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Progress in Volcanology
  • Language: en
  • Pages: 204

Progress in Volcanology

Progress in Volcanology includes nine chapters in three sections. The first section is the “Introduction” while the other two sections speak on “Applied Volcanology” and “Volcanic Sedimentology, Geochemistry and Petrology.” The chapters address volcanology in several areas around the world, including Italy, Indonesia, Ethiopia, Argentina, India, and others.

Hydrogeochemistry of the Pidong Crater Lake, Jos Plateau Volcanic Province, Nigeria
  • Language: en

Hydrogeochemistry of the Pidong Crater Lake, Jos Plateau Volcanic Province, Nigeria

  • Type: Book
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  • Published: 2020
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  • Publisher: Unknown

The occurrence and recurrence of floating ,Äòmat,Äô vegetation around the Pidong Crater Lake and intermittent change in the color of the lake water from natural blue to brown-yellowish color call for a better understanding of the factors controlling these biological and physico-chemical changes. As a result of these changes, a hydrogeochemical monitoring regime was employed where the lake water samples were collected and analyzed on a monthly basis over a period spanning for 3¬†years. The hydrogeochemical results for the lake water when plotted in the piper trilinear diagram display predominantly Mg-Ca-HCO3 type with minor water types of Na-K-HCO3, Na-K-Cl and Na-K-SO4 types (,⧠20%), suggesting a derivation from water-rock interaction processes (hydrolysis). The visible dominance of the alkali earth metals (Mg2+ + Ca2+) over the alkali metals (Na+ + K+) is expected from a basaltic host rock aquifer due to the dissolution of its constituent ferromagnesian minerals and plagioclase respectively. The general depletion of LILE (Ba, Rb, Sr) (1,Äì10 x Chondrite) and that of High Strength Elements (HSE) (Nb-Yb) (0.001 to

The Afar Volcanic Province Within the East African Rift System
  • Language: en
  • Pages: 344

The Afar Volcanic Province Within the East African Rift System

The seismically and volcanically active East African Rift System is an ideal laboratory for continental break-up processes: it encompasses all stages of rift development. Its northernmost sectors within the Afar volcanic province include failed rifts, nascent sea-floor spreading, and youthful passive continental margins associated with one or more mantle plumes. A number of models have been proposed to explain the success and failure of continental rift zones, but there remains no consensus on how strain localizes to achieve rupture of initially 125-250 km-thick plates, or on the interaction between the plates and asthenospheric processes. This collection of papers provides new structural, stratigraphic, geochemical and geophysical data and numerical models needed to resolve fundamental questions concerning continental break-up and mantle plume processes. The focus is on how mantle melt intrudes and is distributed through the plate, and how this magma intrusion process controls along-axis segmentation and facilitates break-up.

Observing the Volcano World
  • Language: en
  • Pages: 771

Observing the Volcano World

  • Type: Book
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  • Published: 2018-07-14
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  • Publisher: Springer

This open access book provides a comprehensive overview of volcanic crisis research, the goal being to establish ways of successfully applying volcanology in practice and to identify areas that need to be addressed for future progress. It shows how volcano crises are managed in practice, and helps to establish best practices. Consequently the book brings together authors from all over the globe who work with volcanoes, ranging from observatory volcanologists, disaster practitioners and government officials to NGO-based and government practitioners to address three key aspects of volcanic crises. First, the book explores the unique nature of volcanic hazards, which makes them a particularly c...

Piezoelectric Actuators
  • Language: en
  • Pages: 186

Piezoelectric Actuators

Taking advantage of high resolution, rapid response, and compact structure, piezoelectric actuators are widely employed for achieving precision positioning in both scientific research and industrial application. With the development of science and technology, the requirements for precision positioning are increasing. Accordingly, great efforts have been made to improve the performances of piezoelectric actuators, and significant progress has been achieved. This book discusses some recent achievements and developments of piezoelectric actuators, in terms of piezoelectric material, driving principle, structural design, modeling, and control, as well as applications.

Estuary
  • Language: en
  • Pages: 127

Estuary

Estuaries are regarded among the most ecologically threatened ecosystems worldwide largely due to poor land use practices within their catchment areas, freshwater abstraction, coastal development, and resource exploitation. Moreover, these systems act as repositories for various anthropogenic contaminants. The establishment and successful implementation of conservation and management strategies are critically dependent on understanding the links among physicochemical, hydrological, and biological variables within these systems. The book provides a comprehensive overview of selected topics including modeling of water exchange between estuaries and the ocean, sediment geochemistry and mangrove health, climate variability and hydrology, and pesticides in estuaries and ecosystem functioning for various estuaries including permanently open, mangrove, and intermittently open/closed systems in both the northern and the southern hemispheres.

Botany
  • Language: en
  • Pages: 120

Botany

This book integrates knowledge of plant biotechnology, plant physiology, and the environment. It presents new information about soil organic carbon sequestration using plant species (tropical grasses) that have potential in climate change mitigation. It also presents scientific knowledge on the multipurpose role of microRNA (miRNA), focusing mainly on stress tolerance in crop plants. Chapters discuss uses, methods, and advantages of recombinant DNA technology and novel plant biotechnology applications for plant-based vaccines. This volume brings together knowledge about non-edible plants seeds as potential sources of biodiesel production to mitigate the global energy crisis.

Kinematics and Dynamics of Lava Flows
  • Language: en
  • Pages: 228

Kinematics and Dynamics of Lava Flows

Manga (earth and planetary science, University of California-Berkeley) and Ventura (Instituto Nazionale di Geofisica e Vulcanologia, Italy) overview of the current understanding of the physical, thermal, and chemical processes governing the flow of lava and report on the latest methods for interpreting prehistoric flows. The collected papers encompass volcanological, petrological, and structural studies using numerical and experimental modeling, field studies, remote sensing, and geographic information systems. There is no subject index. Annotation ©2006 Book News, Inc., Portland, OR (booknews.com).