Abstract
A detailed study had been conducted on the sediment of Mount Samalas’ volcanic eruption in 1257 AD. Using the framework of the reconstruction of the ancient eruption of Mount Samalas, the first step was to map and analyze the deposits of volcanic sediment. Secondly, we analyzed the effect of geomorphology and the distance function to the isopach thickness. The results show that a combination of methods allowed to provide a high resolution map of the distribution of the thickness of the volcanic deposits, both on the slope and in alluvial areas. Geo-electric survey results (both Vertical Electric Sound (VES) and 2D mapping) show consistent changes in the pattern of contrast resistivity layer interface, for all areas. The pattern changes in a row of the top layer, the high resistivity turned into the low. Furthermore, the second and third layer interface changes from low to the high resistivity. High resistivity on the top layer is interpreted as a layer of unconsolidated volcanic sediment. High resistivity values are range from 736 to 2000 Ohm.m on the top layer in the area of the slopes while in the area of alluvial, the resistivity values range from 20 to 958 Ohm.m. Generally, the volcanic deposits in the area of the slopes have a higher value of isopach (>17 m) than in areas of alluvial (<25 m). The geomorphology seemed to have no significant effect on the isopach value, particularly pyroclastic fallout. Such is the case with distance from the source to the site, which is not linear. The value of isopach increases westward from 21 to 31 km, in contrast to the East, which began to occur at a distance of 14 km to 21 km.
Highlights
Many scientists and common people had shown their interests in volcanic mountains since a long time ago, because volcanic areas are prosperous and provide plenty of resources for humans.The researchers were more concerned with the substantial fact that the volcanic eruptions represent humans’ life
The distribution of the of subsurface can be determined by performing the geoelectrical The distribution of resistivity the resistivity of subsurface can be determined by performing the measurements the surface
A layer of volcanic deposits as described above, a layer of pumice in Figure 4, had a resistivity value of 700 Ohm.m, while pumice in Figure 6 reflects the value of resistivity of 180 Ohm.m
Summary
Many scientists and common people had shown their interests in volcanic mountains since a long time ago, because volcanic areas are prosperous and provide plenty of resources for humans. The researchers were more concerned with the substantial fact that the volcanic eruptions represent humans’ life. The science of the activities of a volcanic mountain is being promoted in several aspects, including the evolution and the history of the volcanic system. The evolutional pattern and the volcanic historical system have to be read in a more careful manner. The patterns have to be predicted accurately to reduce the impacts on humans and the surrounding environment.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
