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<article language="en">
	<journal>
		<journal_title>Nonlinear Processes  in Geophysics</journal_title>
		<journal_url>www.nonlin-processes-geophys.net</journal_url>
		<issn>1023-5809</issn>
		<eissn>1607-7946</eissn>
		<volume_number>15</volume_number>
		<issue_number>1</issue_number>
		<publication_year>2008</publication_year>
	</journal>
	<doi>10.5194/npg-15-25-2008</doi>
	<article_url>http://www.nonlin-processes-geophys.net/15/25/2008/</article_url>
	<abstract_html>http://www.nonlin-processes-geophys.net/15/25/2008/npg-15-25-2008.html</abstract_html>
	<fulltext_pdf>http://www.nonlin-processes-geophys.net/15/25/2008/npg-15-25-2008.pdf</fulltext_pdf>
	<start_page>25</start_page>
	<end_page>32</end_page>
	<publication_date>2008-01-28</publication_date>
	<article_title content_type="html">Sequence of eruptive events in the Vesuvio area recorded in shallow-water  Ionian Sea sediments</article_title>
	<authors>
		<author numeration="1" affiliations="1">
			<name>C. Taricco</name>
			<email>taricco@ph.unito.it</email>
		</author>
		<author numeration="2" affiliations="1">
			<name>S. Alessio</name>
		</author>
		<author numeration="3" affiliations="1">
			<name>G. Vivaldo</name>
		</author>
	</authors>
	<affiliations>
		<affiliation numeration="1" content_type="html">Dipartimento di Fisica Generale dell&apos;Università, V. Pietro  Giuria 1, 10125 Torino, Italy and Istituto di Fisica dello Spazio  Interplanetario (IFSI)-INAF, C. Fiume 4, 10133 Torino, Italy</affiliation>
	</affiliations>
	<abstract content_type="html">The dating of the cores we drilled from the Gallipoli terrace in the
Gulf of Taranto (Ionian Sea), previously obtained by tephroanalysis,
is checked by applying a method to objectively recognize volcanic
events. This automatic statistical procedure allows identifying
pulse-like features in a series and evaluating quantitatively the
confidence level at which the significant peaks are detected. We
applied it to the 2000-years-long pyroxenes series of the GT89-3
core, on which the dating is based. The method confirms the dating
previously performed by detecting at a high confidence level the
peaks originally used and indicates a few possible undocumented
eruptions. Moreover, a spectral analysis, focussed on the long-term
variability of the pyroxenes series and performed by several
advanced methods, reveals that the volcanic pulses are superimposed
to a millennial trend and a 400 years oscillation.</abstract>
	<references>
		<reference numeration="1" content_type="text"> Allen, M. R. and Smith, L. A.: Monte Carlo SSA: detecting oscillations in the presence of coloured noise, J. Climate, 9, 3373&amp;ndash;3404, 1996. </reference>
		<reference numeration="2" content_type="text"> Arnò, V., Principe, C., Rosi, M., Santacroce, R., Sbrana, A., and Sheridan, M. F.: Eruptive History, in: Somma-Vesuvius, Quaderni de La Ricerca Scientifica, edited by Santacroce R., CNR, Roma, Italy, 114(8), 53&amp;ndash;103, 1987. </reference>
		<reference numeration="3" content_type="text"> Bonino, G., Cini Castagnoli, G., Callegari, E., and Zhu, G. M.: Radiometric and tephroanalysis dating of recent Ionian sea cores, Nuovo Cimento C, 16, 155&amp;ndash;161, 1993. </reference>
		<reference numeration="4" content_type="text"> Cini Castagnoli, G., Bonino, G., Caprioglio, F., Provenzale, A., Serio, M., and Zhu, G. M.: The carbonate profile of two recent Ionian sea cores: evidence that the sedimentation rate is constant over the last millennia, Geophys. Res. Lett., 17, 1937&amp;ndash;1940, 1990. </reference>
		<reference numeration="5" content_type="text"> Cini Castagnoli, G., Bonino, G., Provenzale, A., Serio, M., and Callegari, E.: The $CaCO_3$ profiles of deep and shallow Mediterranean sea cores as indicators of past solar-terrestrial relationship, Nuovo Cimento C, 15, 547&amp;ndash;563, 1992. </reference>
		<reference numeration="6" content_type="text"> Cini Castagnoli, G., Bonino, G., Della Monica, P., Taricco, C., and Bernasconi, S. M.: Solar activity in the last millennium recorded in the $\delta^18O$ profile of planktonic foraminifera of a shallow water Ionian Sea core, Solar Physics, 188(1), 191&amp;ndash;202, 1999. </reference>
		<reference numeration="7" content_type="text"> Cini Castagnoli, G., Bonino, G., and Taricco, C.: Long term solar-terrestrial records from sediments: carbon isotopes in planktonic foraminifera during the last millennium, Adv. Space Res., 29(10), 1537&amp;ndash;1549, 2002. </reference>
		<reference numeration="8" content_type="text"> Foufoula-Georgiou, E. and Kumar, P. (Eds.): Wavelets in Geophysics, Academic Press, San Diego, California, 1994. </reference>
		<reference numeration="9" content_type="text"> Gencay, R., Selcuk, S., and Whitcher, B.: An Introduction to Wavelets and other Filtering Methods in Finance and Economics, Academic Press, San Diego, California, 2002. </reference>
		<reference numeration="10" content_type="text"> Ghil, M. and Vautard, R.: Interdecadal oscillations and the warming trend in global temperature time series, Nature, 350(6316), 324&amp;ndash;327, 1991. </reference>
		<reference numeration="11" content_type="text"> Ghil, M. and Taricco, C.: Advanced spectral analysis methods, in: Past and Present Variability of the Solar-terrestrial System: Measurement, Data Analysis and Theoretical Models, edited by: Cini Castagnoli, G. and Provenzale, A., IOS Press, Amsterdam, The Netherlands, 137&amp;ndash;159, 1997. </reference>
		<reference numeration="12" content_type="text"> Ghil, M. and Yiou, P. : Spectral methods: What they can and cannot do for climatic time series, in: Decadal Climate Variability: Dynamics and Predictability, edited by: Anderson, D. and Willebrand, J., Elsevier, Amsterdam, 139, 445&amp;ndash;482, 1996. </reference>
		<reference numeration="13" content_type="text"> Ghil, M., Allen, M. R., Dettinger, M. D., Ide, K., Kondrashov, D., Mann, M. E., Robertson, A. W., Saunders, A., Tian, Y., Varadi, F., and Yiou, P.: Advanced spectral methods for climatic time series, Rev. Geophys, 40(1), 3.1&amp;ndash;3.41, 2002. </reference>
		<reference numeration="14" content_type="text"> Guo, W., Wang, Y., and Brown, M. B.: A Signal Extraction Approach to Modeling Hormone Time Series with Pulses and a Changing Baseline, J. Am. Stat. Assoc., 94(447), 746&amp;ndash;756, 1999. </reference>
		<reference numeration="15" content_type="text"> Guo, W. and Brown, M. B.: Structural time series models with feedback mechanisms, Biometrics, 56(3),686&amp;ndash;691, 2000. </reference>
		<reference numeration="16" content_type="text"> Harrison, P. J. and Stevens C. F.: A Bayesian approach to short-term forecasting, Op. Res. Quart., 22, 341&amp;ndash;362, 1971. </reference>
		<reference numeration="17" content_type="text"> Harrison, P. J. and Stevens C. F.: Bayesian forecasting, J. Royal Stat. Soc. Ser B, 38, 205&amp;ndash;247, 1976. </reference>
		<reference numeration="18" content_type="text"> Krishnaswamy, S., Lal, D., Martin, J., and Meybeck, M.: Geochronology of lake sediments, Earth Planet. Sci. Lett., 11, 407&amp;ndash;414, 1971. </reference>
		<reference numeration="19" content_type="text"> Kushler, R. and Brown, M. B.: A model for the identification of hormone pulses, Statistic in Medicine, 10, 329&amp;ndash;340, 1991. </reference>
		<reference numeration="20" content_type="text"> Mallat, S.: A theory for multiresolution signal decomposition: The wavelet representation, IEEE T. Pattern Anal., 11, 674&amp;ndash;693, 1989. </reference>
		<reference numeration="21" content_type="text"> Mann, M. E. and Lees, J. M.: Robust estimation of background noise and signal detection in climatic time series, Climatic Change, 33, 409&amp;ndash;445, 1996. </reference>
		<reference numeration="22" content_type="text"> Martinson, D. G., Bryan, K., Ghil, M., Hall, M. M., Karl, T. R., Sarachik, E. S., Sorooshian, S., and Talley, L. D. (Eds.): National Research Council, Natural Climate Variability on Decade-to-Century Time Scales, National Academy Press, Washington D.C., USA, 1995. </reference>
		<reference numeration="23" content_type="text"> Nason, G. P. and Silverman, B. W.: The stationary wavelet transform and some statistical applications, in: Wavelets and Statistics, volume 103 of Lecture Notes in Statistics, edited by: Antoniadis, A. and Oppenheim, G., Springer-Verlag, New York, USA, 103, 281&amp;ndash;300, 1995. </reference>
		<reference numeration="24" content_type="text"> Naveau, P., Amman, C., Oh H. S., and Guo, W. : An automatic statistical methodology to extract pulse like forcing factors in climatic time series, in: Volcanism and the Earth&apos;s Atmosphere, Geophys. Monogr. Ser., edited by: Robock, A., AGU, Washington, D. C., USA, 139, 177&amp;ndash;186, 2003. </reference>
		<reference numeration="25" content_type="text"> Naveau, P. and Amman, C.: Statistical distributions of ice core sulfate from climatically relevant volcanic eruptions, Geophys. Res. Lett., 32, L05711, doi:10.1029/2004GL021732, 2005. </reference>
		<reference numeration="26" content_type="text"> Percival, D. B. and Walden, A. T.: Wavelet methods for time series analysis, Cambridge University Press, Cambridge, UK, 2000. </reference>
		<reference numeration="27" content_type="text"> Plaut, G., Ghil, M., and Vautard, R.: Interannual and interdecadal variability in 335 y of Central England temperatures, Science, 268(5211), 710&amp;ndash;713, 1995. </reference>
		<reference numeration="28" content_type="text"> Torrence, C. and Compo, G. P.: A Practical Guide to Wavelet Analysis, B. Am. Meteorol. Soc., 79, 61&amp;ndash;78, 1998. </reference>
		<reference numeration="29" content_type="text"> Vautard, R., Yiou, P., and Ghil, M.: Singular-Spectrum Analysis: A Toolkit for short, noisy chaotic signals, Physica D, 58, 95&amp;ndash;126, 1992. </reference>
		<reference numeration="30" content_type="text"> Wahba, G.: Improper priors, spline smoothing and the problem of guarding against model errors in regression, J. Royal Stat. Soc. Ser B, 40, 364&amp;ndash;372, 1978. </reference>
		<reference numeration="31" content_type="text"> Wecker, H. L. and Ansley C. F.: The signal extraction approach to nonlinear regression and spline smoothing, J. Amer. Stat. Ass., 78, 81&amp;ndash;89, 1983.  </reference>
	</references>
</article>

