Academic Studies / Akademik Çalışmalar
(Tez, Yayın, Bildiri ve Sunumlar)

● B.Sc. Thesis / Lisans Tezi : “Depremlerin Önceden Belirlenmesi Çalışmaları”, İstanbul Üniversitesi Mühendislik Fakültesi Jeofizik Mühendisliği (1996)
 

● M.Sc. Thesis / Yüksek Lisans Tezi : “Recent Earthquake Clusterings in the Eastern Part of Marmara Region and Related Problems“, Bogazici University, Kandilli Observatory and Earthquake Research Institute, Department of Geophysics (2000)

I. Solar Physics / Güneş Fiziği

● "Periodic Variation of Solar Flare Index for the Last Solar Cycle (Cycle 24)", A Ozguc, A Kilcik, V Sarp, H Yesilyaprak, R Pektas.
Advances in Astronomy, 2021. Article ID 5391091, 8 pages, 2021. https://doi.org/10.1155/2021/5391091 (paper)

● "Comparison of FI and the MCMESI For the Last Two Solar Cycles", Kilcik A., Ozguc A., Yesilyaprak H., Pektas R.
Space Research and Technologies Institute Bulgarian Academy of Sciences, 23. 11th Workshop 'Solar Influences on the Magnetosphere, Ionosphere and Atmosphere', 3-7 June 2019 Primorsko / Bulgaria (paper) / (presentation)

● "The Variability of foF2 in Different Phases of Solar Cycle 23″, Ataç T., Özgüç A., Pektaş R.
Journal of Atmospheric and Solar-Terrestrial Physics, 71, 5, 583-588, 2009. SCIE – CPCI-S (paper)

● “Ionospheric foF2 Data and Its Response to Solar Activity Cycles 21, 22 and 23″, R. Pektaş, A.Özgüç and T.Ataç.
Solnechno-Zemnaya Fizika / Russian J. Solar-Terrestrial Physics, 12.T.2. (2008) 246-247.

● “Examination of the solar cycle variation of foF2 for cycles 22 and 23”, Özgüç, A., Ataç, T., Pektaş, R.
Journal of Atmospheric and Solar-Terrestrial Physics, 70, 2-4, 268-276, 2008. SCIE – CPCI-S (paper)

● “Response of Ionospheric foF2 Data to Solar Activity Cycles 21, 22 and 23″, R. Pektaş, A.Özgüç and T.Ataç.
The Fourth UN/ESA/NASA/JAXA Workshop on the International Heliophysical Year 2007 and Basic Space Science, “First Results from the International Heliophysical Year 2007”, 02-06 June 2008, Sozopol / Bulgaria

● “The Variability of foF2 In Different Phases of Solar Cycle 23″, Ataç T., Özgüç A., Pektaş R.
The Fourth UN/ESA/NASA/JAXA Workshop on the International Heliophysical Year 2007 and Basic Space Science, “First Results from the International Heliophysical Year 2007”, 02-06 June 2008, Sozopol / Bulgaria

● “Ionospheric foF2 Data and Its Response to Solar Activity Cycles 21, 22 and 23″, R. Pektaş, A.Özgüç and T.Ataç.
First Middle East-Africa, Regional IAU Meeting, April 05-10 2008, Cairo / Egypt

● “Examination of the solar cycle variation of foF2 for cycles 22 and 23″, A. Özgüç, T. Ataç, and R. Pektaş.
First Middle East-Africa, Regional IAU Meeting, April 05-10 2008, Cairo / Egypt (presentation)

● “Ionospheric foF2 Data and Its Response to Solar Activity Cycles 21, 22 and 23″, R. Pektaş, A.Özgüç and T.Ataç.
“International Heliophysical Year 2007 : New insights into Solar-terrestrial physics” Symposium, November 05-11, 2007, Zvenigorod – Moscow / Russia (poster)

● “International Heliophysical Year 2007 Turkish National Activities”, A.Özgüç, T.Ataç, R. Pektaş, Y.Tulunay, E.Tulunay, Z.Kocabaş, E.Altuntaş, T.Yapıcı, E.T.Şenalp.
International Heliophysical Year (IHY) Science Kick-Off Meeting, February 19-20, 2007 Vienna / Austria

● “IHY Year 2007 National Activities in Turkey”, Y.Tulunay, E.Tulunay, Z.Kocabaş, E.Altuntaş, T.Yapıcı, E.T.Şenalp, A.Özgüç, T.Ataç, R. Pektaş.
International Heliophysical Year (IHY) Science Kick-Off Meeting, February 19-20, 2007 Vienna / Austria

● “Investigation of the Solar Cycle Variation of foF2 by Using Solar Flare Index and MgII Core-to-Wing Index For the Cycles 22 and 23”, Atila Özgüç, Tamer Ataç and Rıza Pektaş.
International Symposium on Recent Observations of the Sun-Earth System (ISROSES)
September 17-22, 2006 Bulgaria (poster)

● “23. Güneş Çevriminde Kısa Süreli Dönemli Değişimler”, Tamer Ataç, Atila Özgüç, Jan Rybak, Hülya Yeşilyaprak, Rıza Pektaş.
XV. Ulusal Astronomi Kongresi, 28 Ağustos – 1 Eylül 2006, İstanbul Kültür Üniversitesi (poster)

II. Geophysics / Jeofizik

● “P-wave Velocity Structure of the Crust and Its Relationship to the Occurrence of the 1999 İzmit, Turkey, Earthquake and Aftershocks”, Ayako Nakamura, Akira Hasegawa, Akihiko Ito, Balamir Üçer, Şerif Barış, Yoshimori Honkura, Toshio Kono, Shuichiro Hori, Rıza Pektaş, Tolga Komut, Cengiz Çelik, A.Mete Işıkara.
Bullettin of Seismological Society of America (BSSA), vol.92, no.1 [Dedicated Issue İzmit, Turkey, Earthquake of 17 August 1999], pp.330-338 , February 2002 (abstract) | DOI 10.1785/0120000803

● “Seismoelectromagnetic Effect Associated with the İzmit Earthquake and Its Aftershocks”, M. Matsushima, Y. Honkura, N. Oshiman, Ş. Barış, M.K. Tunçer, S.B. Tank, C. Çelik, F. Takahashi, M. Nakanishi, R. Yoshimura, R. Pektaş, T. Komut, E. Tolak, A. Ito, Y. Iio, A.M. Işıkara.
Bullettin of Seismological Society of America (BSSA), vol.92, no.1 [Dedicated Issue İzmit, Turkey, Earthquake of 17 August 1999], pp.350-360 , February 2002 (abstract) | DOI 10.1785/0120000807

● “Microearthquake Activity Before the İzmit Earthquake in the Eastern Marmara Region, Turkey (1 January 1993-17 August 1999)”
Şerif Barış, Akihiko Ito, S. Balamir Üçer, Yoshimori Honkura, Nafiz Kafadar, Rıza Pektaş, Tolga Komut, Ahmet Mete Işıkara. Bullettin of Seismological Society of America (BSSA), vol.92, no.1 [Dedicated Issue İzmit, Turkey, Earthquake of 17 August 1999], pp.394-405 , February 2002 (abstract) | DOI 10.1785/0120000826

● “Aftershock Activity of the 1999 İzmit, Turkey, Earthquake Revealed From Microearthquake Observations”, Akihiko Ito, Balamir Üçer, Şerif Barış, Ayako Nakamura, Yoshimori Honkura, Toshio Kono, Shuichiro Hori, Akira Hasegawa, Rıza Pektaş, Ahmet Mete Işıkara.
Bullettin of Seismological Society of America (BSSA), vol.92, no.1 [Dedicated Issue İzmit, Turkey, Earthquake of 17 August 1999], pp.418-427 , February 2002 (abstract)

● “Preliminary Results of Multidisciplinary Observations Before, During and After the Kocaeli (İzmit) Earthquake in the Western Part of the North Anatolian Fault Zone”, Y. Honkura, A.M. Işıkara, N. Oshiman, A. Ito, B. Üçer, Ş. Barış, M.K. Tunçer, M. Matsushima, R. Pektaş, C. Çelik, S.B. Tank, F. Takahashi, M. Nakanishi, R. Yoshimura, Y. Ikeda, T. Komut.
Earth Planets Space, 52, no.4, 293-298, 2000. (abstract), (paper) | DOI 10.1186/bf03351638

● “Precise Distribution of Aftershocks of the Izmit Earthquake of August 17, 1999, Turkey”, A. Ito, B. Üçer, Ş. Barış, Y. Honkura, T. Kono, A. Nakamura, R. Pektaş, Y. Ishikawa, A.Işıkara.
AGU (American Geophysical Union) 1999 Fall Meeting Program, December 13-17, 1999, San Francisco, California (abstract)

● “Temporary Observation of Aftershocks of the 1999 Kocaeli, Turkey Earthquake”, Ayako Nakamura, Toshio Kono, Akihiko Ito, Yukiko Ishikawa, Şerif Barış, Rıza Pektaş, S.Balamir Üçer, A.Mete Işıkara, Yoshimori Honkura, Akira Hasegawa.
Seismological Society of Japan, Fall Meeting 1999, p.34, Japan.

● “Preliminary Report on the Aftershocks of 1999 İzmit Earthquake, Turkey, Revealed From Microearthquake Observations”, Akihiko Ito, Balamir Üçer, Şerif Barış, Yoshimori Honkura, Ayako Nakamura, Toshio Kono, Riza Pektas, Tolga Komut, Akira Hasegawa, A. Mete Isikara.

● "The 1999 İzmit and Düzce Earthquakes: Preliminary Results", Editors: Aykut Barka, Özgür Kozacı, Serdar Akyüz and Erhan Altunel. Publisher: Istanbul Technical University, pages 225-232). 2000 (book)