VAST Challenge 2018: Suspense at the Wildlife Preserve
Visualizations and Insights
Chemical Trends
| Patterns |
Visualization |
| 1. General Pattern across the Years
An overview of the water sensor readings across the years will give us a starting point and rough idea of how the waterways are faring.
Figure 1.1A shows the average water sensor reading values by year of all the measures and locations. Immediately the Iron content of the water in the year 2003 becomes apparent having the highest value among all the measures throughout the years. By excluding this record, figure 1.1B zooms into the rest of the measures, showing Total Coliforms, Total Dissolved Salts, Bicarbonates, and Total Hardness as having the next top values after Iron.
Next, in figure 1.1C, the water sensor readings are divided by location. The values of the measures form patterns that can be observed throughout all the locations:
(1) Consistently Present
Measures such as those of Amonium and Nitrites are consistently present throughout the years in all the locations. Values may vary with different measures across time but the measures seem to always be present in the readings.
(2) Cyclical
Measures such as those of Water Temperature and Dissolved Oxygen form a cyclical pattern. Values of the measures have a recurring increase and decrease across time.
(3) Present for a certain period of time
Measures such as those of Alachor and Aldrin are observed to be only present in a period of time or in certain location. Measures of these pattern may hint at contamination that will be further examined.
(4) Rarely observed
Measures such as those of Naphthalene and PAHS are rarely observed. Only a few instances were recorded by the water sensors. Measures of this pattern may still hint at a possible contamination though with such little data, it would be difficult to prove otherwise.
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2. Measure Insight - Aluminum Contamination
Water sensor readings have shown Aluminum to be present in 2008-2010 in 2 of the waterways: from Busarakha, Chai, to Kannika and from Somchair to Sakda. In all 5 of the locations, Aluminum value rose to over 400 ug/l in the month of April 2009. Aluminum values were observed to be the greatest in April 17, 18, and 25, all within the span of a week and occurring on the same day for pairs of the locations. |
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| 3. Measure Insight - Total Chlorodine and Hardness Groups
Total Hardness and Chlorodinine have been observed to have very distinct group of values before and after a certain period across the locations in the waterway.
Total Hardness is shown to have a pattern of:
(1) Average values (before 2010)
(2) Period of missing or low values (2010-2014)
(3) Higher values (2014 onwards)
Total Chlorodinine is shown to have a pattern of:
(1) Higher values (before 2016)
(2) Lower values (2016 onward)
Such consistent trends merit interest and are possible for further investigation as to the change in general average of the measures/properties of water.
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VAST Challenge 2018: Suspense at the Wildlife Preserve
