Andy Armstrong
University of New Hampshire
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Featured researches published by Andy Armstrong.
Geological Society, London, Memoirs | 2016
Larry A. Mayer; James V. Gardner; Andy Armstrong
Eight dedicated mapping cruises have taken place since 2003 in the mostly ice-covered waters north of Alaska to 83.5° N (Mayer et al. 2010), using the USCG Icebreaker Healy . Due to the generally heavy sea-ice conditions (the sea-ice edge was typically encountered at about 75° N), most surveys involved single multibeam swaths that covered specific targets. During the 2012 record sea-ice minimum, however, the ice margin was at about 80° N which allowed mapping using overlapping multibeam surveys (Mayer & Armstrong 2012). The complete-coverage surveys of 2012 revealed a previously unknown submarine channel (informally named ‘Weather Channel’) that is one of the most northerly submarine channels mapped to date and is probably related to glacial processes. ‘Weather Channel’ is about 160 km long, first appearing at a depth of about 3300 m on a relatively flat basin floor in what is probably a pull-apart basin separating the northern extension of Chukchi Rise from Chukchi Cap (Brumley et al. 2009). It lies in the middle of the basin, approximately 13 km north of the base of Chukchi Cap and 9 km south of the topographic highs of the …
Quaternary Research | 2005
Martin Jakobsson; James V. Gardner; Peter R. Vogt; Larry A. Mayer; Andy Armstrong; Jan Backman; Rick T Brennan; Brian R. Calder; John K. Hall; Barbara J. Kraft
Archive | 2011
James V. Gardner; Andy Armstrong
Archive | 2008
Larry A. Mayer; Kelley Brumley; A Andronikov; Dale N. Chayes; Andy Armstrong; Brian R. Calder; John K. Hall; W C Clyde; W A Bothner; James V. Gardner
Archive | 2007
Andy Armstrong; James V. Gardner; Larry A. Mayer
Archive | 2005
James V. Gardner; Larry A. Mayer; Andy Armstrong
International Hydrographic Review | 2005
Martin Jakobsson; Andy Armstrong; Brian R. Calder; Lloyd C Huff; Larry A. Mayer; Larry G. Ward
Archive | 2002
Larry A. Mayer; Martin Jakobsson; Andy Armstrong
Archive | 2011
Larry A. Mayer; Andy Armstrong
Archive | 2009
Larry A. Mayer; Andy Armstrong; James V. Gardner