remote sensing lab, part b patterns of deposition
Post on 21-Dec-2015
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Remote Sensing Lab, Part B
Patterns of Deposition
Background
The purpose of this lab in to develop an understanding of how
fluvial (= river) processes,
wave processes, and
wind
produce
deposits of sediment
Meandering river = fluvial sedimentationLow-energy (slowly flowing) rivers
Deltaflowingrivermeets stillbody ofwater
1. River2. Delta3. Lake4. Delta Front5. Prodelta 6. Distributary
Close-upof distributary
mouth
Delta,continued
Alluvial fan – delta on land
Sand dune – wind sedimentationdeserts and beaches
Sand Bars, Barrier
Islands and Spits
sedimenttransport by
oceanwaves cause
longshore flow
InstructionsFor each five areas:
1. Two images are provided for each area:Image 1: Location of the study area (its right in the middle)Image 2: The study area itself.
Find the study area on Google’s satellite map feature and use it to view the area. Examine it at a variety of zoom levels.
2. Identify the main rivers (if any), their direction of flow, and assess whether the flow is likely high-energy or low-energy. Identify bodies of salt water (if any) and assess whether they are high-energy (that is, subject to ocean waves) or low-energy.
3. Identify what parts of the region are topographically high and topographically low. Both the pattern of rivers and shadows can help.
Instructions, continued
4. Identify deposits of sediment, and describe where they came from and the processes that moved them and caused them to accumulate. Make some inference about the type of sediment (e.g. coarse or fine) based on the energy-level of the environment.
5. Make a full-page sketch of the area. Include rivers, valleys, canyons, ridges, oceans, bays, etc. and a scale in kilometers. Identify the high ground and the low ground.
6. Describe briefly how the sediment deposits have changed (and are changing) with time. Identify specific evidence that supports your ideas.
Area 1: Mississippi River near Greenville
Area 1: Mississippi River near Greenville
Area 2: Mississippi Delta
Area 2: Mississippi Delta
Area 3: Cape Hatteras
Area 3: Cape Hatteras
Area 4: In Nevada
Area 4: In Nevada
Area 5: In Algeria
Area 5: In Algeria