GEOL 1425 1ST Edition Lecture 21 Outline of Last Lecture I. About stream transportII. Stream, valleys, channels, floodplainsIII. Channel patternsIV. Drainage networksOutline of Current Lecture I. How stream waters flow and transport sediment,II. For the testCurrent Lecture—Stream Transport 2We looked at river valleys, different stages of development, the energies of these environments and how particles in streams causes erosion. We saw massive boulders in streams and we’ll today talk about a river’s capacity and competence.I. How stream waters flow and transport sedimenta. Laminar flow and turbulent flow. Water tends to have same viscosity all over Earth- viscosity tends to be constant in natural streams. Laminar flow- simplest flow, usually in direct straight line under gravity and downhill. Turbulent flow- higher velocity and friction involved. b. Turbulent flow- common conditions for streamsc. Suspended load- how most stuff is carried in suspension. Usually small stuff in most rivers that can remain suspended in the stream and not fall out of water column under gravityd. Bed load- stuff on the bottom of the streamThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.e. Mississippi river looks brown because of the heavy load of particles it carriesf. Settling velocity depends on size of material and velocity and turbulence of water. g. Clay particles often travel stuck together, acting as larger particles than individualclay fragmentsh. Cohesion- clay particles sticking together, water to water adhesion of clay to clayII. For the test:Make sure to look over the slides—where the majority of the test questions will be coming from! The study guide will have an overview of what to expect on the test and solutions to the key words he gave us during
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