System Architecture for Earthquake, Tsunami Preparedness and Warning

Humanity is always under the threat of earthquakes. Anatolian peninsula is one of the well-known area which amongst the areas endangered by earthquakes. During the history many dramatic examples have been occurred. In these earthquakes many people either died or have been injured. In addition, lots of damage in this area has been occurred. More west, in the Sea of Marmara, these earthquakes have also initiated Tsunamis which hit the coastline and caused secondary damages. Modern technologies in combination with remotely sensed data in GIS environment open a wide field for assisting in Crisis Management. The most important component of any Crisis Management System is a Crisis Preparedness Plan where especially our disciplines of Photogrammetry, Remote Sensing and Spatial Information Science can contribute in many ways. Crisis Preparedness plays a key role in preventing the population against big disasters. All Crisis Management efforts need an interdisciplinary cooperation to receive a sustainable help for all citizens. In our paper, we aim to highlight the possible contributions of our disciplines by examples of Earthquakeand Tsunami-Risk for Istanbul. Part of the discussed elements are referred to existing applications already installed or under construction around the world, others are taken from own studies in the area of Istanbul. Nowadays Crisis Management System is founded on 3 columns, the Crisis Preparedness Plan, the Early Warning System and the Rescue and Management Action.