Registration as a professional geologist or professional geophysicist by a provincial or territorial association of professional engineers or geologists and geophysicists is often required for employment and to practice in newfoundland and labrador , alberta , british columbia , nunavut and the northwest territories .
The strain could only be released in earthquakes , and it builds up so quickly that the size and frequency of earthquakes seen in the recent past would not have been enough to release it , says thomas heaton , a geophysicist at the california institute of technology .
Regine hock , a glacial geophysicist at the university of alaska fairbanks , told the national geographic that the breakup of ice shelves is " a normal process that happens all the time " .
U. s. geological survey geophysicist ken hudnut said residents along the coast should heed any calls for evacuation .
美国地质调查局的地球物理学家肯哈得纳特说沿岸居民应该听从疏散任何电话。
On the other hand , geophysicist dave stegman of the scripps institution of oceanography in san diego , california , calls the results of the paper " exciting and profound . "