7.07.03 Faultlines

Wed, 11/21/2007 - 12:13

    Disclaimer
    The objective of this tutorial is to get familiar with the GIS software. The tutorial only covers some parts that are being done In a real analysis. The results that are being displayed in the tutorial can’t be compared with the results a real analysis would generate.

    Introduction

    The Output map of this tutorial is a map showing all the faultlines with a 250 meter buffer zone. The area within this buffer zone is considered not suitable for future urban development. This layer will be useful when you are making your hazards analysis later on.

    All map layers are presumed to have been digitized, projected and georeferenced before proceeding to this tutorial.

1 Getting started

1.1 Open ArcMap, select a new empty map. You will now save the map file. Click on File>Save as… in the menu bar. Browse to the folder C:\CLUP_EXERCISE_DATA\06_Workfolder and type ‘Educational_v1.mxd’. Click Save/OK.
1.2 Click on the add data button and browse to C:\ CLUP_EXERCISE_DATA\00_BM and select the file.

barangays_bndry

Lake

municipal_bndry

Rivers

Roads

Click OK.

Click on the add data button and browse to C:\ CLUP_EXERCISE_DATA\03_EN and select the file.

EN05_Fault

Click OK. (See image below.)

2 Where to find the Buffer Wizard

2.1In the menu bar click Tools> Customize> Commands >Tools

2.2 Click and drag on the Buffer Wizard icon. Drop it in the Tool bar

3 Buffering

The layer that contains the fault lines has already been digitized and georeferenced. The only thing left to do is to make a 250 meter buffer surrounding the fault lines.

3.1 Open the Buffer Wizard >The features of a layer.
3.2 The selected layer is Faultlines
3.3 Press the next button.

3.4 Set the distance units to meters
3.5 Set the distance to 250 meters in the bullet “At a specified distance”
3.6 Press the next button.

3.7 In the “buffer output type” mark yes to the question “Dissolve barriers between”.
3.8 In the bullet “specify output shapefile or feature class” as C:\CLUP_EXERCISE_DATA\03_EN\ 250m_Buffer_of_EN05_Fault
3.9 Press the Finish button

The layer that you just created containing the 250 meter buffer of the faultlines is going to be used when you make the geohazards layer.

Ver 1.0


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