A transitional climate and the presence of Thule sites make the Melville Peninsula an area of high importance for paleoenvironmental studies. Lake sediment cores and surface samples from Melville Peninsula were analyzed for diatom assemblages. Fragilarioid diatom species dominate assemblages from the interior of the peninsula since the middle Holocene. The greatest changes in diatom communities occurred during the transition from the Holocene Thermal Maximum to the Neoglacial, and in the post-Little Ice Age period. Species richness reached maximum values in the most recent period, reaching 50.8 species in surface sediments. Diatom-inferred pH reconstruction from two lakes did not indicate substantial change throughout the Holocene despite assemblage changes, showing the complexity of interpreting paleoclimate records dominated by Fragilarioids. Analysis of modern assemblages from the interior and East coast of Melville Peninsula confirm the importance of site size and water chemistry, as determined by bedrock geology, in determining diatom species distributions.

A transitional climate and the presence of Thule sites make the Melville Peninsula an area of high importance for paleoenvironmental studies. Lake sediment cores and surface samples from Melville Peninsula were analyzed for diatom assemblages. Fragilarioid diatom species dominate assemblages from the interior of the peninsula since the middle Holocene. The greatest changes in diatom communities occurred during the transition from the Holocene Thermal Maximum to the Neoglacial, and in the post-Little Ice Age period. Species richness reached maximum values in the most recent period, reaching 50.8 species in surface sediments. Diatom-inferred pH reconstruction from two lakes did not indicate substantial change throughout the Holocene despite assemblage changes, showing the complexity of interpreting paleoclimate records dominated by Fragilarioids. Analysis of modern assemblages from the interior and East coast of Melville Peninsula confirm the importance of site size and water chemistry, as determined by bedrock geology, in determining diatom species distributions.

The thesis describes the properties of surface wind and air temperature time series recorded at three locations on the pack ice of the Beaufort Sea. Time series consisting of sequential one-half hourly means were constructed for a period of approximately a year. A diurnal fluctuation in air temperature is found for the late summer, early fall and spring seasons only. Wind speed does not show a significant diurnal fluctuation for any season. There is very little seasonal variability in the wind speed while significant variation is present in the air temperature. The integrated wind speed spectrum (i. e. variance) is 80% less than the integrated sum of the wind component spectra indicating that for periods longer than a day, directional fluctuations contribute much more to the variance of the wind record than do speed fluctuations. Although the measurements only approach the microscale region, there seems to be no consistent indication of a microscale peak in the variance preserving representation of the wind speed spectrum. Time series of daily mean horizontal divergence and vertical component of vorticity for both the wind field and ice motion are examined. For a period of 355 days there is significant negative correlation (-0.65) between the wind divergence and wind vorticity series and significant positive correlation (0.65) between the wind vorticity and ice vorticity series. / Graduation date: 1979

Thesis (M.S. in Meteorology and Physical Oceanography)--Naval Postgraduate School, 2004. / Thesis Advisor(s): Peter Guest. Includes bibliographical references (p. 63-64). Also available online.

Thesis--Copenhagen. / "Reprinted from Rit Fiskideildar, vol. III, 1962." Summaries in Danish and Icelandic. Bibliography: p. [215]-225.

Thesis (M.S. in Meteorology and M.S. in Physical Oceanorgraphy)--Naval Postgraduate School, March 2010. / Thesis Advisor(s): Maslowski, Wieslaw ; Stone, Rebecca E. "March 2010." Description based on title screen as viewed on April 26, 2010. Author(s) subject terms: Arctic Sea Ice, Sea Ice Extent, Sea Ice Thickness, Sea Ice Volume, Coupled Ice-Ocean Model, Partial Correlation Coefficient, Surface Air Temperature, Arctic Oscillation, Atmospheric Forcing, Oceanic Forcing. Includes bibliographical references (p.163-168). Also available in print.

Thesis (M.S. in Engineering Acoustics)--Naval Postgraduate School, March 2010. / Thesis Advisor(s): Stanton, Tim ; Kapolka, Daphne. "March 2010." Description based on title screen as viewed on April 28, 2010. Author(s) subject terms: Acoustic propagation, transmission loss, Arctic Ocean, temperature salinity pH variability. Includes bibliographical references (p. 83-88). Also available in print.

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