GnRH stimulates the pituitary gland to produce follicle stimulating hormone (FSH), the hormone responsible for starting follicle (egg) development and causing the level of estrogen, the primary female hormone, to rise.
The Great Alaska Earthquake lasted for nearly five minutes and registered a magnitude of 9.2, still the largest ever recorded in North America and second only to the 9.5-magnitude quake that struck Chile in 1960.
http://gallery.usgs.gov/videos/755. 1964 Quake: The Great Alaska Earthquake is an eleven minute video highlighting the impacts and effects of America's largest recorded earthquake. It is an expanded version of the four minute video Magnitude 9.2. Both were created as part of USGS activities acknowledging the fifty year anniversary of the quake on March 27, 2014.