Sentences with phrase «ocean bottom pressure»

He has done extensive work on modeling and interpretation of sea level and ocean bottom pressure signals and is currently a member of various NASA satellite mission science teams (Ocean Surface Topography, GRACE, Ocean Surface Salinity) and the GODAE OceanView Science Team.

Previous theoretical and model - based studies of the relationship between ocean bottom pressure (pb) and sea level (ζ) suggest primarily barotropic variability at mid to high latitudes for scales greater than a few hundred kilometers and periods less than a few months.

Peralta - Ferriz, C., J. H. Morison, J. M. Wallace and J. Zhang, (2011), A basin - coherent mode of sub-monthly variability in Arctic Ocean bottom pressure, Geophys.

The Gravity Recovery And Climate Experiment (GRACE) is unique in its ability to measure changes in ocean bottom pressure (OBP) over the entire globe at large scales.

Not exact matches

Bacteria thrive virtually everywhere on Earth — from sub-zero temperatures to over 750 degrees F (in hydrothermal vents at the bottom of the ocean), and in widely varying oxygen, pressure and nutrient conditions.

If the planet is covered by an immense amount of water, the pressure at the bottom of the ocean will increase to such an extent that water occurs in the form of «Ice VII,» which does not exist on Earth.

Can withstand pressures six times greater than those at the bottom of the ocean and endure temperatures ranging from more than 100 °C down to absolute zero.

Deepest point in the ocean is teeming with life At the bottom of the Mariana trench, some 11,000 metres below sea level and at pressures 1100 times those at the surface, bacteria are thriving.

He proposed that the bottom layers of Europa's ice shell would be slightly warmer than the ice on top, due to heating from both the ocean below and the crushing pressure of the miles - thick ice above.

Under pressure The DEEPSEA CHALLENGER's ability to linger at the ocean bottom for an extended period of time means scientists on future dives might be able to study microbes such as actinomycetes in their natural environments.

The bone - crushing pressures and eyebrow - singing temperatures maintain this water in a plasma state, creating a dense, deadly ocean at the bottom of its atmosphere.

Once sand at the bottom of the ocean, these sediments were buried and the pressure turned the sand into limestone.

Methane hydrate forms in cold temperatures and under high pressure — conditions that can be found at the bottom of the ocean.

At the bottom of the Pacific Ocean at a depth of about 4000 meters, the pressure is about 4 x 107 N / m2.

SAL effects produce additional variations in ocean mass ranging from a few mm to more than 1 cm and can be of the same order of magnitude as the variations in dynamic bottom pressure in several ocean regions.

Knowledge of the relationship between bottom pressure pb and sea level ζ is important for understanding ocean circulation and climate.

CO2 is liquid at the temperatures and pressures of the bottom of deep oceans.

For example, reductions in seasonal sea ice cover and higher surface temperatures may open up new habitat in polar regions for some important fish species, such as cod, herring, and pollock.128 However, continued presence of cold bottom - water temperatures on the Alaskan continental shelf could limit northward migration into the northern Bering Sea and Chukchi Sea off northwestern Alaska.129, 130 In addition, warming may cause reductions in the abundance of some species, such as pollock, in their current ranges in the Bering Sea131and reduce the health of juvenile sockeye salmon, potentially resulting in decreased overwinter survival.132 If ocean warming continues, it is unlikely that current fishing pressure on pollock can be sustained.133 Higher temperatures are also likely to increase the frequency of early Chinook salmon migrations, making management of the fishery by multiple user groups more challenging.134

Tide heights near ice shelves can be measured using traditional coastal tide gauges and bottom pressure recorders, while currents can be measured with meters on moorings in the open ocean or deployed through boreholes drilled through ice shelves, which are the floating portions of ice sheets.

The pressure and temperature at the bottom of the oceans is such that carbon dioxide will be in a liquid state.

A smoothed time series of atmospheric CO2 mole fraction (in ppm) at the atmospheric Mauna Loa Observatory (top red line), surface ocean partial pressure of CO2 (pCO2; middle blue line) and surface ocean pH (bottom green line) at Station ALOHA in the subtropical North Pacific north of Hawaii for the period from 1990 — 2011.

to complement the card: the psmsl.org data base has some very interesting measurements of the changes of pressure on the bottom of the ocean with no obvious trend since 1993 (South Drake passage)... where is the +3 mm / year gone?

The seismological studies extend offshore with ocean bottom seismic experiments, and seafloor pressure measurements are used to study tsunamis and oceanographic processes.

Spatially ‐ averaged bottom pressure anomalies near Antarctica (south of 60 ° S) calculated from GRACE data are well correlated with those produced by the ECCO project using least ‐ squares optimization methods to fit an ocean model to most available data.

A tireless defender of the oceans and marine life, Claire Nouvian led a focused, data - driven advocacy campaign against the destructive fishing practice of deep - sea bottom trawling, successfully pressuring French supermarket giant and fleet owner Intermarché to change its fishing practices.

Satellite - detected distribution and magnitude of the salinity and bottom pressure in parts of the polar ocean suggest a shift from a clockwise to a counterclockwise pattern prevalent prior to the 1990s.