\addvspace {10\p@ }
\contentsline {xchapter}{Introduction}{2}
\contentsline {figure}{\numberline {1.1}{\ignorespaces The Fraunhofer lines}}{3}
\contentsline {figure}{\numberline {1.2}{\ignorespaces Solar irradiance}}{4}
\contentsline {figure}{\numberline {1.3}{\ignorespaces A 3-dimensional view of the Sun}}{5}
\contentsline {figure}{\numberline {1.4}{\ignorespaces The VAL model}}{8}
\contentsline {figure}{\numberline {1.5}{\ignorespaces Line profiles of Ca\nobreakspace {}{\sc ii}\nobreakspace {}K and {H\relax \fontsize {10}{12}\selectfont \abovedisplayskip 10\p@ plus2\p@ minus5\p@ \abovedisplayshortskip \z@ plus3\p@ \belowdisplayshortskip 6\p@ plus3\p@ minus3\p@ \def \leftmargin \leftmargini \parsep 5\p@ plus2.5\p@ minus\p@ \topsep 10\p@ plus4\p@ minus6\p@ \itemsep 5\p@ plus2.5\p@ minus\p@ {\leftmargin \leftmargini \topsep 6\p@ plus2\p@ minus2\p@ \parsep 3\p@ plus2\p@ minus\p@ \itemsep \parsep }\belowdisplayskip \abovedisplayskip ${\alpha }$\relax \fontsize {12}{14.5}\selectfont \abovedisplayskip 12\p@ plus3\p@ minus7\p@ \abovedisplayshortskip \z@ plus3\p@ \belowdisplayshortskip 6.5\p@ plus3.5\p@ minus3\p@ \belowdisplayskip \abovedisplayskip \let \leftmargin \leftmargini \parsep 5\p@ plus2.5\p@ minus\p@ \topsep 10\p@ plus4\p@ minus6\p@ \itemsep 5\p@ plus2.5\p@ minus\p@ \leftmargin \leftmargini \parsep 5\p@ plus2.5\p@ minus\p@ \topsep 10\p@ plus4\p@ minus6\p@ \itemsep 5\p@ plus2.5\p@ minus\p@ }}}{9}
\contentsline {figure}{\numberline {1.6}{\ignorespaces The magnetic canopy effect}}{11}
\contentsline {figure}{\numberline {1.7}{\ignorespaces Photospheric granulation}}{12}
\contentsline {figure}{\numberline {1.8}{\ignorespaces Imaging in {H\relax \fontsize {10}{12}\selectfont \abovedisplayskip 10\p@ plus2\p@ minus5\p@ \abovedisplayshortskip \z@ plus3\p@ \belowdisplayshortskip 6\p@ plus3\p@ minus3\p@ \def \leftmargin \leftmargini \parsep 5\p@ plus2.5\p@ minus\p@ \topsep 10\p@ plus4\p@ minus6\p@ \itemsep 5\p@ plus2.5\p@ minus\p@ {\leftmargin \leftmargini \topsep 6\p@ plus2\p@ minus2\p@ \parsep 3\p@ plus2\p@ minus\p@ \itemsep \parsep }\belowdisplayskip \abovedisplayskip ${\alpha }$\relax \fontsize {12}{14.5}\selectfont \abovedisplayskip 12\p@ plus3\p@ minus7\p@ \abovedisplayshortskip \z@ plus3\p@ \belowdisplayshortskip 6.5\p@ plus3.5\p@ minus3\p@ \belowdisplayskip \abovedisplayskip \let \leftmargin \leftmargini \parsep 5\p@ plus2.5\p@ minus\p@ \topsep 10\p@ plus4\p@ minus6\p@ \itemsep 5\p@ plus2.5\p@ minus\p@ \leftmargin \leftmargini \parsep 5\p@ plus2.5\p@ minus\p@ \topsep 10\p@ plus4\p@ minus6\p@ \itemsep 5\p@ plus2.5\p@ minus\p@ }}}{16}
\contentsline {figure}{\numberline {1.9}{\ignorespaces Solar flares, CMEs, and aurora}}{19}
\contentsline {figure}{\numberline {1.10}{\ignorespaces Various models of the lower solar atmosphere}}{22}
\addvspace {10\p@ }
\contentsline {xchapter}{Wave Heating of the Chromosphere}{26}
\contentsline {figure}{\numberline {2.1}{\ignorespaces Acoustic-gravity dispersion diagram}}{37}
\contentsline {figure}{\numberline {2.2}{\ignorespaces Wave modes in a flux tube}}{41}
\contentsline {figure}{\numberline {2.3}{\ignorespaces Formation of a shock wave}}{44}
\addvspace {10\p@ }
\contentsline {xchapter}{Instrumentation}{47}
\contentsline {figure}{\numberline {3.1}{\ignorespaces The Richard B. Dunn Solar Telescope}}{48}
\contentsline {figure}{\numberline {3.2}{\ignorespaces Optical set-up for {{\sl DST}}}}{49}
\contentsline {figure}{\numberline {3.3}{\ignorespaces {{\sl TRACE}} spacecraft}}{51}
\contentsline {figure}{\numberline {3.4}{\ignorespaces {{\sl TRACE}} ultraviolet filter passbands}}{53}
\contentsline {figure}{\numberline {3.5}{\ignorespaces {{\sl TRACE}} ultraviolet response functions}}{54}
\addvspace {10\p@ }
\contentsline {xchapter}{Oscillations in {Ca\nobreakspace {}{\sc ii}\nobreakspace {}K$_3$} Observations of the Quiet-Sun Network}{56}
\contentsline {figure}{\numberline {4.1}{\ignorespaces Time averaged Ca\nobreakspace {}{\sc ii}\nobreakspace {}K$_3$\ image}}{61}
\contentsline {figure}{\numberline {4.2}{\ignorespaces Choice of threshold for an NBP}}{62}
\contentsline {figure}{\numberline {4.3}{\ignorespaces Description of thresholding contours on an NBP}}{63}
\contentsline {figure}{\numberline {4.4}{\ignorespaces The effect or removing low-frequency power}}{66}
\contentsline {figure}{\numberline {4.5}{\ignorespaces High-pass filter frequency response curve}}{68}
\contentsline {figure}{\numberline {4.6}{\ignorespaces Power spectra of a single NBP at different threshold values}}{70}
\contentsline {figure}{\numberline {4.7}{\ignorespaces Power against threshold for an example NBP}}{71}
\contentsline {figure}{\numberline {4.8}{\ignorespaces Change of frequency with increasing threshold}}{73}
\addvspace {10\p@ }
\contentsline {xchapter}{Oscillations in Multi-Wavelength Optical Observations of the Quiet-Sun Network}{77}
\contentsline {figure}{\numberline {5.1}{\ignorespaces Layered plot of the quiet Sun throughout the solar atmosphere}}{82}
\contentsline {figure}{\numberline {5.2}{\ignorespaces Filter profile plotted with line profiles for {{\sl DST}} wavelengths}}{83}
\contentsline {figure}{\numberline {5.3}{\ignorespaces Windowed FFT and wavelet analysis}}{85}
\contentsline {figure}{\numberline {5.4}{\ignorespaces The morlet wavelet}}{86}
\contentsline {figure}{\numberline {5.5}{\ignorespaces Example wavelet power transform for Ca\nobreakspace {}{\sc ii}\nobreakspace {}K$_3$\ data}}{89}
\contentsline {figure}{\numberline {5.6}{\ignorespaces Example wavelet power transform for Mg\nobreakspace {}{\sc {i}}\nobreakspace {}b$_2$\ data}}{90}
\contentsline {figure}{\numberline {5.7}{\ignorespaces Peak correlation against frequency and timelag}}{91}
\addvspace {10\p@ }
\contentsline {xchapter}{Oscillations in {{\sl TRACE}} Observations of the Quiet-Sun Chromosphere}{106}
\contentsline {figure}{\numberline {6.1}{\ignorespaces Time averaged {{\sl TRACE}} data}}{110}
\contentsline {figure}{\numberline {6.2}{\ignorespaces Network and internetwork masks}}{113}
\contentsline {figure}{\numberline {6.3}{\ignorespaces Network light curve wavelet power transform}}{114}
\contentsline {figure}{\numberline {6.4}{\ignorespaces Internetwork oscillations}}{116}
\contentsline {figure}{\numberline {6.5}{\ignorespaces Internetwork occurrence rate and Fourier power}}{118}
\contentsline {figure}{\numberline {6.6}{\ignorespaces Network oscillations}}{120}
\contentsline {figure}{\numberline {6.7}{\ignorespaces Network occurrence rate and Fourier power}}{121}
\contentsline {figure}{\numberline {6.8}{\ignorespaces Comparison of network and internetwork oscillations in each passband}}{128}
\addvspace {10\p@ }
\contentsline {xchapter}{Concluding Remarks and Future Work}{133}