Discovery of pacific fracture zones (27 дек 1925 г. – 28 фев 1939 г.)
Описание:
Systematic tracklines were conducted across the gulf of Alaska by the coast and geodetic survey. Many new canyons on the east coast were discovered. This event is significant becuase it gave the united states more insight on what was actually out there.Добавлено на ленту времени:
Дата:
27 дек 1925 г.
28 фев 1939 г.
~ 13 years
