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Degradation of internal organic matter is the main control on pteropod shell dissolution after death
10 July, 2019 by Clara Manno, Victoria Peck
The potential for preservation of thecosome pteropods is thought to be largely governed by the chemical stability of their delicate aragonitic shells in seawater. However, sediment trap studies have found…
Summer surface melt thins Petermann Gletscher Ice Shelf by enhancing channelized basal melt
9 July, 2019 by Keith Nicholls
Increasing ocean and air temperatures have contributed to the removal of floating ice shelves from several Greenland outlet glaciers; however, the specific contribution of these external forcings remains poorly understood.…
Holocene break-up and reestablishment of the Petermann Ice Tongue, Northwest Greenland
9 July, 2019 by Kelly Hogan, Keith Nicholls
Over the last decade, two major calving events of the Petermann Ice Tongue in Northwest Greenland have led to speculation on its future stability and contribution to further Greenland Ice…On the identity of Navicula gottlandica (Bacillariophyta), with the description of two new species Navicula eileencoxiana and Navicula bergstromiana from the Australo-Pacific region
9 July, 2019 by Dominic Hodgson
During the past two decades, the subantarctic diatom flora has been the subject of several detailed taxonomic revisions, resulting in the description of a large number of new species. During…The Source Regions of Whistlers.
4 July, 2019 by Mark Clilverd
We present a new method for identifying the source regions of lightning‐generated whistlers observed at a fixed location. In addition to the spatial distribution of causative lightning discharges, we calculate…Quantifying supraglacial debris thickness at local to regional scales
3 July, 2019 by Michael McCarthy, Michael McCarthy
Supraglacial debris thickness is a key control on the surface energy balance of debris-covered glaciers, which are common in temperate mountain ranges around the world. As such, it is an…
Morphological and geological features of Drake Passage, Antarctica, from a new digital bathymetric model
3 July, 2019 by Alexander Tate, Elanor Gowland, Philip Leat, Robert Larter, Teal Riley
The Drake Passage is an oceanic gateway of about 850 km width located between South America and the Antarctic Peninsula that connects the southeastern Pacific Ocean with the southwestern Atlantic Ocean.…Scaling of size, shape and surface roughness in Antarctic krill swarms
2 July, 2019 by Geraint Tarling
Antarctic krill are obligate swarmers and the size and shape of the swarms they form can have a major influence on trophic interactions and biogeochemical fluxes. Parameterizing variability in size…
Sea salt aerosol production via sublimating wind-blown saline snow particles over sea ice: parameterizations and relevant microphysical mechanisms
2 July, 2019 by Anna Jones, Markus Frey, Xin Yang
Blowing snow over sea ice has been proposed as a significant source of sea salt aerosol (SSA) (Yang et al., 2008). In this study, using snow salinity data and blowing…