【導讀】大部分的鉆孔在液化現(xiàn)象用幾個非液化鉆孔點觀察。隨后，開發(fā)了一個。依據(jù)估計覆蓋層的厚度和勞工生產(chǎn)力指數(shù)的圖表，這里液化和非液化的例子被策劃著。本研究成果可用于液化引起的地面干擾和為緩解這一地質(zhì)災害的預測。一些科學家已經(jīng)研究并提出了對土層液化潛能評估方法，雖然很少有研究報。由Ishihara收集的資料來自無論。的有無兩次地震引發(fā)的液化。在日本橋代碼公布的標準是適用于估計土層的厚度。里可以預期或注意到液化后15個震級級至級的范圍地震領(lǐng)域?？p；砂翻滾加上地面振動的影響和通過橫向傳播引起的表面效應。發(fā)的領(lǐng)域，并沒有體現(xiàn)在地面液化第四組。耳其和臺灣發(fā)生在1999年的地震引發(fā)液化和非液化地點完成的現(xiàn)場測試。那些在這項研究中所使用的數(shù)據(jù)被用于按地區(qū)提供了與標準貫入試。2021年的希臘的事件后。震的震級兆瓦分別為，和。年），以更好地估計可能液化損害。在這項研究中，當LL<37和PI<12時，

　　

【正文】 eptibility of the soil layers was evaluated based on the remendations proposed by Seed et al. (2021) and afterwards,the factor of safety and the LPI per borehole were puted using the procedure described in section . However, as much of the city of Larissa is built on fluvial sediments, it was also decided to investigate the influence of the nearsurface geology on the final acceleration value. In order to account for amplification effect due to surface geology, the regression proposed by Stewart et al. (2021) equal to g. The thickness of the non liquefiable cap layer was determined using the criteria followed by Papathanassiou (2021) and described above. The results from the sites were plotted using the parameters of LPI and H as shown in Figure 3. only two sites plotted within the zone of liquefaction manifestation Thus, liquefactioninduced ground surface disruption is expected to be triggered by an earthquake of M = 7 and PGA = g in the vicinity of these two sites. In Figure 4 the map of Larissa is shown, including the sites where SPT borings were conducted. Figure 3. diagram showing the distribution of the data provided by insitu tests in the city of Larissa (solid triangles). Figure 4. Map showing the distribution of boreholes in the city of Larissa and the areas that are clas sified as prone to liquefaction based on the procedure proposed by this study. This result is not in agreement with the surface geologybased evaluation of liquefaction susceptibility at the area of Larissa where fluvial, susceptible to liquefaction, sediments were mapped. However, the low (deep) groundwater table and the dense subsoil layers (SPT 25) are the main parameters that lead to this nonliquefiable behavior and explain the oute of the application of the method proposed by this study. References Bray, ., Sancio, ., Youd, ., Durgunoglu, T., Onalp, A., Cetin, ., Seed, ., Stewart, .,Christensen, C., Baturay, ., Karadayilar, T. amp。 Emrem, C. 2021. Documenting incidents of ground failure resulting from the August 17, 1999 Kocaeli, Turkey Earthquake: Data report characterizing subsurface conditions, PEER (2021) p. 588. Christaras, B., Pavlides, . amp。 Papathanassiou, G. 2021. Liquefactioninduced ground surface study from 2021 Lefkas (Greece) earthquake, International Symposium Geology and Linear Infrastructures, Lyon, France (2021) (in CD). Chu, ., Stewart, ., Lee, S., Tsai, ., Lin, ., Chu, ., Seed, ., Hsu, ., Yu, . amp。 Wang, . 2021. Documentation of soil conditions at liquefaction and nonliquefaction sites from 1999 ChiChi (Taiwan) earthquake. Soil Dynamics and Earthquake Engineering 24: 647–657. Holzer, . (2021). Probabilistic liquefaction hazard mapping. Geotechnical Earthquake Engineering Soil Dynamics IV, GSP 181, ASCE. Ishihara, K. 1985. Stability of natural deposits during earthquakes. Proc. 11th Internatioanl Conference on Soil mechanics and Foundation Engineering, San Fransisco, CA, . Balkema, Rotterdam 1:321–376. ITSAK, 2021. The earthquake of Lefkada and its effects on the built and Natural environment,Open file report (2021), p. 61 (in Greek). Iwasaki, T., Tatsuoka, F., Tokida, K. amp。 Yasuda, S. 1978. A practical method for assessing soil liquefaction potential based on case studies at various sites in Japan. Proc. 2nd International Conference on Microzonation: 885–896. Iwasaki, T., Tokida, K., Tatsuoka, F., Watanabe, S., Yasuda, S. amp。 Sato, H. 1982. Microzonation for soil liquefaction potential using simplified methods. Proceedings of the 13th International Conference on Microzonation, Seattle, USA vol. 3, 1319–1330. Juang, ., Yuan, H., Lee, DerHer. amp。 Ku, . 2021. Assessing CPTbased methods for liquefaction evaluation with emphasis on the cases from the ChiChi, Taiwan, earthquake. Soil Dynamics and Earthquake Engineering 22: 241–258. Maravelakis (1943). Geological and macroseismic study of the devastating earthquake of Larissa, 1st March 1941, p. 27 Papathanassiou, G. 2021. LPIbased approach for calibrating the severity of liquefactioninduced failures and for assessing the probability of liquefaction surface evidence, Engineering Geology. 96:94–104. Seed, . amp。 Idriss, . 1971. Simplified procedure for evaluating soil liquefaction procedure. Journal of Soil Mechanics Foundation Division, ASCE 97 (SM9):1249–1273 Seed, ., Tokimatsu, K., Harder, . amp。 Chung, . 1985. The influence of SPT procedures in soil liquefaction resistance evaluations. Journal of the Geotechnical Engineering Division, ASCE 111(12):1425–1445. Stewart, ., Liu, . amp。 Choi, Y. 2021. Amplification Factors for Spectral Acceleration in Tectonically Active Regions. Bulletin Seismological Society America, 93(1): 332–352。 DOI: Sonmez, H. 2021. Modification to the liquefaction potential index and liquefaction susceptibility mapping for a liquefactionprone area (Inegol– Turkey). Environmental Geology 44 (7):862–871. Sonmez, B., Ulusay, R. amp。 Sonmez, H. 2021. A study in the identification of liquefactioninduced failures on ground surface based on data from the 1999 Kocaeli and ChiChi earthquakes, Engineering geology, 97: 112–125.