Geostatistics report

PLEASE USE THE SCREEN SHOTS PROVIDED TO WRITE THE REPORT

MILESTONE ONE

The website below has the completed exercises to follow along and get an understanding of the screenshots.

http://desktop.arcgis.com/en/arcmap/10.3/guide-books/extensions/geostatistical-analyst/introduction-to-the-arcgis-geostatistical-analyst-tutorial.htm

I. Complete tutorial exercises provided by ESRI: COMPLETED

Exercise 1: Creating a surface using default parameters: COMPLETED

Exercise 1 takes you through accessing Geostatistical Analyst and the process of creating a surface of ozone concentration using default parameter values to introduce you to the steps involved in creating an interpolation model. The goal of this exercise is to introduce you to the process of creating surfaces from sample data.

Exercise 2: Exploring your data: COMPLETED

Exercise 2 guides you through the process of exploring your data before you create the surface to spot outliers and recognize trends. Use the ESDA tools to explore data and gather information to build good interpolation models.

II. Write a brief (500–1,000 word) report that includes the following: NEEDED

Exports or screenshots of the following models, graphics, and data you produce during each exercise in the reports:

i. Semivariograms

ii. Scatterplots

iii. Histograms

iv. Voronoi maps

A brief explanation for each image (what the image represents/how it was created)

III. An explanation of what the results of the analysis show

IV. A description of how the models and techniques in this milestone can be transferred to the scenario in the final project.

Specifically, the following critical elements must be addressed in your report:

· Images of the required maps (semivariogram, scatterplot, histogram, and Voronoi map)

· Explanations of each graphic

· Analysis of the results

· Narrative of the intended locations and the possible applications of the Geostatistical Analysist Extension exercises to the final project

MILESTONE TWO

I. Complete tutorial exercises provided by ESRI from the Geostatistical Analyst Tutorial:

Exercise 3: Mapping ozone concentration: COMPLETED

Exercise 3 provides you with the opportunity to improve on the map of ozone concentration created in Exercise 1 and introduces some basic geostatistical concepts. You will again use the ordinary kriging interpolation method and incorporate the trend in your model to create better predictions.

Exercise 4: Comparing models: COMPLETED

Using Geostatistical Analyst, you can compare the results of two mapped surfaces. This allows you to make an informed decision as to which provides more accurate predictions of ozone concentration based on cross-validation statistics.

Exercise 5: Mapping the probability of ozone exceeding a critical threshold: COMPLETED

For this exercise, you will use the indicator kriging technique to map the probability that ozone values exceed the threshold. In Exercises 1 and 3, you used ordinary kriging to map ozone concentration in California using different parameters. In the decision-making process, care must be taken in using a map of predicted ozone for identifying unsafe areas because it is necessary to understand the uncertainty of the predictions.

Important note: You will not complete Exercise 6 in this tutorial.

II. Write a brief (750–1,500 word) report that includes the following: NEEDED

Exports or screenshots of the following models, graphics, and data you produce during each exercise in the reports:

i. Any maps created

ii. Any model used but not covered in Milestone One

A brief explanation for each image (what the image represents/how it was created)

III. An explanation of what the results of the analysis show