1]), we must first estimate the area of the seepage face
at the head of Waquoit Bay, The length of the seepage face
(1760 m) was obtained from a false-color aerial infrared image (1-m resolution) taken at low tide in the fall of 2002 (Charette, unpubl, data).
The maximum flow from the alluvial seepage face
into the in-pit trenches and sumps was about 100 g/min (380 litres/min).
We also measured N concentrations at the seepage face of the Edgartown Great Pond estuary which lies roughly 500-1000 m downgradient in the groundwater flowpath from the forest.
We collected throughfall, and water from the vadose zone, aquifer, and seepage face from June 2000 to August 2001 and analyzed samples for [NH.
DON was the principal component of dissolved N in the vadose zone, aquifer, and at the seepage face (Table 1).
4] concentrations were higher in the aquifer and the seepage face compared with the vadose zone, but these differences were not significant and suggest that little additional [NH.
3]), dissolved organic nitrogen (DON), and boron in both vertical and horizontal profiles near the sandy seepage face of Edgartown Great Pond (Martha's Vineyard, Massachusetts).
lD, E, F) along the top transect shown in Figure 1 (A, B, C) suggest how groundwater flow interacts with horizontal transportation to determine the small-scale patterns of concentration across the seepage face of this estuary (Fig.
3] concentrations if we simply had freshwater continually flowing toward the seepage face.
5[per thousand]) at the seepage face
of the aquifer.
In the areas where this occurs or where high-nitrate water moves out in seepage faces
, deeply rooted trees in Zone 1 or in seepage areas are essential.