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California State University, Long Beach
CSULB Geospatial Research and Mapping (GRAM) Field Program
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July 5th

Posted on July 10, 2012 by Courtney

I spent the first part of the day in the Geology lab. At this point, I have combined tables to link the GPS coordinates with the temperature and conductivity data. I have also removed data that we think may be inaccurate because if it is below a certain level we see there is a chance that the Loggers were just coming out of the water. After that, I mapped the temperature and conductivity data along the coast. I have also created scatter plots to show the relationship between the level and the temperature, and also the level and the conductivity data. I have also created scatter plots to show the relationship between temperature and conductivity. After organizing data from the outriggers, the boat ride, and the various bays where we collected data, I have decided to focus on data from the boat ride for my presentation. The reason for this is that the boat traveled a relatively long distance and we were able to keep an eye on the Loggers to check that they were in the proper positioning on the boat.

I went to lunch and returned to the geography lab where I began working on creating histograms using the conductivity data. Paul helped me to create the histograms. T returned to the Geology lab for Dr. Becker’s assistance interpreting the data. We decided to normalize the data with the following equation: (maximum conductivity-actual conductivity)/ (maximum conductivity-minimum conductivity). We then created another histogram. We experimented with different boundaries for our bins to see if we could create a normal distribution. We took the log of the normalized conductivity and created another histogram. After creating the histogram, we went back to the data in our maps.

I created another field in the attribute table to show the change in conductivity. Because we decided that we were looking at log normal data, we used a geometric classification to display conductivity change. We looked through a lot of data trying to find where we might find good areas to search for groundwater. I wish there was more time to continue looking into the data.

The work that I did would not have been possible without the help of Dr. Becker and Wes. I learned a lot of different ways to look at and analyze data and I’m very grateful to them for all their help!!!


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