BREAKING: Scientists from New Zealand and overseas have recorded a slow-motion earthquake below the seafloor off the coast of Gisborne. The finding has important implications for assessing tsunami hazards. By shallowest I mean less than 8 km deep that had great magnitude and by deepest I mean deeper than 200 km but with a strong magnitude and destruction. It was the largest U.S. earthquake ever recorded, and the second largest ever recorded worldwide. A major California fault capable of producing a magnitude 8 earthquake has begun moving for the first time on record since July's Ridgecrest quakes. The powerful earthquake occurred on March 27, 1964 in southern Alaska at 5:36 pm. This unprecedented study contributes crucial information to the understanding of earthquake and tsunami risk for New Zealand and worldwide. World's shallowest slow-motion earthquakes detected offshore of New ... have resulted in a magnitude 6.8 earthquake. Share on Facebook. Another would … ... World’s shallowest slow-motion earthquakes detected offshore of New Zealand.

World’s Shallowest Slow-Motion Earthquakes Detected Off New Zealand’s Coast. Tuesday, September 6th 2011. Melgar points to the 1933 Sanriku earthquake in Japan, which came in at a magnitude 8.5, as a good example of one of these intraslab normal quakes. | Longest. The Longest EarthQuake Ever Recorded. World’s shallowest slow-motion earthquakes detected offshore of New Zealand. Tweet on Twitter ... it would have resulted in a magnitude 6.8 earthquake. May 5, 2016.

I have difficulty finding this exact data although E.Q data is pretty informative otherwise.

May 6, 2016.

If the movement had occurred suddenly, rather than slowly, it would have resulted in a magnitude 6.8 earthquake. The ground shaking lasted for nearly five minutes.

The seafloor sensors recorded up to 5.5 centimeters (about 2 inches) of upward movement of the seafloor during the event. Research published in the May 6 edition of Science indicates that slow-motion earthquakes or “slow-slip events” can rupture the shallow portion of a fault that also moves in large, tsunami-generating earthquakes.