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Case Study 8




               Alaska’s Volcanoes




               The Aleutian Arc and Wilderness









               Malcolm Cooper                              volcanoes  in  Alaska  make  up  well  over  three-
                                                           quarters of US volcanoes that have erupted in the
               Location                                    last 200 years. The most frequently encountered
               The  most  northerly  state  of  the  USA, Alaska  is   volcano types are stratovolcanoes and calderas, and
               home to two groups of volcanoes – some 44 along   the  dominant  activity  is  explosive  (strombolian,
               the Aleutian Arc, and another 50+ on the mainland   vulcanian, plinian) (Miller et al, 1998; Rosi et al,
               (Wood and Kienle, 1990, pp9–15; Figure CS8.1).   2003).
               These  volcanoes  are  catalogued  on  the  Alaska   In  terms  of  their  attraction  as  tourist
               Volcano  Observatory  website  www.avo.alaska.  destinations it must be understood that access is
               edu/volcanoes/ and in Wood and Kienle (1990).   generally difficult and visitation therefore requires
               Many of these volcanoes have been active within   specific  expeditions  to  be  formed  (Wood  and
               the last 10,000 years (and might be expected to   Kienle,  1990,  p10),  especially  to  the  islands.
               erupt again), and around 44 on the Aleutian Arc   Permission to visit must be obtained from National
               have  been  active  within  historical  time  (since   Wildlife Refuge authorities or local communities
               about  1741; Wood  and  Kienle,  1990,  p10). The   where they exist, but may also be restricted.























               Figure CS8.1  The Aleutian Chain map and volcano list
               Source: Alaska Volcano Observatory, 2009







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