Rorik Peterson

TL;DR: The volumetric expansion of freezing pore water is widely assumed to be a major cause of rock fracture in cold humid regions, but data from experiments simulating natural freezing regimes indicate that bedrock fracture results instead from ice segregation, supporting a conceptual model in which ice segregation in near-surface permafrost leads progressively to rock fracture and heave.

TL;DR: In this paper, the authors examined the thermal effects of vegetation and snow on the heat and water fluxes within patterned ground systems in all five Arctic bioclimate subzones along an 1800 km trans-Arctic temperature gradient in northern Alaska and northwestern Canada.

TL;DR: In this paper, an aggrading permafrost table is evident in most of the frost-boil soil profiles, indicating that, over time, accumulation of plant biomass leads to reduced thaw-layer thickness.

TL;DR: In this paper, the authors corroborate the predictions of a mathematical model that relates observable patterned ground features to ecosystem parameters with observations at the field sites along the North American Arctic Transect (NAAT) established by the Biocomplexity of Patterned-ground Ecosystems Project.

TL;DR: Satellite data were the primary source of information for the eruption of Mt. Cleveland, Alaska on 19 February, and 11 and 19 March 2001 as mentioned in this paper, resulting in a volcanic cloud that formed an arc over 1000 km long, moved to the NE across Alaska and was tracked using satellite data over more than a 50-h period.