The new MPAs represent seamounts, submarine canyons
, volcanic pinnacles, and a variety of ecosystem types on the shelf, continental margin, and abyss in both the Indian and Atlantic oceans.
Internal waves are amplified near sharp topographic breaks, such as submarine canyons
crests, where many persistent egg deposition sites are located immediately up-shelf, thus, enhancing physicochemical variability.
In his presentation before defense and security experts, Carpio said based on French studies, China's strong interest and occupation of Panatag Shoal is due to the deep submarine canyons
in the area that are ideal for secret submarine passages.
For example, transport (Vikebo et al., 2005; Christensen et al., 2007), stability of the water column (Coyle et al., 2008), mesoscale eddies (Allen et al., 2001; Logerwell & Smith, 2001; Leon-Chavez at al., 2010), coastal upwelling (Mann & Lazier, 1991), internal waves (Pineda, 1999), tidal currents (Le Fevre, 1986) and the interaction between waves and bathymetric features (e.g., submarine canyons
) (Kunze et al., 2002).
Technicians aboard the ship are exploring the deep underwater habitats of the Gulf of Mexico using Remotely-Operated Vehicles (ROVs) and camera, the videos of which are sent back to the Okeanos Explorer, NOAA, allowing scientists on shore to explore methane seeps, mud volcanoes, submarine canyons
, shipwrecks, brine pools including deep-sea coral habitats.
On the seaward side, the shelf ends abruptly in steep and gullied slopes that lead down to deeply incised submarine canyons
. In its southern part the shelf passes more gradually into a gentle slope.
All other species were seen > 0.5 km of shore, often feeding near escarpments and submarine canyons
. Endangered species, such as blue whales (Balaenoptera musculus) and humpback whales (Megaptera novaeangliae), were also recorded in the study area.
They are examining coral reefs and submarine canyons
to detect earthquake fault zones.
The sediments washed down by the river form unstable submarine canyons
Sources of nutrients range from terrestrial outflow, to coastal upwelling, to cold seeps and hydrothermal vents; transport of resultant primary productivity includes free fall, surface, mid-water and bottom currents (including currents in submarine canyons
and ridge valleys), and tidal pumping.
During the operations of Shalimar, the discovery of a complex intricate network of submarine canyons
off the coast of Central Lebanon and the active deformation of the seabed that this complexity suggests, are revealing signs of the seismic risks associated with this peculiar geological situation of Lebanon.
To the north, a loamy beach faces the emerald-blue coastal waters of the Cuban seashelf, with coral reefs, underwater marine terraces and the submarine canyons
of the Mani-Mani and the Morrillo rivers.