今週のうなぎセミナーについてお知らせいたします。

Here is information of the Unagi-seminar(January, 18).

************** Seminar on Seismology IV B, D /地震学ゼミナールIV B, D (Unagi Seminar) **************

科目：地震学ゼミナールIV B, D / Seminar on Seismology IV B, D（修士・博士）
日時：2024年 1月 18日 (木) 13:30~
場所：京都大学 防災研究所 本館E-232D または オンライン(Zoom)

Date and Time：2024-01-18, 13:30~
Place：Uji Campus Main Building E232D or Zoom (Hybrid)

　　　Please join the seminar on-site, especially students who need credit.

---------- ---------- ---------- ----------

Speaker（発表者）:　Like An

Title（題目）:　Offshore fault geometry revealed from earthquake locations using new state-of-art techniques: the case of the 2022 Adriatic Sea earthquake sequence

Abstract（要旨）:
On November 9, 2022, 6:07 AM (UTC), an Mw 5.5 earthquake occurred 30 km NE off the coast of Fano, Italy. Since locating offshore earthquakes is challenging, we have applied a combined approach to better constrain the geometry and depth of the sequence’ events. Six M3+ events were first relocated using a travel time stacking method. Next, using the six M3+ earthquakes as reference events, we applied an interevent-distance method to reconstruct the earthquake cluster geometry and locate the remaining events, including the mainshock. The results reveal a 25-35 degree SW dipping cluster. The depth of the mainshock hypocenter obtained using this procedure agrees well with that determined by using depth phases. The relatively sharp earthquake cluster geometry obtained in this study is consistent with the thrust faults revealed by a local seismic reflection survey and focal mechanism solutions.

---------- ---------- ---------- ----------