Journal ArticleDOI
Development and reworking of a seasonal flood deposit on the inner continental shelf off the Atchafalaya River
Reads0
Chats0
TLDR
Sediment cores and water column measurements of suspended sediment and flow conditions were taken on the continental shelf off the Atchafalaya River in Louisiana to examine the development and reworking of a seabed flood layer with seasonal variations in river discharge and hydrodynamics as discussed by the authors.About:
This article is published in Continental Shelf Research.The article was published on 2000-12-01. It has received 227 citations till now. The article focuses on the topics: Continental shelf & Discharge.read more
Citations
More filters
Journal ArticleDOI
Hyperpycnal Rivers and Prodeltaic Shelves in the Cretaceous Seaway of North America
TL;DR: In this article, the authors analyzed the Cenomanian Dunvegan Formation and the Turonian Ferron Sandstone Member of the Mancos Shale Formation, in Utah, and showed that they fall within the predicted limits of rivers that are capable of generating hyperpycnal plumes.
Journal ArticleDOI
Environmental signal propagation in sedimentary systems across timescales
TL;DR: In this article, the authors evaluate environmental signal propagation across sediment-routing systems with emphasis on sediment supply, Qs, as the carrier of up-system forcings, and provide a set of conceptual and practical tools for evaluating sediment supply within a source-to-sink context, which can inform interpretations of signals from the sedimentary record.
Journal ArticleDOI
Transport and transformation of dissolved and particulate materials on continental margins influenced by major rivers: benthic boundary layer and seabed processes
TL;DR: Within the benthic boundary layer (BBL) and seabed of river-dominated ocean margins (RiOMars), the timing, kinetics and extent of important biogeochemical processes are greatly influenced by large riverine inputs of dissolved and particulate terrestrial materials.
Journal ArticleDOI
The science of hypoxia in the Northern Gulf of Mexico: a review.
Thomas S. Bianchi,Steven F. DiMarco,Jr H. Cowan,Robert D. Hetland,Piers Chapman,John W. Day,Mead A. Allison +6 more
TL;DR: Why hypoxia in this dynamic river-dominated margin (RiOMar) is not comparable to many of the other traditional estuarine systems is explored, and it is postulate that a better management plan for this region can be reached through a more comprehensive understanding of this RiOMar system.
Journal ArticleDOI
Sources and distribution of terrigenous organic matter delivered by the Atchafalaya River to sediments in the northern Gulf of Mexico
TL;DR: The results of the mixing calculation indicate that terrigenous OM (soil-derived OM and vascular plant debris) accounts for ∼79% of the organic matter (OM) deposited as inshore sediments and 66% of OM deposited as offshore sediments as mentioned in this paper.
References
More filters
Journal ArticleDOI
Analysis of factors controlling soil organic matter levels in Great Plains grasslands
TL;DR: In this article, a model of soil organic matter (SOM) quantity and composition was used to simulate steady-state organic matter levels for 24 grassland locations in the U.S. Great Plains.
Journal ArticleDOI
Sedimentary organic matter preservation: an assessment and speculative synthesis
John I. Hedges,Richard G. Keil +1 more
TL;DR: For example, in a recent paper as discussed by the authors, the authors investigated the mechanisms governing sedimentary organic matter preservation in marine sediments and found that organic preservation in the marine environment is < 0.5% efficient, and that the factors which directly determine preservation vary with depositional regime, but have in common a critical interaction between organic and inorganic materials over locally variable time scales.
Journal ArticleDOI
Carbon and nitrogen determinations of carbonate‐containing solids1
John I. Hedges,Jeffrey H. Stern +1 more
TL;DR: In this paper, two methods for determination of organic carbon, inorganic carbon, and total nitrogen in sediments, sediment trap materials, and plankton are described, using an automated CHN analyzer for all elemental determinations.
Journal ArticleDOI
Direct analysis of 210Pb in sediment samples: Self-absorption corrections
TL;DR: In this paper, a direct γ-ray instrumental analysis of 210Pb in sediment samples is presented, where the dependence of self-absorption on sample composition is solved by making a direct transmission measurement on each sample.
Related Papers (5)
Impacts of Winter Storms on Circulation and Sediment Transport: Atchafalaya-Vermilion Bay Region, Louisiana, U.S.A.
Nan D. Walker,Adele B. Hammack +1 more