest increased thermo-erosion as a result of recent warming, a long-term context...
FIGURES
Journal Article
Published: 06 April 2016
Canadian Journal of Earth Sciences (2016) 53 (5): 494-505.
...-Holocene permafrost altitudinal limits ( Fig. 4 ). Therefore, even if it is impossible to conclude the interannual sustainability of these ice cores, the existence of sufficient winter frost ground penetration for the onset of a ventilation mechanism in some rock glaciers and scree slopes at low elevations...
FIGURES | View All (5)
Journal Article
Journal: Geosphere
Published: 01 April 2016
Geosphere (2016) 12 (2): 632-643.
...Zhanju Lin; Jing Luo; Fujun Niu AbstractThe thermal influence of a thermokarst lake on permafrost in the Beiluhe Basin of the Qinghai-Tibet Plateau was examined over nearly 10 yr (2006–2014), and lake development involved both downward and lateral heat transfers. Downward heat transfer rapidly...
FIGURES | View All (11)
Journal Article
Published: 01 March 2016
Journal of Environmental and Engineering Geophysics (2016) 21 (1): 37-42.
... and associated increased storm intensity and frequency. The upper sediment column of the coastal North Slope of Alaska can be described as continuous permafrost underlying a thin (typically less than 1–2 m) active layer that responds variably to seasonal thaw cycles. Assessing the temporal and spatial...
FIGURES | View All (5)
Journal Article
Journal: Geophysics
Published: 26 February 2016
Geophysics (2016) 81 (2): H9-H19.
... with soil VWCs ranging from 0.46 to 0.63. In 31% of traces, the permafrost table horizon was identifiable, resulting in ALT measurements with uncertainties of generally less than 25%. The average ALT was 48.1 cm, with a standard deviation of 16.1 cm. We found distinct patterns of ALT spatial variability...
FIGURES | View All (8)
Journal Article
Journal: Geophysics
Published: 29 January 2016
Geophysics (2016) 81 (1): WA195-WA202.
... addressed this problem of structural imaging by 3D ground-penetrating radar (GPR), which, in permafrost studies, has been primarily used for 2D profiling. We have used a 3D kinematic GPR surveying strategy at a field site located in the New Siberian Archipelago on top of an ice complex. After applying a 3D...
FIGURES | View All (11)
Journal Article
Journal: Geophysics
Published: 29 January 2016
Geophysics (2016) 81 (1): WA225-WA232.
... are difficult to determine. In arctic environments, shallow subsurface flow paths are limited to a thin zone of seasonal thaw above permafrost, which is traditionally assumed to mimic the surface topography. We have used a combined approach of electrical resistivity tomography (ERT) and self-potential (SP...
FIGURES | View All (6)
Journal Article
Journal: Geophysics
Published: 29 January 2016
Geophysics (2016) 81 (1): WA233-WA245.
...Shan Dou; Seiji Nakagawa; Douglas Dreger; Jonathan Ajo-Franklin ABSTRACTSaline permafrost is sensitive to thermal disturbances and is prone to subsidence, which renders it a major source of geohazard in Arctic coastal environments. Seismic methods could be used to map and monitor saline permafrost...
FIGURES | View All (12)
Journal Article
Journal: Geophysics
Published: 21 January 2016
Geophysics (2016) 81 (1): WA247-WA263.
...Baptiste Dafflon; Susan Hubbard; Craig Ulrich; John Peterson; Yuxin Wu; Haruko Wainwright; Timothy J. Kneafsey ABSTRACTShallow permafrost distribution and characteristics are important for predicting ecosystem feedbacks to a changing climate over decadal to century timescales because they can...
FIGURES | View All (12)
Journal Article
Journal: Geophysics
Published: 21 December 2015
Geophysics (2015) 81 (1): WA1-WA11.
... layer, bedrock, ice-bearing rock glacier material, and degraded permafrost within the rock glacier. The latter could be further distinguished in areas where the ice must have melted only recently, and regions that had degraded some time ago. Additionally, high-resolution cross-hole radar tomography...
FIGURES | View All (13)
Journal Article
Journal: Geophysics
Published: 21 December 2015
Geophysics (2015) 81 (1): WA87-WA99.
...Neil Foley; Slawek Tulaczyk; Esben Auken; Cyril Schamper; Hilary Dugan; Jill Mikucki; Ross Virginia; Peter Doran ABSTRACTThe McMurdo Dry Valleys are a polar desert in coastal Antarctica, where glaciers, permafrost, ice-covered lakes, and ephemeral summer streams coexist. Liquid water is found...
FIGURES | View All (10)
Journal Article
Journal: Geophysics
Published: 17 December 2015
Geophysics (2015) 81 (1): WA71-WA85.
...Thomas A. Douglas; M. Torre Jorgenson; Dana R. N. Brown; Seth W. Campbell; Christopher A. Hiemstra; Stephanie P. Saari; Kevin Bjella; Anna K. Liljedahl ABSTRACTAccurate identification of the relationships between permafrost extent and landscape patterns can help to develop airborne geophysical...
FIGURES | View All (10)
Journal Article
Published: 01 December 2014
Journal of Environmental and Engineering Geophysics (2014) 19 (4): 207-228.
.... 1998 , Ground-penetrating radar reflection profiling of groundwater and bedrock in an area of discontinuous permafrost : Geophysics , 63 , 1573 – 1584 . Arcone S.A. Peapples P...
FIGURES | View All (19)
Journal Article
Journal: Geology
Published: 01 August 2014
Geology (2014) 42 (8): 651-654.
... (∼520 L/s) has also anomalously high temperatures (9.0 °C), despite occurring in a region of low geothermal gradient and thick (>400 m) permafrost. Active erosion at the spring outlet forms gullies with alcove-channel-apron morphology, remarkably similar to archetypal gullies observed on mid-latitude...
FIGURES | View All (4)