@article{oai:ir.kagoshima-u.ac.jp:00007757,
 author = {上田, 通夫 and UEDA, Michio},
 journal = {鹿児島大学工学部研究報告, The research reports of the Faculty of Engineering, Kagoshima University},
 month = {Nov},
 note = {In the latter half of the 3rd period, which the author feels inclined to characterize as a
overblown time, studies and reports much increased in several branches, geology, disaster science,
civil engineering, soil mechanics and so on. Investigation efforts increased and experiments
were repeated, and analysis became minute and acute.　At the same time, in some cases,
complicated and rather unpractical logics appeared in their opinions. Conception high, meaning
obscure.
In the geological field flow and emplacement mechanism of Ito pyroclastic flow of Aira caldera
is reported and concerning the different pyroclastic flows in the Kokubu area and the neighbouring
zone, some other members as S. Aramaki, R. Ota, and T. Tsuyuki publish their opinions.
Tuffaceous and pumiceous sediments in Kakuto Basin were also investigated by some persons.
Here they suffered from considerably big earthquake disasters of seismic intensity 5-6 in Feb.
1968. Many investigation data were obtained through these events. Formerly we had scarcely
the data of Shirasu behaviour in seismic shock.　These data well revealed a few secrets of
Shirasu nature.
The earthquake damages were found of various types as mountainside slip, crack and settlement
of river banks, sand boiling, and destruction of structures &c. The auther picked up
mainly Shirasu damage reports concerned. Shirasu in this environs is not original but there
are Shirasu like sediments of tuffaceous materials and of Ito pumice flow poured into the past
lake. They are weeker than usual Shirasu and this is the most reason that the damages,
especially that of the mountainside were comparativly large for the seismic intensity. Cut
cliffs were safer to the mountainside.
As for the engineering department, studies on fill-up ground and reclamation works will
become important, for seismic shock influece to disturbed Shirasu material is not made clear
yet.
The auther's rough introduction to the reports of Shirasu studies has now come to an end.},
 pages = {43--60},
 title = {シラスの土質力学的特性とその原因 : シラス防災の研究　第一部　その5},
 volume = {19},
 year = {1977}
}