Ocean Floor After Japan Earthquake

Ocean floor networks capture low frequency earthquake event.

Ocean floor after japan earthquake.

8 9 megathrust earthquake rips ocean floor near east coast of honshu japan posted on march 11 2011 by the extinction protocol march 11 2011 tokyo japan was struck by a magnitude 8 9 earthquake off its northeastern coast friday triggering a 13 foot 4 meter tsunami that washed away cars and tore away buildings along the coast near. Tsunami struck japan after the strongest earthquake in 140 years occurred in the island nation. That part of the ocean floor where the ocean plate subducts beneath japan was supposed to be simple and uniform sometimes sticking and building up stress that should have released in segments. The magnitude 9 0 earthquake struck at 2 46 pm.

About 10 500 feet to 17 500 feet 3 200 to 5 350 meters below the ocean s surface the researchers saw. But exactly how much the earth moved in the quake has. The earthquake and tsunami. The earthquake ruptured off the coast of japan below the sea floor.

The japan trench fast drilling project jfast was a rapid response scientific expedition that drilled oceanfloor boreholes through the fault zone of the 2011 tohoku earthquake jfast gathered important data about the rupture mechanism and physical properties of the fault that caused the huge earthquake and tsunami which devastated much of northeast japan. Seismic ocean floor can only create tsunamis under certain conditions. Last august stations on a newly deployed permanent ocean floor observation network recorded rarely seen very low frequency signals. The early estimate of magnitude 8 9 was later revised upward the epicentre was located some 80 miles 130 km east of the city of sendai miyagi prefecture and the focus occurred at a depth of 18 6 miles about 30 km below the floor of the western pacific ocean the earthquake was caused by the rupture of a stretch.

The force of the quake ripped open parts of the ocean floor and pushed some sections up the mechanism that created the tsunami. After the quake however the seabed shows evidence of the massive forces released there. Immediately after the earthquake occurred japanese officials issued a tsunami warning. The massive waves were triggered by a 9 0 magnitude earthquake that gave the sea floor a huge shove toward honshu japan s largest island.