Results 51 to 60 of about 27,505 (199)
Development of physically based liquid water schemes for Greenland firn-densification models [PDF]
The Cryosphere, 2019 As surface melt is increasing on the Greenland Ice Sheet (GrIS), quantifying the retention capacity of the firn layer is critical to linking meltwater production to meltwater runoff. Firn-densification models have so far relied on empirical approaches to
V. Verjans +5 more
doaj +1 more source
Reflections On the Anomalous ANITA Events: The Antarctic Subsurface as a Possible Explanation
, 2019 The ANITA balloon experiment was designed to detect radio signals initiated by neutrinos and cosmic ray air showers. These signals are typically discriminated by the polarization and phase inversions of the radio signal.
Kusenko, Alexander +5 more
core +1 more source
Modeling chemistry in and above snow at Summit, Greenland – Part 1: Model description and results [PDF]
, 2011 Sun-lit snow is increasingly recognized as a chemical reactor that plays an active role in uptake, transformation, and release of atmospheric trace gases.
Dibb, JE +6 more
core +3 more sources
Annals of Glaciology, 2019 We compared elastic moduli in polar firn derived from diving wave refraction seismic velocity analysis, firn-core density measurements and microstructure modelling based on firn-core data.
Rebecca Schlegel +8 more
doaj +1 more source
Experimental research of ice cuttings transport by air while drilling of the snow-firn layer
Лëд и снег, 2023 The snow-firn layer of the glaciers of Antarctica and Greenland contains data on the composition of the atmosphere in the past, volcanic eruptions, forest fires, anthropogenic pollution, and many other unique information.
S. A. Ignatiev +4 more
doaj +1 more source
Seismic attenuation in Antarctic firn
The Cryosphere, 2023 Abstract. We estimate the seismic attenuation of P and S waves in the polar firn and underlying ice by spectral analysis of diving, refracted, and reflected waves from active-source three-component seismic signals obtained in 2010 on the Whillans Ice Stream (WIS), a fast-flowing ice stream in West Antarctica.
S. Picotti +3 more
openaire +4 more sources
Firn data compilation reveals widespread decrease of firn air content in western Greenland [PDF]
The Cryosphere, 2019 Abstract. A porous layer of multi-year snow known as firn covers the Greenland-ice-sheet interior. The firn layer buffers the ice-sheet contribution to sea-level rise by retaining a fraction of summer melt as liquid water and refrozen ice. In this study we quantify the Greenland ice-sheet firn air content (FAC), an indicator of meltwater retention ...
B. Vandecrux +18 more
openaire +6 more sources
Mapping the vertical heterogeneity of Greenland's firn from 2011–2019 using airborne radar and laser altimetry [PDF]
The CryosphereThe firn layer on the Greenland Ice Sheet (GrIS) plays a crucial role in buffering surface meltwater runoff, which is constrained by the available firn pore space and impermeable ice layers that limit deeper meltwater percolation.
A. Rutishauser +7 more
doaj +1 more source
Frontiers in Earth Science, 2021 We present a thorough evaluation of the water soluble fraction of the trace element composition (Ca, Sr, Mg, Na, K, Li, B, Rb, U, Ni, Co, As, Cs, Cd, Mo, Se, Eu, Ba, V, Ge, Ga, Cr, Cr, P, Ti, Mn, Zr, Ce, Zn, Fe, Gd, Y, Pb, Bi, Yb, Al, Nb, Er, Nd, Dy, Sm,
Andrea Spolaor +15 more
doaj +1 more source
Spatial variability of snow chemistry in western Dronning Maud Land, Antarctica [PDF]
, 1998 During the austral summer of 1993-94 a number of 1-2 m deep snow pits were sampled in connection with firn-coring in western Dronning Maud Land, Antarctica. The traverse went from 800 to about 3000 m a.s.l. upon the high-altitude plateau.
Gundestrup, Niels +7 more
core +4 more sources