Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16795
Depressions and other lake-floor morphologic features in deep water, southern Lake Michigan
The most common features are subcircular depressions, commonly compound, that are irregularly distributed across the lake floor. The depressions are most common in the southern basin of the lake where lacustrine sediments are more than a few meters thick, corresponding to water depths greater than about 90 m. We have divided the depressions into three types on the basis of their internal structure
Authors
Steven M. Colman, D. S. Foster, D.W. Harrison
Modeling transport in transient ground-water flow: An unacknowledged approximation
During unsteady or transient ground-water flow, the fluid mass per unit volume of aquifer changes as the potentiometric head changes, and solute transport is affected by this change in fluid storage. Three widely applied numerical models of two-dimensional transport partially account for the effects of transient flow by removing terms corresponding to the fluid continuity equation from the transpo
Authors
Daniel J. Goode
Mid-Mesozoic (Mid-Jurassic to Early Cretaceous) evolution of the Georges Bank Basin, U.S. North Atlantic outer continental shelf: Sedimentology of the Conoco 145-1 well
The Conoco 145-1 exploratory well, located in the southeastern portion of the Georges Bank Basin, was drilled to a total depth of 4303 m below the sea floor. The oldest sedimentary rocks sampled are of Middle Jurassic age (Late Bathonian-Callovian). A dolomite-limestone-evaporite sequence dominates the section below 3917 m; limestone is the predominant lithology in the intervals of 3271-3774 m, 22
Authors
L. J. Poppe, C. W. Poag, R.W. Stanton
Holocene depocenter migration and sediment accumulation in Delaware Bay: A submerging marginal marine sedimentary basin
The Holocene transgression of the Delaware Bay estuary and adjacent Atlantic coast results from the combined effect of regional crustal subsidence and eustasy. Together, the estuary and ocean coast constitute a small sedimentary basin whose principal depocenter has migrated with the transgression. A millenial time series of isopach and paleogeographic reconstructions for the migrating depocenter o
Authors
C. H. Fletcher, H. J. Knebel, J.C. Kraft
Tide- and wind-driven flushing of Boston Harbor, Massachusetts
The flushing of Boston Harbor, a shallow, tidally dominated embayment with little fresh water input, is investigated using a depth-averaged model. The modeled tidal currents exhibit strong spatial variability and ebb/flood asymmetry due to complex topography and coastline geometry and were verified by shipboard acoustic Doppler current profiler measurements. At the inlets to the harbor, the asymme
Authors
Richard Signell
Mineralogy of the silt fraction in surficial sediments from the United States mid-Atlantic shelf, slope and rise
An analysis of the abundances and distributions of silt-sized heavy minerals from the U.S. mid-Atlantic outer continental shelf, slope, and rise shows that heavy minerals constitute a substantially greater weight percent of the silt fraction than that of the sand fraction regardless of environment and sediment texture. Concentrations of silt-sized heavy minerals progressively decrease from the she
Authors
L. J. Poppe, J.A. Commeau
Salmonid whirling disease
This paper provides the latest scientific and technical advances in the management of salmonid whirling disease caused by the myxosporean Myxobolus cerebralis (Syn. Myxosoma cerebralis). The complete life cycle of the parasite and the biology of the infective agent to fish, the actinosporean Triactinomyxon stage, are reviewed, and suggested procedures for detection, identification, and control of
Authors
M.E. Markiw
Agglutinin response of Atlantic salmon to Aeromonas salmonicida and Yersinia ruckeri
No abstract available at this time
Authors
L.A. Ford, R.C. Cipriano
Use of visible implant tags compared in Atlantic salmon and lake trout
No abstract available at this time
Authors
H. L. Kincaid
In vitro effects of heavy metals on the nonspecific defense mechanisms and immune response of fish
No abstract available at this time
Authors
G. Jeney, D. Anderson, Z. Jeney
Habitat use by a headwater stream fish community in North-central Pennsylvania
No abstract available.
Authors
J. H. Johnson, D. S. Dropkin, P.G. Shaffer