Hydrographic structure of overflow water passing through the Denmark Strait
Mastropole, Dana M.
MetadataShow full item record
Denmark Strait Overflow Water (DSOW) constitutes the densest portion of North Atlantic Deep Water, which feeds the lower limb of the Atlantic Meridional Overturning Circulation (AMOC). As such, it is critical to understand how DSOW is transferred from the upstream basins in the Nordic Seas, across the Greenland-Scotland Ridge, and to the North Atlantic Ocean. The goal of this study is to characterize the hydrographic structure of the different DSOW constituents at the sill before the water descends into the Irminger Sea using temperature and salinity (T/S) data from 111 shipboard crossings in the vicinity of the sill, collected between 1990 and 2012. The individual realizations indicate that weakly stratified "boluses" of DSOW frequent the sill and contribute the densest water to the overflow. This study also characterizes the structure, size, and location of the boluses and relates them to the T/S modes found at the sill. Lastly, historical hydrographic data from the Nordic Seas are used to make inferences regarding the origin of the boluses.
Submitted in partial fulfillment of the requirements for the degree of Master of Science at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution September 2015
Suggested CitationThesis: Mastropole, Dana M., "Hydrographic structure of overflow water passing through the Denmark Strait", 2015-09, DOI:10.1575/1912/7654, https://hdl.handle.net/1912/7654
Showing items related by title, author, creator and subject.
Brett, Genevieve (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2018-06)This work investigates how a Lagrangian perspective applies to models of two oceanographic flows: an overturning submesoscale eddy and the Western Alboran Gyre. In the first case, I focus on the importance of diffusion ...
Shyu, Esther (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2015-09)Males and females may differ in stage-specific survival, maturation, fertility, or mating availability. These demographic differences, in turn, affect population growth rates, equilibrium structure, and evolutionary ...
Rawson, Charles E. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1998-06)Recent international and domestic regulatory actions have resulted in significant changes to oil tanker designs and intensified attention on predicting tanker environmental performance following groundings or collisions. ...