No Sugar Tonight... EarthCache
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Rivers around NB… yup we got em, but as time goes on rivers change and sometimes create what is called an Oxbow Lake.
This Earthcache will bring you to an area riddled with not only this particular Oxbow Lake, but to an area which will eventually be riddled with them.
An Oxbow Lake is formed by bank erosion. Specifically, where a Meander exists in the course of a river, over time the river’s velocity will etch out particles from the start of a meander, and deposit them further downstream. This not only forces the meander into a wider angle, but also cuts into the receiving bank where the water first turns.
Over time, this constant river bank erosion at either end of the meander cause the two sides to eventually meet, thus cutting off the original river way and making the river run in more of a straight line as opposed to the curves it had before.
This action cuts off the two ends of the old meander and eventually creates a U-shaped lake which is then called an Oxbow Lake. An Oxbow itself is another name for a meander.
To get to this Earthcache you will need to simply head down the 105 and park around the bridge area, from there it is a short jaunt to the excellent example of an Oxbow Lake which once was a part of the Keswick River. As mentioned, the entire Sugar Island/Keswick region around and on the Saint John River will eventually become a collection of Oxbow Lakes.
Your Mission:
1) Picture of Yourself at the edge of the oxbow as close as you can get to the cords – let me see the oxbow.
2) Estimate the width of the oxbow at this point and email this information to me.
3) A fully formed Oxbow Lake has very little water movement, measure the water movement by dropping a leaf in the water, and if there IS movement, time how long the leaf takes to travel 10 meters, translate this calculation into meters per seconds and email this to me.
Logs without the pic and the answers emailed will be deleted.
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Treasures
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