Ocean Atmosphere Final Review

Ocean Atmosphere Final Review - OceanAtmosphereReview 19:28

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Ocean Atmosphere Review 19:28 Deep circulation: from about 1 m deep to the bottom of the ocean Know water mass/water type, know differences between each (table 9.3, but no  need to memorize all characteristics) Surface waters - waters that occur between the surface of the ocean and the  permanent thermocline/ pycnocline Central water masses - water masses found at the surface in the central gyres  of the regional oceans Intermediate water masses - water masses that occur between the surface  and deep or bottom water masses Deep waters - water masses that occur near the bottom (below the  intermediate water masses) of the major ocean basins and, during part of the  year, may also extend from the surface to greater depths in polar and  subpolar regions Bottom waters - water masses that occur at the bottom of the major ocean  basins and, at least for part of the year (usually the winter) extend from the  surface to the bottom in specific polar or subpolar regions (i.e. bottom water  formation areas) Mode waters - water masses characterized by weak stratification and a  general sameness in temperature and density Mediterranean outflow water (Mediterranean seawater plus north Atlantic  Central water) has the highest salinity Arctic Surface Water (North Atlantic surface Water and freshwater runoff into  Arctic basin) is the coldest temperature What do we use to define water mass/ water type (temperature/salinity diagrams)  oceanographers prefer to use potential temperature because it more accurately  represents the conditions of formation at the surface and takes into account  adiabatic changes Isopycnals help define different water masses because they are the lines that  connect the combinations of potential temperature and salinity that produce equal  densities; isopycnals= density- 1000 kgm^3
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Know fronts (feature of deep circulation)- regions of rapid transitions and know  characteristics An ocean front is the interface between two water masses  of  different  physical characteristics. Usually, fronts show strong horizontal gradients of  temperature and salinity, with resulting density variation and current shear.  Some fronts which have weak horizontal gradients at the surface have strong  gradients below the surface. In some cases, gradients are weak at all levels,  but variability across the front, as reflected by the shape of the  thermal  profile, is sufficient to complicate sound transmission. A tactical front is any discontinuity in the ocean which significantly alters the 
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/26/2011 for the course GEOGRAPHY 3A taught by Professor Staff during the Spring '11 term at UCSB.

Page1 / 14

Ocean Atmosphere Final Review - OceanAtmosphereReview 19:28

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online