scispace - formally typeset
Open AccessBook

Geochemical Processes: Water and Sediment Environments

Reads0
Chats0
TLDR
The approach of this book to geochemistry can be summarized in the question: What happens, and how fast does it happen, when waters, solids, and gases interact in the earth's surface environment? The environment of the earths surface is made of solids and fluids, and the interactions among them are responsible for much of what is taking place in the physical world around us as mentioned in this paper.
Abstract
The approach of this book to geochemistry can be summarized in the question: What happens, and how fast does it happen, when waters, solids, and gases interact in the earths surface environment? The environment of the earths surface is made of solids and fluids, and theinteractions among them are responsible for much of what is taking place in the physical world around us. The dissolved load of natural waters and the materials of which sediments are made are the products of reactions taking place practically everywhere on land, in the atmosphere, and in the hydrosphere. Thus the term water and sediment environments applies effectivelly to much of the surface environment of the earth, including the zone of up to a few kilometers above and below the land and ocean surface. Evolution present itself to us as a more or less complex variety of processes-geological, physical, chemical, and biological. To this end, the inclusive title Geochemical Processes was chosen for the book, to introduce a text that emphasizes processes and time-dependent phenomena.

read more

Citations
More filters
Journal ArticleDOI

Nitrous oxide sources and sinks in coastal aquifers and coupled estuarine receiving waters

TL;DR: Sources and sinks of the atmospherically reactive gas nitrous oxide (N(2)O) were determined in the heavily nutrient loaded Childs River in Cape Cod, MA, and losses from the system to the atmosphere and sediments exceeded inputs of N(2]O contaminated groundwater, which suggests missing N( 2)O sources.
Journal ArticleDOI

Arsenic speciation and turnover in intact organic soil mesocosms during experimental drought and rewetting

TL;DR: In this article, the authors present experiments in which arsenic speciation was determined in peatland mesocosms in high spatiotemporal resolution over 10 months, which included a drought/rewetting treatment, a permanently wet, and a defoliated treatment.
Journal ArticleDOI

Silica cycle in surface sediments of the South Atlantic

TL;DR: In this paper, the authors investigated the regional differences of the biogenic silica flux to the sea floor of the southern South Atlantic and found that the Scotia Sea is not a gap within the Circumpolar Antarctic Opal Belt as previously assumed.
Journal ArticleDOI

Factors that influence methylmercury flux rates from wetland sediments.

TL;DR: MeHg water column concentration in each of the four wetlands was positively correlated with MeHG concentrations present in surface sediment and pore water, and with the calculated sediment-water MeHg flux rate, demonstrating that Hg ethylation is a significant part of the Hg cycle in some aquatic environments.
Journal ArticleDOI

Biogeochemical cycle of nitrogen in a tropical mangrove ecosystem, east coast of India

TL;DR: In this paper, the authors used a box model approach to assess the nitrogen budget in the Sundarban mangrove ecosystem, which acts as a sink for atmospheric nitrogen in terms of NOx, NH3, N2, and water column dissolved inorganic nitrogen.
Related Papers (5)