Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Joel T. Harper"'
Publikováno v:
Journal of Glaciology, Vol 67, Pp 952-960 (2021)
Processes governing meltwater penetration into cold firn remain poorly constrained. Here, in situ experiments are used to develop a grain-scale model to investigate physical limitations on meltwater infiltration in firn. At two sites in Greenland, dr
Externí odkaz:
https://doaj.org/article/b5f1f34e2c6645f79b833eaecf17ceb7
Publikováno v:
Journal of Glaciology, Vol 64, Pp 171-174 (2018)
Externí odkaz:
https://doaj.org/article/2ce1d1ef3c224904bbd7bbbe40c4d7a5
Publikováno v:
Annals of Glaciology, Vol 57, Pp 62-70 (2016)
A suite of surface and basal measurements during and after borehole drilling is used to perform in situ investigation of the local basal drainage system and pressure forcing in western Greenland. Drill and borehole water temperature were monitored du
Externí odkaz:
https://doaj.org/article/825e5d27b7bf4743825880d7aee9fcf0
Autor:
Cedric J. Hagen, Joel T. Harper
Publikováno v:
Annals of Glaciology, Pp 1-9
As warming intensifies across the Greenland ice sheet, an increasing number of shallow coring and radar studies are targeting the melt-impacted firn column to investigate meltwater processes. Highly inhomogeneous infiltration and refreezing, however,
Externí odkaz:
https://doaj.org/article/b50b5c3addc640e6a0a696eb0c820169
Autor:
Jens-Ove Näslund, Dirk van As, Timo Ruskeeniemi, Joel T. Harper, Anne Kontula, Jun Saito, Jan-Olof Selroos, Neil F. Humphrey, Lillemor Claesson Liljedahl, Toby Meierbachtol, Sven Follin
Publikováno v:
Nature Geoscience. 14:751-755
Greenland Ice Sheet mass loss is impacting connected terrestrial and marine hydrologic systems with global consequences. Groundwater is a key component of water cycling in the Arctic, underlying the 1.7e6 km2 ice sheet and forming offshore freshwater
Publikováno v:
Journal of Glaciology. 68:187-196
Surface speeds in Greenland's ablation zone undergo substantial variability on an annual basis which are presumed to mainly be driven by changes in sliding. Yet, meltwater-forced changes in ice–bed coupling can also produce variable deformation mot
Publikováno v:
The Cryosphere, Vol 15, Pp 897-907 (2021)
Temperature sensors installed in a grid of nine full-depth boreholes drilled in the southwestern ablation zone of the Greenland Ice Sheet recorded cooling in discrete sections of ice over time within the lowest third of the ice column in most borehol
Publikováno v:
Annals of Glaciology. 62:175-178
The intermixed thermal and structural framework of cold firn, water-saturated firn and ice layers in Greenland's percolation zone can be challenging to penetrate with core drills. Here, we present our experiences using a hot water drill for research
Publikováno v:
International Journal of Managerial Finance. 17:97-117
PurposeThis paper aims to examine the effect employee performance has on subsequent corporate cash holdings.Design/methodology/approachThe authors utilize panel data estimation, including an instrumental variable approach, to identify the relation be
Publikováno v:
The Cryosphere, Vol 14, Pp 1703-1712 (2020)
One-dimensional simulations of firn evolution neglect horizontal advection from ice flow, which transports the firn column across climate gradients as it is buried by accumulation. Using a suite of model runs, we demonstrate the impacts of horizontal