Arnold Henry Guyot (1807–1884) – noted the structure of glaciers and advanced understanding in glacier motion, especially in fast ice flow.
Arnold Hery Guyot (awatay wan 1807 har 1884) - iktab uɣna n aɣiris n glacier tan id afaham hullan n immik wa s išawankat glacier hullan daɣ anji n aman sammednen