23,837 research outputs found
Insights from a NOAA Sea Grant network project
No full textSea Grant programs around the nation have been helping coastal communities respond to the effects of a changing climate. This publication documents the results of projects in eight states, led by Oregon Sea Grant, that used a risk-communication framework to provide that community assistanceThis archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Title from coverIncludes bibliographical referencesSponsored by the National Oceanic and Atmospheric Administration's National Sea Grant College Program, U.S. Department of Commerce, and by appropriations made by the Oregon State Legislature NA06OAR4170010 NA10OAR4170059 NA07OAR4310408 NA09OAR4310152 M/A-21 A/ESG-7 R/CC-14Mode of access: Internet from the Oregon Government Publications Collection.Text in Englis
Results of a National Sea Grant survey
No full textThis report presents the findings from a national climate-change adaptation survey conducted by eight Sea Grant programs across the U.S. (Connecticut, Hawaii, Illinois-Indiana, Louisiana, Maryland, Minnesota, Oregon, and Washington). The survey was developed to understand the opinions, current phase of planning, and information needs of coastal/resource professionals and elected officials regarding climate change and adaptation to it. Results from the survey indicate that most coastal/resource professionals seem to believe climate change is occurring in their area. Flooding and shoreline change are important topics to most of the participant programs, and lack of agreement over climate-change effects is a hurdle encountered by many participants. Participating programs are using the survey results to assist communities with adaptationThis archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Title from coverIncludes bibliographical references (page 13)Sponsored by the National Oceanic and Atmospheric Administration's National Sea Grant College Program, U.S. Department of Commerce, and by appropriations made by the Oregon State Legislature NA10OAR4170059 M/A-21 R/SD-15Mode of access: Internet from the Oregon Government Publications Collection.Text in Englis
Seismic data reveal eastern Black Sea Basin structure
No full textRifted continental margins are formed by progressive extension of the lithosphere. The development of these margins plays an integral role in the plate tectonic cycle, and an understanding of the extensional process underpins much hydrocarbon exploration. A key issue is whether the lithosphere extends uniformly, or whether extension varies\ud
with depth. Crustal extension may be determined using seismic techniques. Lithospheric extension may be inferred from the waterloaded subsidence history, determined from\ud
the pattern of sedimentation during and after rifting. Unfortunately, however, many rifted margins are sediment-starved, so the subsidence history is poorly known.\ud
To test whether extension varies between the crust and the mantle, a major seismic experiment was conducted in February–March 2005 in the eastern Black Sea Basin (Figure 1), a deep basin where the subsidence history is recorded\ud
by a thick, post-rift sedimentary sequence. The seismic data from the experiment indicate the presence of a thick, low-velocity zone, possibly representing overpressured sediments. They also indicate that the basement and\ud
Moho in the center of the basin are both several kilometers shallower than previously inferred. These initial observations may have considerable impact on thermal models of the petroleum system in the basin. Understanding\ud
the thermal history of potential source rocks is key to reducing hydrocarbon exploration risk. The experiment, which involved collaboration between university groups in the United Kingdom, Ireland, and Turkey, and BP and\ud
Turkish Petroleum (TPAO), formed part of a larger project that also is using deep seismic reflection and other geophysical data held by the industry partners to determine the subsidence history and hence the strain evolution of\ud
the basin
Is sea-basing a viable method of providing logistic support to the UK amphibious force?
No full textMaritime power has traditionally been a central part of the UK’s defence planning and is well
suited to supporting a wide range of military operations. The littoral area has always created
problems for naval planners as most landings historically have had to endure a tactical
separation of the naval and land components, and hence an artificial seam between the Navy
and the Marines. With the end of the Cold War, amphibious operations are going to be more
difficult to conduct than in the past, and amphibious forces are going to have to adopt
manoeuvre warfare capabilities in order to successfully complete their missions. It is very
likely that amphibious forces will have to conduct operations against a numerically superior
enemy, who is on his own terrain, and be surrounded by a neutral, if not hostile populace. As
such, the concept of Operational Manoeuvre From The Sea (OMFTS) whereby the sea is used
as a manoeuvre space, and command and control is fast enough to cope with large amounts of
information, but at the same time allow subordinates maximum flexibility to use their
initiative, is increasingly attractive. It will be important not only for the combat elements to be
able to use this new concept, but the Combat Service Support (CSS) elements as well
Cretaceous sea level rise : down memory lane and the road ahead /
No full textCretaceous Sea Level Rise delves into the question of whether the observed short-term sea-level changes are regional (tectonic) or global (eustatic) and determines their possible relation to climate cycles; to assess the role of feedback mechanisms, i.e. thermal expansion/contraction of seawater, subsidence due to loading by water, changing vegetation of the Earth System and to investigate the relation of sea-level highs and lows to ocean anoxia and oxidation events, represented by black shales and oceanic red beds, and to evaluate the evidence for ephemeral glacial episodes or other climate events. Though research has been, and is being, conducted in these fields since the introduction of sea level cycles and sequence development concepts in the 1970"s, the available information is scattered. Cretaceous Sea Level Rise presents the current understanding and future directions of the research on Cretaceous sea level cycles in a single source, forming a reference work for beginners, graduates and postgraduates who are interested in this subject.Includes bibliographical references.Online resource; title from PDF title page (EBSCO, viewed November 24, 2015).Cretaceous Sea Level Rise delves into the question of whether the observed short-term sea-level changes are regional (tectonic) or global (eustatic) and determines their possible relation to climate cycles; to assess the role of feedback mechanisms, i.e. thermal expansion/contraction of seawater, subsidence due to loading by water, changing vegetation of the Earth System and to investigate the relation of sea-level highs and lows to ocean anoxia and oxidation events, represented by black shales and oceanic red beds, and to evaluate the evidence for ephemeral glacial episodes or other climate events. Though research has been, and is being, conducted in these fields since the introduction of sea level cycles and sequence development concepts in the 1970"s, the available information is scattered. Cretaceous Sea Level Rise presents the current understanding and future directions of the research on Cretaceous sea level cycles in a single source, forming a reference work for beginners, graduates and postgraduates who are interested in this subject.Front Cover; Cretaceous Sea Level Rise; Copyright Page; Contents; Preface; Acknowledgments; 1 Introduction; 2 Trends, Timings, and Magnitudes; 3 Causes and Mechanisms; 3.1 Endogenic Processes and Causes; 3.2 Eustasy and Related Causes; 3.2.1 Eustasy Under Greenhouse Conditions?; 3.2.2 Limno-eustasy; 3.2.3 Eustasy Due to Thermal Expansion-Contraction of Sea Water; 4 Methods, Tools and Techniques; 4.1 Sedimentary Proxies; 4.2 Physical Proxies; 4.3 Biological Proxies; 4.4 Geochemical Proxies; 4.5 Integrated Analyses for Documenting Sea Level Fluctuations; 5 Where It Stands and Where Is It Headed.Elsevie
Development of live shellfish export capacity in Oregon
No full textThis archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Includes bibliographical references (pages 25-26)Sponsored by the National Oceanic and Atmospheric Administration's National Sea Grant College Program, U.S. Department of Commerce, and by appropriations made by the Oregon State Legislature. Award number NA10OAR4170059, project number R/SF-35-PDMode of access: Internet from the Oregon Government Publications Collection
Three hundred eighty thousand year long stable isotope and faunal records from the Red Sea : influence of global sea level change on hydrography
No full textStable isotope and faunal records from the central Red Sea show high-amplitude oscillations for the past 380,000 years. Positive δ18O anomalies indicate periods of significant salt buildup during periods of lowered sea level when water mass exchange with the Arabian Sea was reduced due to a reduced geometry of the Bab el Mandeb Strait. Salinities as high as 53‰ and 55‰ are inferred from pteropod and benthic foraminifera δ18O, respectively, for the last glacial maximum. During this period all planktonic foraminifera vanished from this part of the Red Sea. Environmental conditions improved rapidly after 13 ka as salinities decreased due to rising sea level. The foraminiferal fauna started to reappear and was fully reestablished between 9 ka and 8 ka. Spectral analysis of the planktonic δ18O record documents highest variance in the orbital eccentricity, obliquity, and precession bands, indicating a dominant influence of climatically - driven sea level change on environmental conditions in the Red Sea. Variance in the precession band is enhanced compared to the global mean marine climate record (SPECMAP), suggesting an additional influence of the Indian monsoon system on Red Sea climates
The efficacy of emamectin benzoate against infestations of Lepeophtheirus salmonis on farmed Atlantic salmon (Salmo salar L) in Scotland, 2002-2006
No full textInfestations of the parasitic copepod Lepeophtheirus salmonis, commonly referred to as sea lice, represent a major challenge to commercial salmon aquaculture. Dependence on a limited number of theraputants to control such infestations has led to concerns of reduced sensitivity in some sea lice populations. This study investigates trends in the efficacy of the in-feed treatment emamectin benzoate in Scotland, the active ingredient most widely used across all salmon producing regions. Study data were drawn from over 50 commercial Atlantic salmon farms on the west coast of Scotland between 2002 and 2006. An epi-informatics approach was adopted whereby available farm records, descriptive epidemiological summaries and statistical linear modelling methods were used to identify factors that significantly affect sea lice abundance following treatment with emamectin benzoate (SLICEH, Schering Plough Animal Health). The results show that although sea lice infestations are reduced following the application of emamectin benzoate, not all treatments are effective. Specifically there is evidence of variation across geographical regions and a reduction in efficacy over time. Reduced sensitivity and potential resistance to currently available medicines are constant threats to maintaining control of sea lice populations on Atlantic salmon farms. There is a need for on-going monitoring of emamectin benzoate treatment efficacy together with reasons for any apparent reduction in performance. In addition, strategic rotation of medicines should be encouraged and empirical evidence for the benefit of such strategies more fully evaluated
Sea breeze generated waves on the coast of Varna
No full textFor the determination of the stability of coastlines, coastal erosion and the design of erosion protection studies, the “local” wave climate is the most important input parameter. For morphology, “local” means just outside the breaker line. On relatively calm days the local wave climate is strongly influenced by the effect of sea breeze. On the basis of the sea breeze model of HAURWITZ [1947] and HSU [1988] an operational method has been developed for the determination of sea breeze and the effect on coastal morphology. Examples are presented the Bulgarian Black Sea coastline.Hydraulic EngineeringCivil Engineering and Geoscience
Parasitic copepods from Egyptian Red Sea fishes: Bomolochidae Claus, 1875
No full text© The Author(s) 2015
Open Access - This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The attached file is the published version of the article.NHM Repositor
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