down-estuary and up-estuary winds, but stratification experiences larger reduction and takes longer to recover under up-estuary winds. In the presence of rotational effects, wind-driven lateral circulations cause the lateral straining of density field and weaken the shear in the along-channel flows. Under the down-estuary winds, a counterclockwise
Rivers, Estuaries, & Deltas - Woods Hole Oceanographic Institution
2019年10月2日 · As sediment builds up along the bottom of an estuary, it begins to form a delta. Continued accumulation of sediment can build land well beyond the mouth of the river. Deltas most often form when the sediment-rich river empties into a protected area, behind a reef, barrier island, seasonal sea ice, or into a small body of water, such as a gulf ...
well-defined subterranean estuary (Waquoit Bay, MA, USA), these two articles will provide an in-depth study of the major biogeochemical reactions operating on the permeable sedi-ments of a coastal aquifer with active Fe and Mn redox cycles and well-defined salinity gradients. 2. STUDY AREA Waquoit Bay is a shallow semi-enclosed estuary located on
Brackish Water: Where Fresh Water Rivers Meet A Salt Water Sea
2019年9月16日 · Slowly, the estuary grows muddier and muddier, shallower and shallower. Occasionally a major flood will push the salt right out of the estuary, carrying the muddy sediment along with it. Sediment cores in the Hudson River indicate that sediment may accumulate for 10, 20, or even 50 years, laying down layers every year like tree rings.
estuary coupled with low salinity (derived from very large freshwater discharge) prevent any large transformation of organic matter within the Ganges-Brahmaputra estuary. Second, we show that human activities can impact the nature of organic matter exported by even the largest rivers on earth. What is the significance of this research for society?
estuary David K. Ralston,1 W. Rockwell Geyer,1 and James A. Lerczak2 Received 14 September 2009; revised 14 December 2009; accepted 30 December 2009; published 9 June 2010. [1] The tidally varying circulation, stratification, and salt flux mechanisms are investigated in a shallow salt wedge estuary where fluvial and tidal velocities are large and
On (and Below) the Waterfront - Woods Hole Oceanographic …
2018年11月5日 · The width of the estuary suddenly expands, and the ebbing freshwater layer at the surface spreads out into a thin, widening plume atop the sea surface. This expanding freshwater layer lifts up and over the saltier water below. As the ebb tide rapidly flushes fresh water out of the estuary, this saltier water often remains nearly stationary.
in the lower ETM remained up-estuary (Geyer et al. 2001; Woodruff et al. 2001). During the moderate freshet of 2001, sediment flux in the lower ETM was down-estuary at maximum discharge and then turned up-estuary during lower discharge summer months (Traykovski et al. 2004). The goal of this work is to quantify the effects of
within a subterranean estuary in the northeastern United States. The first is an intact phospholipid (Fig. 1: IV), which is a membrane-bound lipid that degrades rapidly upon cell death (Boumann et al., 2006; Jaeschke et al., 2009a; Brandsma et al., 2011). The second class of ladderanes, which we refer to as ladderane fatty acids
The Caloosahatchee River estuary is the conduit for one of the four largest river discharges along the west coast of Florida. It is bounded by San Carlos Bay and the Gulf of Mexico to the west and the Franklin Lock/Dam (S-79) to the east, a length of approximately 50 km (Fig. 1). Within the estuary, the tidal range is on the order of 40 cm.