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This report reviews examples of technical support for air-borne survey conducted by Disaster Prevention Research Institute, Kyoto University, by using unmanned aerial vehicles (drones). Advantages available via the support are also described in aspects of handling, planning, and compliance for flying in the safety-first operation.

Impact resistant test of glazing was carried out by using a newly developed air-cannon, that is a missile-propulsion device. Resistant and failure characteristics of laminated glass were investigated by roof tile missile. A series of tests was carried out by varying the impact speed, the kind of roof tile, the impact location of roof tile and the location of the glass where impacted. The results were compared with the specification of ISO16932 and the reference missile for the standard impact test in Japan was proposed.

Seismicity around the Hakone volcano was activated just after the arrival of surface waves caused by the 2011 off the Pacific coast of Tohoku Earthquake. Most of these triggered earthquakes had similar distribution to prior occasional swarm activities. In order to image electrical properties around such seismic events, we carried out audio-frequency magnetotelluric (AMT) measurements at 39 sites in December 2011. As the result of remote-reference processing using local sites, we obtained fair sounding curves at most sites for frequencies higher than 1Hz. The spatial distribution of the induction vectors and the phase tensor ellipses suggests that conductive bodies may lie beneath the remarkable regions in which the seismicity increased abruptly just after the occurrence of the Tohoku Earthquake.

Impact resistant test of glazing was carried out based on ISO 16932. An air-cannon, that is a missile-propulsion device, for the impact resistant test of cladding against windborne debris was manufactured. A series of tests of various kinds of glasses was carried out to investigate the performance of impact resistant and the characteristics of failure. The performance of sheet glasses, such as float, tempered, wired, laminated and filmed glasses was evaluated by the specification of ISO16932.

We installed 45 temporary seismic observation stations in the middle and northern Kinki district, where active faults are concentrated. The seismometers and data loggers used are newly developed. We perform the dense observation for about four years and analyze the data together with those of permanent stations to detect heterogeneous structures related to the strain accumulation process. The purpose of the project is to clarify the relation between the strain accumulation and the earthquake generation. In this report, we described about the observation system, the data processing system, and the database system for this project.

We manufactured an air-cannon, that is a missile-propulsion device, for the impact resistant test of cladding against windborne debris. The air-cannon consists of a compressed-air supply, pressure control and release valves, a barrel, a support frame and a speed-measuring system. Sets of photoelectric sensors mounted on the barrel are used for measuring the speed of the missile. The cannon is capable of propelling a missile at a specified speed and orientation towards a specified impact location. We calibrated the speed measuring system by a high-speed video camera. The fastest speed was 75m/s for a 3kg lumber. Tolerances for the measured impact speed were satisfied the specification of ISO16932.

In order to make clear (1) basement structure of Aira caldera, (2) magma supply system of magma reservoirs beneath Aira caldera and Minamidake crater and volcanic conduit and (3) magma path from the magma reservoir beneath the Aira caldera to that beneath the Minamidake, seismic exploration using artificial sources was conducted at Sakurajima volcano and Aira caldera, southwest Japan in November 2008. A total of 646 temporal stations equipped with a 2 Hz or 4.5 Hz vertical component seismometer and a portable data logger were deployed at land area. Sea area was covered by 32 Ocean Bottom Seismometers. Dynamite shots with charges of 20-300 kg were detonated at 15 locations.

Underground structures in the Kinki district were surveyed from 2002 to 2006 under the Special Project for Earthquake Disaster Mitigation in Urban Areas. We carried out seismic observations with deploying 35 temporary stations across the Kinki district from the Pacific side to the Japan Sea side, in order to reveal subsurface structures, such as subducting Philippine Sea slab in southern Kinki and the continental Moho in northern Kinki. About 50, 000 event data were selected from continuously observed seismic records of both the temporary stations and nearby permanent stations during May, 2005 and Nov, 2006. We also try to develop a data communication system with a mobile telephone for a BREW application to improve the observation system.

We had many strong wind disasters caused by typhoon, tornados and down bursts in 2006. Typhoon 0613 in September struck Yaeyama Islands, Japan, and significant damage to buildings and houses occurred. In Kyusyu, there was many damage to houses and buildings especially in Nagasaki, Saga and Hukuoka prefectures. This typhoon also brought a number of strong winds and a tornado that struck Nobeoka city in Myazaki prefectures. Three persons were dead and a train was derailed. This paper focuses on the characteristics of the damage to buildings and houses caused by strong wind of Typhoon 0613 and examined effective measures from the viewpoint of preventing and mitigating these disasters. To prevent the claddings and openings from the flying missiles is important to reduce the strong wind damage. The shutters and the wind resistant glasses are effective. To decrease the number of missile is also essential. The damage caused by lightweight houses is notable in urban area.

Disaster Prevention Research Institute (DPRI), Kyoto University has conducted surveys of underground structure in the Kinki district under the Special Project for Earthquake Disaster Mitigation in Urban Areas since 2002. We carried out observations of earthquakes Kinki since 2004 deploying 28 observation stations along a control-sourced seismic survey line from Shingu City, Wakayama Prefecture to Kyoutango City, Kyoto Prefecture. This observation system worked well for obtaining high quality earthquake records with high sensitivity. In this report we describe the improvement of observation systems and the measures against snow.