Bakosurtanal report the results of the survey team during the 2nd day of December 8, October 9, 2007 and the development of the current situation regarding Kelud activity data based on observations in the post Kelud in Kediri.
Why Kelud is difficult to estimate when it will erupt? Kelud a volcano stratovolcano with a crater lake, crater lake altitude ± 1114 m asl, maximum depth of the lake ± 34 m, area 109,000 m2 ± crater lake and the lake water volume ± 2.5 million m3. The contents of the volume of the crater lake is an obstruction to the discharge of lava or magma and clouds of heat from the inside. Mount Kelud unlike the others, if not remove the cloud will erupt first heat. The symptoms can be observed through the lake temperature, CO2, sulfur gas and colors of existing lakes. Kelud would erupt naturally endogenous energy collected when already large enough so that the natural energy can penetrate or cover material cast. The consequences of a sudden a massive explosion can occur and may cause danger to residents in the vicinity.
Unlike the Mount Merapi in Yogyakarta, which has a lava dome, the magma will come out directly without a hitch with the energy of which is not concentrated in a very big issue in advance and heat clouds or wedus trash. In other words it can be concluded that Kelud will be more dangerous than Mount Merapi.
Kelud current condition data based Kelud post-observation data in Kediri, there has been increased activity in the form of lake water temperature increase from the previous average of 33oC to 37oC even at this time reached 38.5 oC, the CO2 content of 514 tons / day, volcanic earthquake and continuous tremors. Based on these data and then the government set the alert level status, and current residents of a radius of 10 km have been evacuated. Disaster-prone Zone Map Kelud and photographs of the following field conditions also illustrates how the routes that must be passed if the refugees had to flee.
There are 3 levels of Disaster Prone Area eruption of Mount Kelud, are as follows:
1. Disaster-prone Regions I (KRB - I) Potentially affected by rain and possible lava lava eruption, potentially exposed to the rain of ash and can be affected hurl stones (incandescent).
2. Disaster Prone Regions II (KRB II) Potential pounded hot clouds, lava flows, lava eruptions and lava rain, rain pounded thick ash, mud (heat), and hurl stones (incandescent), this benacana prone areas generally uninhabited areas.
3. Disaster Prone Regions III (KRB III) Always hot clouds threatened, toxic gas, lava eruptions and lava flows, threatened burst of incandescent rock and mud.
According to data Satkorlak Kediri and Blitar District, the total population residing in the territory of KRB I and must be in the evacuation of approximately 116,300 people, consisting of as many as 36,200 people Kab Kediri and Blitar as many as 80,100 people.
