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6 September 2019
Convection in Earth’s mantle is the “engine” driving plate tectonics. Hot material rises to the Earth’s surface from the boundary between the planet’s core and mantle, at a depth of about 3000 kilometers. Cold material then flows downward due to oceanic tectonic plates sinking into the mantle at subduction zones on the Earth’s surface.
24 November 2015
This is the latest in a series of dispatches from scientists and education officers aboard the Schmidt Ocean Institute’s R/V Falkor. This November, scientists aboard the research vessel Falkor will aim to shed light on the Mariana Back-arc, which is expected to be teeming with activity and life. Over the course of their 27 day mission at sea they will explore the back-arc spreading center to find new sites of hydrothermal activity and to better understand the physical, chemical, and geological forces that shape biodiversity in these unique ecosystems. Read more posts here, and track the Falkor’s progress here.
24 September 2015
…and keeps surviving them barely scathed. Chile has this year been rocked by its 3rd Great earthquake this century–its 14th if you include the last. Though the earthquake’s magnitude and the resulting Pacific-wide tsunami earned it headlines, it was a very mild earthquake in the global scheme of seismic impacts. This has a bit to do with the nature of offshore, subduction zone earthquakes, and a LOT to do with …
12 March 2014
As we pass the three-year mark since one of the most astoundingly gargantuan earthquakes in human history, we marvel at the unprecedented opportunity it gave us to understand earthquakes, tsunamis, oceanic subduction, litho-hydro-atmospheric coupling, plate tectonics, and the Earth itself. We can also appreciate, with humble reverence, the lessons it continues to teach us about the social dimensions of disaster trauma, risk, and resilience. Japan continues to struggle, now largely …
11 March 2011
Everyone–scientists and public alike–has been inundated with information and media about yesterday’s gargantuan earthquake in the subduction zone off the coast of Japan. Its occurrence at midday in one of the most technologically advanced countries in the world has offered some unprecedented views of the phenomena accompanying Great earthquakes. There is an innumerable multitude of videos of the quake happening, which YouTube has already begun compiling on its CitizenTube channel. …