Seabed - Wikipedia
The seabed (also known as the seafloor, sea floor, ocean floor, and ocean bottom) is the bottom of the ocean. All floors of the ocean are known as 'seabeds'. The structure of the seabed of the global ocean is governed by plate tectonics. Most of the ocean is very deep, where the seabed is known as the abyssal plain.
Seafloor Mapping - NOAA Ocean Exploration
2022年7月20日 · The deepest point in the ocean drops an incredible 11,000 meters (6.8 miles) beneath the sea surface—that is deeper than Mount Everest is tall! These remarkable features, and others still awaiting discovery, play a critical role in life on Earth.
Ocean floor features - National Oceanic and Atmospheric Administration
2020年5月1日 · First you will need to get into a deep ocean submersible and dive almost 4 miles under the surface of the Pacific Ocean to the sea floor. Graphic depicting satellite captured, bathymetric data of the western Atlantic Ocean Basin and its ocean floor features.
Mapping the Seafloor | U.S. Geological Survey - USGS.gov
2022年4月27日 · The seafloor has distinct features and characteristics that help us better understand Earth’s current and past conditions, potential resources, and natural hazards. However, less than 10% of the seafloor has been mapped globally.
Introduction to the Ocean Floor | manoa.hawaii.edu…
The ocean floor covers more than 70 percent of the planet’s surface. Like dry land, the ocean floor has various features including flat plains, sharp mountains, and rugged canyons (Fig. 7.1). However, the lowest point in the world ocean is much deeper than the highest point on land.
The Seabed: An In-Depth Look At The Ocean Floor
The seabed, otherwise known as the ocean floor, seafloor, ocean floor, or ocean bottom, describes the bottom of the ocean. Regardless of the depth, consistency, and geography, all floors of the ocean are known as the seabed.
Seafloor spreading | Evidence & Process | Britannica
Seafloor spreading, theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them. This idea played a pivotal role in the development of the theory of plate tectonics, which revolutionized geologic thought during the …
ocean floor - Encyclopedia Britannica
The ocean floor has the same general character as the land areas of the world: mountains, plains, channels, canyons, exposed rocks, and sediment-covered areas. The lack of weathering and erosion in most areas, however, allows geological processes to …
8.3: The Seafloor - Geosciences LibreTexts
The ocean floor is sometimes called the final frontier of the modern era. Though people have traveled on the ocean for millennia, people have explored only a tiny fraction of the ocean floor. We know very little about the vast expanse of our oceans.
Plate tectonics - Seafloor Spreading, Continental Drift, …
2024年10月1日 · Seafloor-spreading rates are much more rapid in the Pacific Ocean than in the Atlantic and Indian oceans. At spreading rates of about 15 cm (6 inches) per year, the entire crust beneath the Pacific Ocean (about 15,000 km [9,300 miles] wide) could be …