HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (10) Citing Articles via Google Scholar Google Scholar Articles by Matisoff, G. Articles by Whiting, P. J. Search for Related Content PubMed PubMed Citation Articles by Matisoff, G. Articles by Whiting, P. J. GeoRef GeoRef Citation Agricola Articles by Matisoff, G. Articles by Whiting, P. J. Related Collections Soil Conservation Tillage Watershed and Landscape Processes Soil Methods/Instrumentation Soil Erosion

Radionuclides as Indicators of Sediment Transport in Agricultural Watersheds that Drain to Lake Erie

Department of Geological Sciences, Case Western Reserve University, Cleveland, OH 44106

View larger version (27K): [in a new window]   Fig. 1. Sample collection locations in the Rock Creek (RC) watershed. Storm runoff was sampled at 12 locations (Sites A-3 though A-11, TA-2, and B-1 through B-3) in the watershed. The A stations were located along the main drainage channel, and TA-2 was located on a tributary to the main channel that enters the creek just downstream from A-11. The B stations were located on the main channel downstream of tributary TA-2.

View larger version (19K): [in a new window]   Fig. 2. Runoff hydrographs at Old Woman Creek (OWC). The top figure (A) illustrates the difference between the hydrographs at Site C (tilled) and Site F (no-till), which are located in similar subbasin positions in the watershed. The lower figure (B) illustrates the progression in time of the hydrograph as the kinematic wave translates downstream 10 km from Site C to Site G.

View larger version (13K): [in a new window]   Fig. 3. Sedigraphs and hydrographs for sites in the Rock Creek (RC) watershed. The scale for discharge at Station A-11 is three times larger than at the other stations.

View larger version (22K): [in a new window]   Fig. 4. Sedigraphs and hydrographs at Sites C and F in the Old Woman Creek (OWC) watershed.

View larger version (19K): [in a new window]   Fig. 5. The 210Pb (A) and 7Be (B) activities in the suspended sediment as a function of suspended sediment concentrations.

View larger version (20K): [in a new window]   Fig. 6. The 210Pb and 7Be activities in suspended sediments from Rock Creek (RC) and from conventionally tilled and no-till subbasins at Old Woman Creek (OWC).

View larger version (18K): [in a new window]   Fig. 7. Suspended sediment concentrations along the length of Old Woman Creek (OWC) during and after the rainfall event.

View larger version (21K): [in a new window]   Fig. 8. The radionuclide signature of the sediment slug (identified in Fig. 7) as it moved downstream.

View larger version (15K): [in a new window]   Fig. 9. Exponential decrease of 7Be in suspended sediments at various times after passage of the sediment slug and the transport distances calculated from Eq. [3].

View larger version (27K): [in a new window]   Fig. 10. Probability distributions of suspended sediment transport distance at Sites B, C, D, and G.