Abstract The North River estuary (Massachusetts, USA) is a tidal marsh creek network where dispersion processes dominate the salt balance. A field study using moorings, shipboard measurements, and drone surveys was conducted to characterize quantify trapping due tributary creeks. During flood tide, saltwater propagates up main channel gets “trapped” in creeks inherit an axial salinity gradient ...

Large-scale marsh restoration efforts were conducted to restore normal salt marsh structure and function to degraded marshes (i.e., former salt hay farms) in the mesohaline lower Delaware Bay. While nekton response has been previously evaluated for the marsh surface and subtidal creeks in these marshes, little effort has been focused on intertidal creeks. Nekton response in intertidal creeks wa...

a sequence of permian rocks crops out in northwest of khur in central alborz, north of iran. this sequence consists of the dorud (asselian-sakmarian), ruteh (artinskian-murgabian) and nesen (early djulfian) formations. the ruteh and nesen formations in alborz range were deposited in a shallow marine environment of the continental margin in the paleo-tethys. the ruteh formation with a thickness ...

This article is focused on definition and identification of optimal ecological flow for macrozoobenthos communities in small urban creeks affected by urban drainage using the Physical HABitat Simulation (PHABSIM) system. It describes the process of determination of ecological flows, from field measurement to determined values. Results show that combine sewer overflows and storm water drains neg...

Using an empirical framework based on the Mussa-Rosen model of monopoly quality choice, we calculate the degree of quality degradation in cable television markets and the impact of regulation on those choices. We find lower bounds of quality degradation ranging from 11 to 45 percent of offered service qualities. Furthermore, cable operators in markets with local regulatory oversight offer signi...

Using neural networks to describe tracer correlations D. J. Lary 2, , M. D. Müller , and H. Y. Mussa Global Modelling and Assimilation Office, NASA Goddard Space Flight Center, USA GEST at the University of Maryland Baltimore County, MD, USA Unilever Cambridge Centre, Department of Chemistry, University of Cambridge, UK National Research Council, Washington DC, USA Received: 8 October 2003 – Ac...

“...capital account liberalization is...similar to the issue of how the human race should make use of fire. Fire warms our homes. It cooks our food, our internal combustion engines. It powers our automobiles and trucks and our turbojets. It powers our airplanes. No doubt, fire is very useful, and we are not going to give up its manifold benefits. On the other hand, fire can also burn you down a...

Surface sediments contamination to heavy metals was evaluated in eight creeks of Mahshahr coastal waters (north-west of the Persian Gulf) from October. 2005 to November 2006. Sediments were collected seasonally by Peterson grab and the concentrations of heavy metals were measured using voltammetry and polarography methods. The range and the mean concentrations obtained in mg/kg were 15.03-35.16...