Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 405 for “"Equatorial"”.
-
An Investigation of Equatorial 150-Km Irregularities
*The dissertation includes a CD that requires the following applications: Adobe Acrobat, WinZip.
-
Dynamics of the equatorial undercurrent and its termination
… and seasonal variations of the Atlantic equatorial undercurrent (EUC). The main and most original contribution of the dissertation is a detailed analysis of the Atlantic EUC simulated by Philander and Pacanowski's (1986) general circulation model (GCM), which provides a novel description …
-
Clay mineralogy of the southwest equatorial Atlantic sediments
… of the clay/fine silt size fractions of the equatorial Atlantic bottom sediments. From these data, it was hoped to find the controlling factors for the size distribution and mineralogy of the bottom sediments. That is, whether the mineralogy of these sediments reflects the grain-size …
-
Pliocene-Pleistocene Radiolarian Investigations of the Equatorial Oceans
… Olduvai magnetosubchron (1.95-1.79Ma) of the equatorial Indo-Pacific Oceans. A number of radiolarian tools are used as palaeoceanographic proxies, including the recognition of distinct glacial and interglacial assemblages, which form the basis of a new Radiolarian Temperature Index (RTI), and …
-
EASTERN EQUATORIAL PACIFIC PRODUCTIVITY VIA TWO GEOCHEMICAL PROXIES
… in response to a dynamic climate. The eastern equatorial Pacific (EEP) is an ideal site for productivity studies due to its high levels of nutrients and deep upwelling. This research examines the phosphorous and barite geochemisty of four EEP sites while also comparing the sites’ glacial and …
-
Bioavailable Iron in Equatorial Pacific Ocean Aerosol Samples
… real marine aerosol particles collected over the Equatorial Pacific Ocean, as a function of both sunlight and electron donors (EDs) such as dimethyl sulfide and organic acids. Detection limits were as low as 40 pM Fe(II) and 100 pM H<sub>2</sub>O<sub>2</sub>. Fe(II)in aerosol concentration was …
-
Dynamics of the equatorial undercurrent and its determination
… and seasonal variations of the Atlantic equatorial undercurrent (EUC). The main and most original contribution of the dissertation is a detailed analysis of the Atlantic EUC simulated by Philander and Pacanowski's (1986)general circulation model (GCM), which provides a novel description …
-
Heat flow over the equatorial mid-Atlantic ridge.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1969.
-
Interpretation of equatorial current meter data as internal waves
… over earlier work: extensive data from an equatorial region, long time series (2 years), and relatively sophisticated linear internal wave models. Since the GM models are based on mid-latitude data, having data from an equatorial region which has a strong mean current system offers an …
-
Radio and Optical Techniques for Locating Equatorial Plasma Irregularities
… almost nightly during certain seasons at equatorial latitudes. These depletions contain density irregularities of scales ranging from a few centimeters to thousands of kilometers. Spread-F, the disruption of ionospheric measurements with ionosondes and incoherent scatter radar, and …
-
Interpretation of equatorial current meter data as internal waves
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric and Planetary Sciences, and Woods Hole Oceanographic Institution, 1987.
-
Near-equatorial deep circulation in the Indian and Pacific oceans
… and observations of deep circulation in the near-equatorial Atlantic, Indian and Pacific Oceans are reviewed. Flow of deep and bottom water in the near-equatorial Indian and Pacific oceans, the two oceans with only a southern source of bottom water, is described through analysis of recent CTD …
-
Equatorial ocean dynamics impacting upwelling west of the Galápagos Archipelago
… lies on the equator, in the path of the Pacific Equatorial Undercurrent (EUC) as it flows eastward across the Pacific at the depth of the thermocline. It is hypothesized that the EUC upwells into the GCP as it reaches the topographical barrier of the Galápagos Archipelago. The path of the EUC in …
-
Dynamics of nonlinear cross-equatorial flow in the deep ocean
… vorticity transformation in nonlinear cross-equatorial flow. The analysis of vorticity fluxes follows from the flux-conservative form of the absolute vorticity equation. It is shown that the zonally integrated meridional flux of vorticity across the equator using no slip boundary conditions …
-
The expulsion of Igbo people from Equatorial Guinea: 1950-1979
… on the expulsion of the Igbo people from Equatorial Guinea between 1950 and 1979. The research begins in 1950 because by the mid1950s, many labourers migrated from Nigeria to Fernando Po Island. Most of these Nigerian migrants were Igbo people. The study ends in 1979, the year that marked …
-
Selenium Distribution and Cycling in the Eastern Equatorial Pacific Ocean
<p>Oxygen minimum zones in oceanic waters have become increasingly important to the marine environment and society. Low oxygen waters affect not only the distribution and abundance of marine organisms, but also impact the solubility and transport of trace elements that are of biological importance, …
-
Diversity of larval tuna diets across the central equatorial Pacific
Understanding the feeding ecology of larval tuna is essential for predicting their recruitment and survival success as this directly supports the management of tuna populations across the changing ocean. To provide new insights into early-stage foraging dynamics, we investigated larval tuna gut …
-
Simultaneous observations of meteors and the equatorial electrojet at Jicamarca
… along meteor trails deposited within the equatorial electrojet. It is suggested that trails at electrojet heights must carry intense transient currents that excite two-stream and/or gradient drift instabilities for irregularity growth. The direction of electron motion responsible for the …
Page 1 of 21