Sunday, June 10, 2012

Day #5 Another Day of Waves


Friday, June 8, 2012

 I enjoyed another beautiful bike ride to the flume this morning! I could really get used to biking to work everyday; it is a great way to start the day. At the flume, we started wave runs this morning at 9:30 am after some instrument tweaking from yesterday. We will be doing seven waves runs today total, with five being irregular waves runs in sets of 30 minutes, and one 5 minute long run of monochromatic waves, and 5 minutes of long run of bichromatic waves. I just learned the terms monochromatic and bichromatic waves today. With monochromatic waves each wave has the same height and length (shape), while with bichromatic waves there are two different shaped waves that are repeated over and over again. Below is just another picture of waves from first thing this morning at the flume.



 Just like yesterday, in between each wave run we must climb down the ladder into the flume to take the measurements of our instruments at all three stations, and determine whether we must adjust the height of each instrument depending on whether we observe beach erosion or accretion (which is the opposite of erosion, the process of new layers being slowly added). I, again have the important job of being the log recorder of the measurements, adjustments, and other general observations for each run. As with all science experiments, it is critical to make careful observations, and adjustments and make sure that each are recorded. The picture below with Dr. Jack Puleo and Dr. Diane Foster shows an example of what some of the instruments may look like after a run before we adjust them. If you look at the long instrument that is touching the sand next to Dr. Jack Puleo's (in the yellow hard hat) foot, this is just one example of how we are clearly going to need to make an adjustment by raising the instrument up so that it will be just above the sand.


The picture below shows Dr. Diane Foster, Dr. Jack Puleo, and Thijs Lanckriet raising an instrument ever so slightly at one of our stations.


This is a lot of work! Not only do we need to raise instruments that are attached to the metal bars that you see above, but we also need to dig out instruments in the sand to adjust their height relative to the sand level due to erosion or accretion of the sand on the beach. Below shows a picture of both Dr. Jack Puleo and Thijs Lanckcriet adjusting instruments called CCP's in the sand.


So, as you can see from the pictures we have a lot of different instruments in the flume measuring different factors that effect beach erosion. All of those instruments are hooked up to computers to collect data that will be analyzed by each of the researchers. Below is a picture of Dr. Charlie Thompson, and Hachem Kassem showing me the data that is being generated by their offshore instruments that they will need to analyze. Wow, this data being produced can look intimidating, but Charlie is doing a great job of explaining to me what the computer is showing her about the ripple movement in the water. She is a great teacher!


I had a Skype distance learning experience with 7th graders on the Fushion team at Oyster River Middle School in Durham, New Hampshire in the United States with Diane's Ipad. We were running short wave runs when we were talking, so they only got to see a few waves, and then they were in and out of the flume with us while we were measuring our instruments, and checking to see if they needed to be adjusted between the sets. They had a roller coaster of a ride. Below is a picture of Dr. Diane Foster and me with the Ipad talking to the students in the flume.



So, I posted a video below of the monochromatic wave sets the students missed during their fire drill that happened in the middle of our Skype session.

video







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