River Basin Erosion Dynamics

Sediment transport path: working hypothesis 1. Begins on hillslope with low 137Cs and 210Pbex concentration 2. Enters agricultural terrace through irrigation diversion or direct transport 3. Sits near surface as it works through terrace network, from tread to riser to next terrace, accumulating 210Pbx the entire time 4. Finally enters main river channel and is exported from basin with higher 210Pbex concentration than it began with 4 3 2

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