In this study, we propose a spatial probabilistic hazard analysis (PSHA) with spatial correlation and correction based on earthquake observation records. To model the spatial correlation of the ground motion, we estimate spatial correlation statistically using observation dataset in the target area. And, we apply it to a PSHA in conjunction with spatial interpolation of ground motion using the simple kriging method for the correction based on the observation. In a trial application for Kanagawa prefecture, seismic hazard curve for area was calculated to discuss the contribution of this method to regional disaster prevention planning.

It is pointed out that both risk colltrol and risk financing are needed to reduce the seismic risk ． Since an earthquake insurance ， which is the most popular measure ， is limited from the viewpoint Qf its market size ， focused are the other measures that are called alternative risk transfers ( hereinafter called ARTs ) ． In many cases ARTs employ full parametrjc trigger to evaluate compensation ， so that basis risk occurs as the difference between the real loss and the compensation ， causing the higher risk cost ． In this paper ， the schematic design method tG determine the parametric trigger that was characterized by several grids and forfeiture functions are proposed ． A model portfolio consisting of 10 buildiqgs was applied in analyzing the performance of the method ． Through the application ， the following findillgs were obtained ； the existing method has a roorn for improvement ， the proposed method can reduce the basis risk corresponding to the surplus compensatiQn and the risk cost can be reduced without increasing

to imprQve the accuracy of rlsk analysis ． authors propose a seismic hazard analysis method u §由 g two gr〔｝und motion intens ． ity measures ；peak ground acceleration (PGA)and peak ground velocity (PGV) ． Sinco the seismic hazard is expressed by the joint probability 〔 ｝fexceedance fbr given PGA and PG-it is necessary to evalua1e a correlation between these intensity measures ． Recently large amounts ofearthquake observation data have been utilized by K −NET and KiK −net databases ， so tha 【the above correlation can be calcu 且 ated ． In lhis paper ， the correlation in the Kanto district is evaluated ， and is applied to seven reference Sites ， fblbwed l)y the conclusion that N 〔 ｝ rth −Kanto area and Sou 山 一 Kanto area possess different seismic hazard ln the aspec1s ofthe shape ofhazard plane， and the inclusion ofdependency of correlation on seismic magnitude or on the focal distance has a large effect on the hazard estlmation ， Keywords ' Probab ゴ ' istic seismic hax硼 ' d'ana ！ ysis ， Groundmotion intens め！ C ') nre ' ation ， κ 一 NE T， KiK −net

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