Texas General Land Office
Texas Automated Buoy System
Buoy W Real Time Analysis
Geochemical and Environmental Research Group

This is an experimental product originally implemented by Dr. Les Bender. Any questions or suggestions should be directed to Dr. Norman Guinasso at guinasso@tamu.edu
All information contained within reflect data collected prior to the time of issuance,2014-04-04.
An explanation of the product is being developed. As it becomes available it will be found at the bottom of this page.

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Analysis Products  Current Vector

Current Stick Plot
1-day 2-day 4-day 7-day 14-day 30-day
Current Decomposition
1-day 2-day 4-day 7-day 14-day 30-day
Rotary Spectra
Spectral Forecast Model
Reversal Probability
Scatter Plot
Current Rose
1-day 2-day 4-day 7-day 14-day 30-day
Alongcoast Variability
Water Temperature
QC'd Data Return
Data Download

Signal Strength
Ping Count
Battery Voltage
QC'd Data Return

About this product:

This graph is called a stick plot. Each "stick" (also called a vector) contains three pieces of information: direction, magnitude and time of occurrence.

Direction: Each stick is pointing in the compass direction the current is going "to." A stick pointing to the upper right of the page is pointing northeast; a stick pointing to the bottom of the page is pointing south.

Magnitude: The length of each stick gives the magnitude of the current. The graduated vertical lines on the left side of the graph are scales that can be used to estimate speed in cm/sec. The key is to rotate the scale into the orientation of the stick or the stick into the orientation of the scale.

Time: All of the graphs on the page share the same time axis which is located on the bottom of each graph. The time step of the data is half-hourly. As you move from left to right along the time axis, you are moving forward in time. Time is always given in UTC (Universal Coordinated Time).

Data that have passed quality control standards are plotted in blue. Interpolated data are plotted as red sticks.

When there are gaps of no more than 90 minutes, the missing data is linearly interpolated across the gap. When the gap is longer than 90 minutes but less than two days, the missing data is interpolated with a spectral procedure based on the Lomb periodogram that was developed in house.

The first plot shows the quality controled data without any filtering. The second plot shows the three-hour filtered data which eliminates much of the noise. The third plot shows the 40-hr filtered data which is intended to show the long-term flow.