Expedition probes ocean trench's deepest secrets - AAAS
2017年1月11日 · The initiative focuses on the trench's deepest spot, a slot-shaped valley called the Challenger Deep. Battling rough seas, scientists aboard the Chinese research vessel Shiyan 3 last month deployed 33 broadband seismometers around the trench, at depths of up to 8137 meters (see map, below).
Oceanic trench - Wikipedia
Oceanic trenches are prominent, long, narrow topographic depressions of the ocean floor. They are typically 50 to 100 kilometers (30 to 60 mi) wide and 3 to 4 km (1.9 to 2.5 mi) below the level of the surrounding oceanic floor, but can be thousands of kilometers in length.
2016 Deepwater Exploration of the Marianas - NOAA Ocean Exploration
The 2016 Deepwater Exploration of the Marianas expedition was a 59-day, three leg telepresence-enabled expedition including remotely operated vehicle, CTD rosette, and mapping operations to explore unknown and poorly known areas in and around the Marianas Trench Marine National Monument and the Commonwealth of the Northern Mariana Islands.
Why Nasa is exploring the deepest oceans on Earth - BBC
Consisting of deep trenches and troughs, it extends 11km (6.8 miles) below the surface of the world's oceans. Cumulatively they account for an area of seabed equivalent to the size of Australia....
Mariana Trench | Depth, Location, Facts, Maps, & Pictures
Mariana Trench, deep-sea trench in the floor of the western North Pacific Ocean, the deepest such trench known on Earth, located mostly east as well as south of the Mariana Islands. It is part of the western Pacific system of oceanic trenches coinciding with subduction zones —points where two adjacent tectonic plates collide, one being forced ...
2016 Deepwater Exploration of the Marianas: Background: …
2016年7月10日 · The three-leg 2016 Deepwater Exploration of the Marianas expedition will help us identify and better understand new geological phenomena and habitats – such as extreme life living in the deepest oceanic trench on the planet, enormous mud volcanoes, active hydrothermal vents, chemosynthetic communities, and possibly deep-sea coral and sponge ...
Ocean Trenches - Woods Hole Oceanographic Institution
2019年11月7日 · What are ocean trenches? Ocean trenches are steep depressions in the deepest parts of the ocean [where old ocean crust from one tectonic plate is pushed beneath another plate, raising mountains, causing earthquakes, and …
‘Five Deeps' mission to explore mysterious ocean trenches
2018年12月19日 · The expedition will yield high-resolution maps that could offer clues about how ocean trenches form when tectonic plates plunge into the mantle. The dives are also sure to spot new species, which will give researchers a chance to compare the ecosystems that have evolved in these isolated, exotic habitats.
Uncovering the Secrets of Oceanic Trenches - Science Recent
2024年1月8日 · Oceanic trenches are monumental features formed by the movement and interaction of tectonic plates. When one plate converges with another, the denser plate is forced downwards into the Earth’s mantle, creating a subduction zone. This process leads to the formation of deep, narrow trenches, often extending for thousands of miles.
'Five Deeps' mission to explore mysterious ocean trenches
2018年12月21日 · The expedition will yield high-resolution maps that could offer clues about how ocean trenches form when tectonic plates plunge into the mantle. The dives are also sure to spot new species, which will give researchers a chance to compare the ecosystems that have evolved in these isolated, exotic habitats.