Thematic map in ArcGIS and Tableau
Thematic map in ArcGIS and Tableau
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Introduction
Geographic Information System is for the collection, storage, analysis and graphical visualization of spatial data and related information presented in a GIS objects. GIS systems are used in the cadaster, cartography, geology, meteorology, land management, environmental protection, municipal administration, transportation, economy, defense and many other areas. The basis of GIS it is the automated mapping systems, and the main sources of information are different geoimages. Basis for GIS is Map. Today there are many GIS software. One of the most powerful and popular GIS software is ArcGIS. Using this program, we can do analysis of any difficulty.
2. Aims
Creation thematic map of earthquake epicenters of the Kyrgyz Republic in the periods from 1985 to 1994, from 1995 to 2004 and from 2005 to 2014 using programs ArcGIS and Tableau. Also, perform a comparative analysis of the magnitude of earthquakes above-mentioned periods.
3. Data
I used the data downloaded from the website of the Ministry of Emergency Situations of the Kyrgyz Republic. I used the map of seismic zones in polygon format, and epicenters of earthquakes in the point format (http://www.seismo.kg/en/seismic-zoning-map-in-the-kyrgyz-republic).
Points of earthquake epicenters contains data of earthquakes from 200 years ago. For my map it will be too voluminous and I chose the data of epicenter of the earthquake from the last 30 years, 1985 to 2014.
Points of the epicenter of the earthquake contains data about magnitude, the earthquake depth, date and time.
Analysis and creation of thematic maps in Tableau
Tableau one of the most powerful analysis software. I saved my data in the format CSV for work in Tableau then add it. With Tableau I did the analysis the number of earthquake magnitudes in each period.
Conclusion
As a result of the above analysis can be seen that in the three periods there is a high level of earthquake magnitudes from 1995 to 2004, the deepest earthquake and there were more earthquakes also in this period.
Types of classification in ArcGIS
With the help of the ArcGIS software, the types of classification were studied and a map was created.
On this map, you can see the difference in classification types.
