MacGregor J.A., D.P. Winebrenner, H. Conway, K. Matsuoka, P.A. Mayewski, and G.D. Clow, J. Geophys. Res., 112, F03008 [Link to full paper]

We look ice-sheet bed throgh thick ice using radar. When radio waves travel through the ice, radio waves are affected by ice temperature, chemistry, density, and alignments of ice crystals.

Ice core community has been benefited by radar scientists who have imaged the interior of the ice and help locate 10-cm-diameter ice cores in the vast Antarctic and Greenland ice sheets.  However, we, radar scientists, were not really benefited by the ice core research.  This paper shows the way how, in return, radar scientists can be benefited by the ice core community. Read the rest of this entry »

Matsuoka, K., T. Throsteinsson, H. Bjornsson, E.D. Waddington, J. Glaciol., 53 (182), 473-478, 2007 [Link to the full paper]

A distinct layer was observed in the ice, which is likely ash layer. Why did we mostly miss it along the T5 profile?

We have carried out a low-frequency radar survey in the northern slope of Myrdalsjokull, a small ice cap in south Iceland.  As people remember the air traffic disaster in 2010, Iceland has numerous volcano, which sent ash (not cash) on glaciers.  As you can see in the radar image, such ash remains in the ice body, though glacier melt water washed out most of chemicals from the volcanic eruption. Read the rest of this entry »