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Dissertations / Theses on the topic 'Atmospheric tides'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Oliver, Sophia. "Modelling studies of the atmospheric tides." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365773.

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2

Kovalam, Sujata. "MF radar observations of tides and planetary waves." Title page, contents and abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09PH/09phk878.pdf.

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Copies of previously published articles inserted. Bibliography: p. 185-200. Data obtained from six radar stations covering a wide latitude range has been used to determine the global distribution of planetary waves and tides. In the process a number of data analyses techniques were considered for their characterisation.

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3

Mertz, Gordon James. "Atmospheric and oceanic 40- to 50-day oscillations in the source region of the Somali Current." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25933.

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Current and temperature data were acquired in the source region of the Somali Current, jointly by the Universities of Kiel and Miami, as part of the INDEX pilot studies. The data were acquired over a six-month period (January-July, 1976) which spans the springtime Monsoon reversal. The experiment and the data are described in Düing and Schott (1978). This thesis describes the results of the spectrum analysis of fluctuations found in data from the experiment's two southernmost sensor locations. It is found that, once the annual cycle is removed, most of the variance in these current and temper

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4

Wood, Andrew Richard. "Theoretical studies of atmospheric tides for the interpretation of satellite data." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359582.

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5

Yagai, Isamu. "NUMERICAL SIMULATION OF ATMOSPHERIC THERMAL TIDES WITH A GENERAL CIRCULATION MODEL." Kyoto University, 1991. http://hdl.handle.net/2433/168744.

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本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものである<br>Kyoto University (京都大学)<br>0048<br>新制・論文博士<br>博士(工学)<br>乙第7629号<br>論工博第2514号<br>新制||工||853(附属図書館)<br>UT51-91-T435<br>(主査)教授加藤進, 教授深尾昌一郎, 教授桜井健郎<br>学位規則第4条第2項該当

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6

Sridharan, S. "Investigation of middle atmospheric winds, waves and tides from low latitudes." Thesis, Indian Institute of Geomagnetism, Mumbai, 2002. http://localhost:8080/xmlui/handle/123456789/221.

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7

Sridharan, S. "Investigation of middle atmospheric winds, waves and tides from low latitudes." Thesis, IIG, 2002. http://localhost:8080/xmlui/handle/123456789/1604.

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A Thesis submitted to the Moanonmaniam Sundaranar University, Tirunelveli, in partial fulfilment of the requirements for the Ph.D. degree under the guidance of Dr. S. Gurubaran, Equatorial Geophysical Research Laboratory, Tirunelveli and Dr. N. Arunachalam, M.S. University, Tirunelveli

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8

Stine, Alexander 1973. "A survey of internal tides as seen in moored buoy records." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/29579.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, June 2003.<br>Includes bibliographical references (leaves 139-144).<br>We estimate the vertical structure of tidal frequency energy at various locations in the ocean by decomposing current records from the WHOI moored buoy archive. Estimates are made of the barotropic and baroclinic modes 1-4 for multiple locations, primarily in the North Atlantic and North Pacific. Estimates are also made for energy flux rates at some locations. The implied global dissipation rate fro the internal tides

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9

Baumgaertner, Andreas Josef Gerhard. "Observations of Middle Atmosphere Dynamics over Antarctica." Thesis, University of Canterbury. Physics and Astronomy, 2007. http://hdl.handle.net/10092/1397.

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This thesis is concerned with the dynamics of the middle atmosphere over the southern-most continent on our planet, Antarctica. Building on previous observational and theoretical efforts to understand the dynamics of this region of the atmosphere, the work encompasses instrument improvements as well as data analysis studies of gravity waves in the lower and middle stratosphere, tides in the upper mesosphere and lower thermosphere, and short-period planetary waves in the stratosphere and mesosphere. An upgrade of the Medium-Frequency Spaced Antenna (MFSA) radar at Scott Base, Antarctica

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10

Kim, Sungphil. "Internal Tides and Internal Solitary Waves in the Northern South China Sea." NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-05152009-141246/.

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Large-amplitude internal solitary waves (ISWs) are frequently observed in the northern South China Sea (SCS). In a project sponsored by the US Office of Naval Research, four moorings were deployed between the Luzon Strait and the Chinese continental shelf by Steve Ramp of the Naval Postgraduate School and David Tang of National Taiwan University from late April 2005 to May 2006. Several CTD sections were taken during April and July in 2005. Satellite pictures were also collected during that period. In this study, these data were used to examine the characteristics, generation, and propagation

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11

Phillips, A. "Dynamics of the Antarctic mesosphere and lower thermosphere /." Title page, contents and abstract only, 1989. http://web4.library.adelaide.edu.au/theses/09PH/09php5583.pdf.

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Thesis (Ph. D.)--University of Adelaide, Mawson Institute for Antarctic Research, 1990.<br>Copies of author's previously published articles inserted. Includes bibliographical references (leaves 219-226).

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12

Hupe, Patrick [Verfasser], and Markus [Akademischer Betreuer] Rapp. "Global infrasound observations and their relation to atmospheric tides and mountain waves / Patrick Hupe ; Betreuer: Markus Rapp." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2019. http://d-nb.info/1182228437/34.

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13

Tracy, Brian David. "Lunar Tidal Effects in the Electrodynamics of the Low-Latitude Ionosphere." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/1968.

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We used extensive measurements made by the Jicamarca Unattended Long-Term Investigations of the Ionosphere and Atmosphere (JULIA) and Incoherent Scatter Radar (ISR) systems at Jicamarca, Peru during geomagnetic quiet conditions to determine the climatologies of lunar tidal effects on equatorial vertical plasma drifts. We use, for the first time, the expectation maximization (EM) algorithm to derive the amplitudes and phases of the semimonthly and monthly lunar tidal perturbations. Our results indicate, as expected, lunar tidal effects can significantly modulate the equatorial plasma drifts. T

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14

Moskowitz, Benjamin M. "An analysis of frictional feedback in the Madden-Julian oscillation /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/6791.

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15

Jonsson, Andreas. "Modelling the middle atmosphere and its sensitivity to climate change." Doctoral thesis, Stockholm University, Department of Meteorology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-769.

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<p>The Earth's middle atmosphere at about 10-100 km has shown a substantial sensitivity to human activities. First, the ozone layer has been reduced since the the early 1980s due to man-made emissions of halogenated hydrocarbons. Second, the middle atmosphere has been identified as a region showing clear evidence of climate change due to increased emissions of greenhouse gases. While increased CO<sub>2 </sub>abundances are expected to lead to a warmer climate near the Earth's surface, observations show that the middle atmosphere has been cooling by up to 2-3 degrees per decade over the past fe

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16

Vichare, Geeta. "Theoretical modelling of low latitude current system." Thesis, Indian Institute of Geomagnetism, Mumbai, 2001. http://localhost:8080/xmlui/handle/123456789/210.

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17

Flora, Megan. "Diel, Tidal, and Sex Based Differences in Time Spent Feeding by the Florida Manatee (Trichechus manatus latirostris)." NSUWorks, 2012. http://nsuworks.nova.edu/occ_stuetd/190.

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The feeding behavior of an animal is based on adaptations to the environment and the animal’s body condition. The Florida manatee (Trichechus manatus latirostris) is an example of a marine mammal that may alter its feeding pattern based on diel and tidal cycles. The increased presence of boats during the day could potentially cause manatees to alter their feeding rates, or the time spent feeding per hour, over the diel cycle. Tide levels may cause manatees to be restricted from areas of preferred vegetation. In addition, the differential reproductive investment between males and females may ca

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18

Soto, Ramos Inia Mariel. "Harmful Algal Blooms of the West Florida Shelf and Campeche Bank: Visualization and Quantification using Remote Sensing Methods." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4775.

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Harmful Algal Blooms (HABs) in the Gulf of Mexico (GOM) are natural phenomena that can have negative impacts on marine ecosystems on which human health and the economy of some Gulf States depends. Many of the HABs in the GOM are dominated by the toxic dinoflagellate Karenia brevis. Non-toxic phytoplankton taxa such as Scrippsiella sp. also form intense blooms off the Mexican coast that result in massive fish mortality and economic losses, particularly as they may lead to anoxia. The main objectives of this dissertation were to (1) evaluate and improve the techniques developed for detection of

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19

Engel, Patricia Ann. "Spatial and temporal variability of tide-induced salt flux in a partially mixed estuary." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/54845.

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Thesis (S. M.)--Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), 2009.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student submitted PDF version of thesis.<br>Includes bibliographical references (p. 41-43).<br>Mechanisms for the tidal component of salt flux in the Hudson River estuary are investigated using a 3D num

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20

Borges, Fabricio Batista. "Variações nas marés atmosféricas e nos ventos meteóricos observados em São João Do Cariri-PB e em Cachoeira Paulista-SP." Universidade Estadual da Paraíba, 2010. http://tede.bc.uepb.edu.br/tede/jspui/handle/tede/2170.

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Made available in DSpace on 2015-09-25T12:23:41Z (GMT). No. of bitstreams: 1 Fabricio Batista Borges.pdf: 1546340 bytes, checksum: 1d8be2583a092a34d256d749548325ef (MD5) Previous issue date: 2010-04-04<br>Meteor wind measurements obtained from São João do Cariri B and Cachoeira Paulista SP, Brazil, obtained during the period from August 2004 to July 2006 were used to examine Variations in atmospheric tides and winds in the mesopause region of the equatorial and low Latitudes in the southern hemisphere. The results for the mean wind were compared with the HWM 93 and HWM 07 models (Horizo

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21

Bellisario, Christophe. "Modélisation du rayonnement proche infrarouge émis par la haute atmosphère : étude théorique et observationnelle." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLV027/document.

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Le rayonnement atmosphérique appelé nightglow est un phénomène se produisant à haute altitude (environ 90 km). Il consiste en l’émission d’un rayonnement suite à la désexcitation de certaines molécules et atomes (OH, Na, O2 et O). Il se répartit sur une large gamme spectrale, en particulier dans l’infrarouge et se propage jusqu’au niveau du sol. Le rayonnement nightglow constitue un marqueur important pour la haute atmosphère, permettant de remonter à la température, mais également à de nombreux phénomènes dynamiques comme les marées atmosphériques ou les ondes de gravité. Sa propagation au ni

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22

Muller-Wodarg, Igo Carl Friedrich. "Modelling tides propagating through the menopause into the earth's upper atmosphere." Thesis, University College London (University of London), 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268013.

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23

Withers, Paul G. "Tides in the Martian atmosphere, and other topics." Diss., The University of Arizona, 2003. http://hdl.handle.net/10150/289910.

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The dynamics of the martian upper atmosphere are not well-understood. I have identified the dominant tidal modes present in the upper atmosphere by comparing density measurements from the aerobraking of the Mars Global Surveyor spacecraft to predictions from classical tidal theory. Other observations and general circulation models have also provided constraints. I have presented a justification for why topography has a strong influence on the tides in the upper atmosphere. I have also studied sol-to-sol variations in density at fixed altitude, latitude, longitude, season, and time of day. I ha

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24

Löffelmann, J., Friederike Lilienthal, and Christoph Jacobi. "Trend analyses of solar tides in the middle atmosphere." Universität Leipzig, 2019. https://ul.qucosa.de/id/qucosa%3A74180.

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Using a mechanistic global circulation model, we analysed the trends of solar tides in the middle atmosphere. Forced by monthly mean assimilation of reanalysis data in the lower atmosphere and monthly adjusted CO2 and ozone distributions, the simulations represent a time period from January 1980 to May 2019. The time series of monthly mean wind and temperature amplitudes of all tidal components have been extracted from these data. Trend analyses by linear regression show prevailing negative trends in July and October for all tides and for all latitudes in the mesosphere and lower thermosphere.

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25

Geißler, Christoph, and Ch Jacobi. "Forcing of the Quarterdiurnal Tide." Universität Leipzig, 2018. https://ul.qucosa.de/id/qucosa%3A31792.

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Ensemble calculations for the period from 2000 to 2010 were carried out with the middle and upper atmosphere model (MUAM), and an analysis of the quarterdiurnal tide is performed. The global temporal and latitudinal distributions of the quarterdiurnal tide are modeled with MUAM, and their forcing mechanisms are examined. The quarterdiurnal tides show a similar distribution over the year in the northern and southern hemisphere, with maxima of the amplitude in late winter and spring as well as in autumn. In the latitude-height distribution is also shown that the largest amplitudes of the quarter

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26

Sahu, Parameswar. "Use of Time Series, Barometric and Tidal Analyses to Conceptualize and Model Flow in an Underground Mine: The Corning Mine Complex, Ohio." Ohio University / OhioLINK, 2004. http://www.ohiolink.edu/etd/view.cgi?ohiou1108395116.

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27

Stevens, M. H., D. E. Siskind, J. S. Evans, et al. "Martian mesospheric cloud observations by IUVS on MAVEN: Thermal tides coupled to the upper atmosphere." AMER GEOPHYSICAL UNION, 2017. http://hdl.handle.net/10150/624978.

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We report observations of Martian mesospheric ice clouds and thermospheric scale heights by the Imaging Ultraviolet Spectrograph on NASA's Mars Atmosphere and Volatile Evolution mission. The clouds are observed between 6A.M. and 8A.M. local time using mid-UV limb observations between 60 and 80km tangent altitude where ice particles that scatter sunlight can appear as detached layers near the equator. The equatorial longitudinal distribution shows populations of clouds near -110 degrees E and -10 degrees E as well as a population near 90 degrees E, which does not have a clear precedent. The clo

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28

Mathers, Eunice Lucy. "Sea level response to atmospheric pressure and wind forcing in the global deep ocean." Thesis, University of Liverpool, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367977.

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29

Kumar, Aishwarya S. "Non-migrating tides in the Martian thermosphere." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/85828.

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Previous studies have identified longitudinal structures associated with non-migrating tides in observations of the upper neutral atmosphere of Mars. MAVEN’s Imaging Ultraviolet Spectrometer (IUVS) observations of the upper atmosphere reveal variations in density with longitude at altitudes of 130 – 200 km, and can be used to identify non-migrating tides. These observations cover higher latitudes and allow for studying the local time variations of tides. The analysis presented here shows that the longitudinal structure attributed to non-migrating tides is dominated by wavenumber 2 and wavenumb

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30

Signell, Richard P. "Tide- and wind-forced currents in Buzzards Bay, Massachusetts." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/58333.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1987.<br>Microfiche copy available in Archives and Science.<br>Bibliography: leaves 83-86.<br>by Richard Peter Signell.<br>M.S.

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31

Betts, Makayla N. (Makayla Nicole). "Gene transfer history of carbon fixation proteins constrains marine cyanobacteria divergence times." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/118026.

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Thesis: S.M. in Geophysics, Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2018.<br>Cataloged from PDF version of thesis. "June 2018."<br>Includes bibliographical references (pages 18-24).<br>Carboxysomes provide an avenue for narrowing the timing of evolutionary events in groups of cyanobacteria that are ecologically dominant in modem marine environments - groups that may have an integral role in oxygenating the Earth's atmosphere. Here I show that using concatenated phylogenies of carbon fixation proteins better informs the horizontal gene tr

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32

Thayalan, Vid. "Atmospheric contribution to the dissipation of the gravitational tide of Phobos on Mars." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45790.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2008.<br>Includes bibliographical references (p. 29).<br>Here, we investigate the possibility of a significant atmospheric contribution to the tidal dissipation of the Phobos-Mars system. We apply the classical tidal theory and we find that most of gravitational forcing is projected into the first symmetric Hough mode which has an equivalent depth of about 57 km and it is significantly trapped in the vertical. Therefore, no significant dissipation occurs through the vertical propagation o

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33

Withnell, Anthony James. "Relative sea-level variations revealed by tide-gauge records of long duration." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/58421.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1990.<br>Includes bibliographical references (leaves 65-67).<br>by Anthony James Withnell.<br>M.S.

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34

Medvedev, Alexander S., Hiromu Nakagawa, Chris Mockel, et al. "Comparison of the Martian thermospheric density and temperature from IUVS/MAVEN data and general circulation modeling." AMER GEOPHYSICAL UNION, 2016. http://hdl.handle.net/10150/614739.

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Newly released Imaging Ultraviolet Spectrograph/Mars Atmosphere and Volatile EvolutioN (IUVS/MAVEN) measurements of CO2 density in the Martian thermosphere have been used for comparison with the predictions of the Max Planck Institute Martian General Circulation Model (MPI-MGCM). The simulations reproduced (within one standard deviation) the available zonal mean density and derived temperature above 130 km. The MGCM replicated the observed dominant zonal wave number 3 nonmigrating tide and demonstrated that it represents a nonmoving imprint of the topography in the thermosphere. The comparison

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35

Fröhlich, Kristina, Alexander Pogoreltsev, and Christoph Jacobi. "Tides, Rossby and Kelvin waves simulated with the COMMA-LIM Model." Universitätsbibliothek Leipzig, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-217759.

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A 48-layer version of the COMMA-LIM (Cologne Model of the Middle Atmosphere – Leipzig Institute for Meteorology) three-dimensional global mechanistic model of the Earth\'s atmosphere from 0 km to 135 km with logarithmic pressure height coordinates was developed. The model is capable of reproducing the global structures and propagation of different planetary waves in the middle atmosphere. The contribution of gravity waves, tides, Rossby and Kelvin waves into the zonally averaged momentum budget of the mesosphere / lower thermosphere region has been investigated<br>Eine neue Version des COMMA-L

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36

Chang, Loren. "Analysis of the migrating diurnal tide in the Whole Atmosphere Community Climate Model." Diss., Connect to online resource, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1439426.

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37

Fröhlich, Kristina, Alexander Pogoreltsev, and Christoph Jacobi. "Tides, Rossby and Kelvin waves simulated with the COMMA-LIM Model." Wissenschaftliche Mitteilungen des Leipziger Instituts für Meteorologie ; 30 = Meteorologische Arbeiten aus Leipzig ; 8 (2003), S. 149-156, 2003. https://ul.qucosa.de/id/qucosa%3A15248.

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A 48-layer version of the COMMA-LIM (Cologne Model of the Middle Atmosphere – Leipzig Institute for Meteorology) three-dimensional global mechanistic model of the Earth\''s atmosphere from 0 km to 135 km with logarithmic pressure height coordinates was developed. The model is capable of reproducing the global structures and propagation of different planetary waves in the middle atmosphere. The contribution of gravity waves, tides, Rossby and Kelvin waves into the zonally averaged momentum budget of the mesosphere / lower thermosphere region has been investigated.<br>Eine neue Version des COMMA

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38

Morley, Danielle M. "Environmental Enhancement Gone Awry: Characterization of an Artificial Reef Constructed From Waste Vehicle Tires." NSUWorks, 2009. http://nsuworks.nova.edu/occ_stuetd/231.

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In 1967, Broward County, Florida resource managers initiated a project to construct an artificial reef to enhance recreational fishing using waste vehicle tires. An estimated two million unballasted tires were bundles and deployed in bundles approximately 1.8km offshore in 21m of water on sandy substrate separating the middle and outer reef tracts, running parallel to the coast. Over time, bindings on the tire bundles failed and the tires became mobile with normal currents and high energy storms. The tires have apparently moved extensively, travelling kilometers from their original location to

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39

Lilienthal, Friederike, and Christoph Jacobi. "The Role of Solar Heating in the Forcing of the Terdiurnal Tide." Universität Leipzig, 2016. https://ul.qucosa.de/id/qucosa%3A16705.

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We use the middle and upper atmosphere model (MUAM) to analyze forcing mechanisms of the terdiurnal tide (TDT) in the middle atmosphere, namely solar heating and nonlinear wave-wave interactions. First, we present model amplitudes of the TDT during January conditions as a validation and for reference. By switching off single forcings for wavenumber 3 in different model runs we are able to separate the solar and nonlinear forcing contribution. The simulations suggest that solar forcing is the major driver for TDT at low latitudes while nonlinear interactions become more important at middle and

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40

Senf, Fabian [Verfasser], Ulrich [Akademischer Betreuer] Achatz, and Erich [Akademischer Betreuer] Becker. "On the interaction between thermal tides and gravity waves in the middle atmosphere / Fabian Senf. Gutachter: Ulrich Achatz ; Erich Becker. Betreuer: Ulrich Achatz." Frankfurt am Main : Univ.-Bibliothek Frankfurt am Main, 2012. http://d-nb.info/1044275669/34.

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41

Sandford, David J. "Dynamics of the stratosphere, mesosphere and thermosphere." Thesis, University of Bath, 2008. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.512300.

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This thesis presents observations of the dynamical features of the stratosphere, mesosphere and lower thermosphere. These are made from various observational techniques and model comparisons. A focus of the work is the two-day wave at high latitudes in the MLT region. This has revealed significant wave amplitudes in both summer and winter. However, these waves are shown to have very different origins. Using satellite data, the summertime wave is found to be the classic quasi-two-day wave which maximises at mid-latitudes in the MLT region. The wintertime wave is found to be a mesospheric manife

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42

Freitas, Sidcléa Sousa de. "Benefícios sociais e ambientais do coprocessamento de pneus inservíveis: estudo de caso na cidade de João Pessoa-PB." Universidade Federal da Paraíba, 2010. http://tede.biblioteca.ufpb.br:8080/handle/tede/5446.

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Made available in DSpace on 2015-05-14T12:09:00Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 2882491 bytes, checksum: 63053abfc1b2a2289e31cfbab24c0e3e (MD5) Previous issue date: 2010-09-30<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>The useless tire is a residue that must be managed correctly until its final disposal as well as its collection and storage must be done adequately. Therefore, if it is inadequately disposed of, it can cause damages to the environment and to public health. In March 2005 the city of João Pessoa, initiated a program called Prog

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43

Garrett, Matthew. "Influence of Water Column Stratification and Nutrient Gradients on the Migratory Behavior of the Red Tide Dinoflagellate, Karenia brevis." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5950.

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Diel vertical migration (DVM) can offer motile phytoplankton a competitive advantage over other phytoplankton species. DVM has been well documented in the harmful dinoflagellate, Karenia brevis; however, the extent to which changes in nutrient regimes and density stratification modify migration patterns has not been thoroughly investigated. A 2 m experimental column was constructed with sensors and sampling ports at four depths to obtain fluorescence and temperature measurements and discrete water samples. The environmental parameters of the experimental column represented temperature and nutr

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44

Beldon, Charlotte. "VHF radar studies of mesosphere and thermosphere." Thesis, University of Bath, 2008. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.512294.

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45

Jordan, Anna C. "Patterns in Caribbean Coral Spawning." Thesis, NSUWorks, 2018. https://nsuworks.nova.edu/occ_stuetd/468.

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Most corals worldwide are broadcast spawners that rely on synchronous gamete release for successful fertilization. Spawning synchrony may also decrease the probability of heterospecific fertilization that may produce maladaptive hybrids. Despite the importance of reproductive timing, researchers have only recently begun to collect spawning data across coral species in the Caribbean, but these data remain to be analyzed. This study investigates interannual, seasonal, and environmental patterns that may influence Caribbean scleractinian spawning times. The number of spawning observations varies

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Arana, Daniel. "A maré terrestre : aspectos teóricos e práticos /." Presidente Prudente, 2020. http://hdl.handle.net/11449/192164.

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Orientador: Paulo de Oliveira Camargo<br>Resumo: Existem dados de estações de maré terrestre em todo território nacional que estiveram em operação nos últimos anos. Contudo cada região de coleta apresenta um ou mais efeitos geofísicos predominantes, causando uma heterogeneidade dos dados e abrindo a possibilidade para diversos estudos. A minimização de efeitos geofísicos em observações gravimétricas é um grande desafio na geração de modelos de maré terrestre. Desta forma, esta pesquisa tem como objetivo estudar as metodologias para correções das cargas atmosférica e oceânica nos diferentes cen

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El, masri Ahmad. "Étude cinétique et mécanistique de la réactivité des composés organophosphorés avec les photooxydants atmosphériques." Thesis, Reims, 2014. http://www.theses.fr/2014REIMS026/document.

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Cette thèse établit le schéma de dégradation hétérogène du chlorpyriphos éthyl (CLP) sous l'action des radicaux OH et de l'ozone pour des dépôts de CLP sur des plaques de quartz et sous celle l'ozone pour différentes contaminations de sable en CLP. Les constantes cinétiques de la dégradation hétérogène sont déterminées dans un réacteur photo-chimique couplé à un système GC/MS. Le chlorpyriphos-oxon (CLPO) et le trichloropyridinol (TCP) sont les produits de dégradation détectés en phase hétérogène quels que soit l'oxydant et le support. La réactivité hétérogène du CLPO vis-à-vis de l’ozone et d

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Auclair-Desrotour, Pierre. "Dissipation des marées thermiques atmosphériques dans les super-Terres." Thesis, Paris Sciences et Lettres (ComUE), 2016. http://www.theses.fr/2016PSLEO015/document.

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Cette thèse traite de la modélisation des marées fluides des planètes telluriques du système solaire et des systèmes exoplanétaires.En premier lieu, nous examinons la réponse de marée des couches atmosphériques, soumises au potentiel de marée gravifique et au forçage thermique de l’étoile hôte du système. Nous proposons un nouveau modèle global prenant en compte les processus dissipatifs avec un refroidissement newtonien, modèle à partir duquel nous traitons la dynamique des ondes de marées engendrées par ces forçages, et quantifions leur dissipation, le nombre de Love et le couple de marée ex

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Rappucci, Gina. "Tidal Cycle Effects on the Occurrence of the Florida Manatee (Trichechus manatus latirostris) at the Port Everglades Power Plant." NSUWorks, 2009. http://nsuworks.nova.edu/occ_stuetd/228.

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The seasonal distribution of the Florida manatee (Trichechus manatus latirostris) is influenced predominantly by feeding locations in the summer and proximity to warm-water refuges during colder months. Due to their limited ability to tolerate cold water, when water temperatures drop below 20°C manatees congregate around natural and artificial warm-water refuges, such as warm-water springs or power plant outfalls. Distribution may further be influenced by the tidal cycle through its impact on manatee movement and foraging. Although the importance of tide on manatee distribution and habitat sel

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Foster, Kristi A. "Field Ecology Patterns of High Latitude Coral Communities." NSUWorks, 2011. http://nsuworks.nova.edu/occ_stuetd/82.

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Some climate models predict that, within the next 30-50 years, sea surface temperatures (SSTs) will frequently exceed the current thermal tolerance of corals (Fitt et al. 2001; Hughes et al. 2003; Hoegh-Guldberg et al. 2007). A potential consequence is that mass coral bleaching may take place (i) during warm El Niño-Southern Oscillation (ENSO) events which are predicted to occur in some regions more frequently than the current 3-7 year periodicity (Hoegh-Guldberg 1999; Sheppard 2003) or (ii) perhaps as often as annually or biannually if corals and their symbionts are unable to acclimate to the

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