VOLKANİK ALANLARDA YAPILACAK ŞEHİR PLANLAMASINDA ÖNCELİK NE OLMALI


Uyanık N. A. , Ekin N., Uyanık O.

5th International GAP MATHEMATICS-ENGINEERING-SCIENCEAND HEALTH SCIENCES Congress, Şanlıurfa, Turkey, 4 - 06 December 2020, pp.1

  • Publication Type: Conference Paper / Summary Text
  • City: Şanlıurfa
  • Country: Turkey
  • Page Numbers: pp.1

Abstract

Since our country is located in the earthquake zone, earthquake should be considered primarily in urban planning and appropriate settlement site selections should be made. As is known, earthquake waves are divided into two as body and surface waves. Body waves are divided into two as P and S waves and surface waves as R and L waves. Of these waves, S and surface waves are destructive waves. Earthquake waves propagate in rock environments with faster, higher frequency and smaller amplitudes. In addition, surface waves are not effective in rock environments. On the other hand, earthquake waves progress slower in areas saturated with water and have low frequency and large amplitudes. In such water-saturated soft fill areas, surface waves are extremely effective and damaging. Under normal conditions, settlement site selection for urban buildings should be made by taking into consideration earthquake waves. However, determination of the natural radioactivity level should be the priority for settlement site selection in volcanic areas that are the subject of this study. A settlement site suitable for earthquake may not be suitable for natural radioactivity. In this case, people in settlements that are not damaged by the earthquake will be damaged by radioactive radiation. Isparta-Çünür region was chosen as the study area in order to reveal this situation. Geologically, there are limestone, trachy-andesite belonging to Gölcük volcano in the region, old and new alluvial units. Süleyman Demirel and Isparta Applied Sciences universities and Çünür district settlement areas are located on and around these units. Approximately forty thousand people live in this region. Both radioactive elements with gamma-ray spectrometer and earthquake waves with multi-sources seismic refraction studies were measured so as to create a map on the geological units roughly specified. As a result of the studies, external hazard index values that reveal the radiological risk were mapped in addition to the propagation velocities of earthquake waves and ground classifications for suitability the settlement. As a result, it was determined that the andesite hill, which is a suitable settlement in terms of earthquake waves, is not suitable in terms of radiological risk. For this reason, this study suggests firstly determining the natural radiological risk, especially for settlement site selection in volcanic areas.