Author: Ryota HinoPublisher: Frontiers Media SA
ISBN: 2889714233
Category : Science
Languages : en
Pages : 271
Book Description
Frontiers in Seafloor Geodesy
Author: Ryota HinoPublisher: Frontiers Media SA
ISBN: 2889714233
Category : Science
Languages : en
Pages : 271
Book Description
Frontiers
Author: Understanding ocean ridges, a new frontier for science and development
Author: Philip WeaverPublisher: Frontiers Media SA
ISBN: 2832527396
Category : Science
Languages : en
Pages : 318
Book Description
Application of Satellite Altimetry in Marine Geodesy and Geophysics
Author: Jinyun GuoPublisher: Frontiers Media SA
ISBN: 2889762505
Category : Science
Languages : en
Pages : 236
Book Description
Sea Frontiers
Author: Volcanic Islands - A Challenge for Volcanology
Author: Alessandro BonfortePublisher: Frontiers Media SA
ISBN: 2889765792
Category : Science
Languages : en
Pages : 224
Book Description
Ocean Resources
Author: D.A. ArdusPublisher: Springer Science & Business Media
ISBN: 9400921314
Category : Science
Languages : en
Pages : 356
Book Description
Today western nations consume annually only a small percentage of their resources from the sea, despite the proclamation of Exclusive Economic Zones (EEZ) by many. In contrast, most Pacific Basin Countries obtain more than a quarter of their annual needs from the ocean. Determination of greater rewards from the development of marine resources is markedly inhibited by the limited technical abilities available to locate and assess them. Knowledge of Exclusive Economic Zone resources is schematic and generalised, and a detailed understanding of the geology and processes relating to the economic use of the seafloor is both fragmentary and very basic. Technology for mapping the mineral resources of continental shelves and ocean areas, except in active offshore hydrocarbon provinces, has been largely developed in pursuit of scientific objectives and competence to rapidly appraise economic potential is limited. Similarly, the capability to characterise and evaluate the other resources of the seas is rudimentary. The development of ocean resources will become increasingly urgent as the growth of the world population and the depletion of land reserves combine to enhance demand. Also, increasing environmental constraints will limit the availability of traditional land-based resources; nevertheless, new offshore development must proceed in a manner whereby the marine environment is not plundered but protected and conserved. The challenge to develop ocean resources with responsible environmental stewardship will require greater leadership than the development of the technologies of exploitation.
Ocean Island Volcanoes: Genesis, Evolution and Impact
Author: Adriano PimentelPublisher: Frontiers Media SA
ISBN: 288963728X
Category :
Languages : en
Pages : 180
Book Description
Ocean island volcanoes constitute some of the most prominent and rapidly-formed features on Earth, and yet they cannot be explained by conventional plate tectonics. Although typically associated with intraplate settings (hotspots), these volcanoes also occur in different geodynamic settings (near mid-ocean ridges). The nature of ocean island magmatism is still the subject of intense debate within the geological community. Traditionally it has been linked to the presence of mantle plumes at depth (e.g. Hawaii), although the interaction with plate tectonics is also recognized to play a significant role (e.g. Azores, Galápagos). Magma compositions may range from basaltic to more differentiated, which consequently is accompanied by striking changes in the eruption style from effusive-dominated to highly explosive volcanism. Understanding how these magmas evolve and how volcanic processes act at ocean island volcanoes are key issues of modern volcanology. Moreover, the growth of ocean island volcanoes from their rise on the seafloor as seamounts, to island emergence and subsequent formation of shield volcanoes (and in some cases large caldera volcanoes) is governed by multiple interrelated changes. It is well known that competing processes model ocean island volcanoes during alternating and/or coeval periods of construction and destruction. The geological evolution of these volcanoes results from the balance among volcanism, intrusions, tectonics, subsidence/uplift, mass wasting, sedimentation, and subaerial and wave erosion. A better knowledge of the interplay between these processes is crucial to obtain a more comprehensive understanding of the evolution of such volcanoes, and to the eventual formulation of a unified model for ocean island evolution. Ocean islands are especially vulnerable to volcanic eruptions and other geological hazards on account of their typical small size, rough topography and isolation, which make risk management and evacuation difficult. Volcanic eruptions, in particular, may have a significant impact on local populations, infrastructures, economy and even on the global climate. It is therefore fundamental to monitor these volcanoes with complementary geophysical, geodetic and geochemical techniques in order to forecast future eruptions and their impacts. However, the assessment of volcanic hazards on ocean islands is challenging due to the large variety of phenomena involved (e.g. lava flows, tephra fallout, pyroclastic density currents, lahars, gas emissions). Different approaches are used to assess volcanic hazards, either based on empirical methods or sophisticated numerical models, focusing on a single phenomenon or the combination of different hazards. This Frontiers Research Topic aims to promote discussion within the scientific community, representing an important step forward in our knowledge of ocean island volcanoes in order to serve as a reference for future research.
The discovery of the unknown planet: The ocean
Author: Paolo FavaliPublisher: Frontiers Media SA
ISBN: 283253029X
Category : Science
Languages : en
Pages : 265
Book Description
Publication - Coast and Geodetic Survey
Author: U.S. Coast and Geodetic SurveyPublisher:
ISBN:
Category : Geodesy
Languages : en
Pages : 316
Book Description