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Modelling the Dispersion of Radionuclides in the Marine Environment

Author: Raúl Periánez

Publisher: Springer Science & Business Media

Published: 2005-03-07

Total Pages: 218

ISBN-13: 9783540248750

This book is a practical guide to the subject of numerical modelling of radioactivity dispersion in the marine environment. Thus, the techniques and numerical procedures required are explained in detail, with the aim of enabling the reader to build a real mathematical model. The book covers basic concepts and techniques, such as solving the advection-diffusion equation in a simple 1D form, as well as the most recent developments (full 3D models for non-conservative radionuclides including chemical reactions and speciation). A chapter is dedicated to the basic hydrodynamic modelling that is always required to simulate the dispersion of tracers in the sea; Eulerian and Lagrangian modelling techniques are also described. A chapter describes sensitivity and uncertainty analysis, the final stage in modelling works. A review on some published radionuclide dispersion models is also included. The book also includes a CD-ROM with a Lagrangian dispersion model of the Strait of Gibraltar and several Fortran codes developed by the author which can be used to reproduce some of the cases described in the book.

Modelling the Dispersion of Radionuclides in the Marine Environment

Author: Raúl Periánez

Publisher: Springer Science & Business Media

Published: 2005-12-28

Total Pages: 199

ISBN-13: 3540273824

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This guide details the techniques and numerical procedures required for numerical modelling of radioactivity dispersion in marine environments. The book goes beyond the basics of hydrodynamic modeling to analyze the latest trends in modeling.

Generic Models for Use in Assessing the Impact of Discharges of Radioactive Substances to the Environment

Author: International Atomic Energy Agency

Publisher:

Published: 2001

Total Pages: 240

ISBN-13:

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Describes an approach for assessing doses to members of the public as part of an environmental impact analysis of predictive radioactive discharges. This is achieved by using screening models which describe environmental processes in mathematical terms, producing a quantitative result.

Impacts of the Fukushima Nuclear Accident on Fish and Fishing Grounds

Author: Kaoru Nakata

Publisher: Springer

Published: 2015-07-10

Total Pages: 233

ISBN-13: 4431555374

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This book presents the results from the Japanese Fisheries Research Agency’s 3-year intensive monitoring of radionuclides in a variety of fish, plankton, benthos, and their living environments after the Fukushima Daiichi Nuclear Power Plant (FNPP) accident in March 2011. The book reveals the dynamics of contamination processes in marine and freshwater fish, mediated by the contamination of water, sediments, and food organisms; it also clarifies the mechanisms by which large variations in the level of contamination occurs among individual fish. Most importantly, the book includes a large amount of original measurement data collected in situ and for the first time assesses diffusion of radiocesium across the Pacific using both in situ data and a numerical simulation model. Also introduced are several new approaches to evaluate the impact of the release of radionuclides, including the measurement of radiation emission from an otolith section to identify the main period of contamination in fish. The FNPP accident represents a rare instance where the environmental radioactivity level was elevated steeply through atmospheric fallout and direct discharge of radioactive water into the sea over a short period of time. Replete with precise scientific data, this book will serve as an important resource for research in fields such as fishery science, oceanography, ecology, and environmentology, and also as a solid basis for protecting fisheries from damage resulting from harmful rumors among the general public.

Radiation Dose Reconstruction for Epidemiologic Uses

Author: National Research Council

Publisher: National Academies Press

Published: 1995-05-16

Total Pages: 150

ISBN-13: 0309176832

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Growing public concern about releases of radiation into the environment has focused attention on the measurement of exposure of people living near nuclear weapons production facilities or in areas affected by accidental releases of radiation. Radiation-Dose Reconstruction for Epidemiologic Uses responds to the need for criteria for dose reconstruction studies, particularly if the doses are to be useful in epidemiology. This book provides specific and practical recommendations for whether, when, and how studies should be conducted, with an emphasis on public participation. Based on the expertise of scientists involved in dozens of dose reconstruction projects, this volume: Provides an overview of the basic requirements and technical aspects of dose reconstruction. Presents lessons to be learned from dose reconstructions after Chernobyl, Three Mile Island, and elsewhere. Explores the potential benefits and limitations of biological markers. Discusses how to establish the "source term"â€"that is, to determine what was released. Explores methods for identifying the environmental pathways by which radiation reaches the body. Offers details on three major categories of dose assessment.

Lagrangian Modeling of the Atmosphere

Author: John Lin

Publisher: John Wiley & Sons

Published: 2013-05-09

Total Pages: 591

ISBN-13: 1118704398

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Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 200. Trajectory-based (“Lagrangian”) atmospheric transport and dispersion modeling has gained in popularity and sophistication over the previous several decades. It is common practice now for researchers around the world to apply Lagrangian models to a wide spectrum of issues. Lagrangian Modeling of the Atmosphere is a comprehensive volume that includes sections on Lagrangian modeling theory, model applications, and tests against observations. Published by the American Geophysical Union as part of the Geophysical Monograph Series. Comprehensive coverage of trajectory-based atmospheric dispersion modeling Important overview of a widely used modeling tool Sections look at modeling theory, application of models, and tests against observations

Modelling Radioactivity in the Environment

Author: E.M. Scott

Publisher: Elsevier

Published: 2003-05-22

Total Pages: 439

ISBN-13: 0080536654

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Just as an environmental model typically will be composed of a number of linked sub-models, representing physical, chemical or biological processes understood to varying degrees, this volume includes a series of linked chapters exemplifying the fundamental nature of environmental radioactivity models in all compartments of the environment. Why is a book on modelling environmental radioactivity necessary? There are many reasons why such a boook is necessary, perhaps the most important that: - modelling is an often misunderstood and maligned activity and this book can provide, to a broad audience, a greater understanding of modelling power but also some of the limitations. - modellers and experimentalists often do not understand and mistrust each other's work yet they are mutually dependent, in the sense that good experimental science can direct good modelling work and vice-versa; we hope that this book can dispel mistrust and engender improved understanding. - there is an increasing reliance on model results in environmental management, yet there is also often misuse and misrepresentation of these results. This book can help to bridge the gap between unrealistic expectations of model power and the realisation of what is possible, practicable and feasible in modelling of environmental radioactivity; and finally, - modelling tools, capacity and power have increased many-fold in a relatively short period of time. Much of this is due to the much-heralded computer revolution, but much is also due to better science. It is useful to consider what gap if any still remains between what is possible and what is necessary.

Inventory of Radioactive Material Resulting from Historical Dumping, Accidents and Losses at Sea

Author: International Atomic Energy Agency

Publisher: IAEA Tecdoc

Published: 2016-02-08

Total Pages: 0

ISBN-13: 9789201090157

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In 1989 the Contracting Parties to the Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter (the London Convention 1972) requested that the IAEA undertake the preparation of a global inventory of radioactive materials entering the marine environment from all origins. The IAEA subsequently established a global inventory which included information officially reported in or obtained from open literature and confirmed by the countries involved, on (i) the dumping at sea of radioactive waste; and (ii) marine accidents and losses involving radioactive materials. The inventory is intended as a centralized information base against which the impact of specific sources of radioactive material entering the marine environment can be assessed and compared. In 2006 the IAEA received the request to update those inventories. The present publication includes additional information provided recently by some IAEA Member States and contracting parties to the London Convention 1972 and Protocol 1996 within a process of updating the inventory which concluded in 2014, together with the information contained in previous IAEA publications. A CD ROM provides tables, maps and a database with detailed information.