19 research outputs found

    Bibliography of documents and related materials collected for the Hawaii Geothermal Project Environmental Impact Statement

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    Remote Sensing and the Earth

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    A text book on remote sensing, as part of the earth resources Skylab programs, is presented. The fundamentals of remote sensing and its application to agriculture, land use, geology, water and marine resources, and environmental monitoring are summarized

    Morphology and Timing of Submarine Mass Movements on the Northwest British Continental Margin

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    A variety of factors influence the stability of submarine slopes and this thesis investigates those operating on the northwest British continental margin and Barra Fan. Through analysis of North Atlantic sector submarine mass movements, a conceptual model of continental slope failure is proposed and examined against the Peach slide case study. Situated on the eastern flank of the Rockall Trough, the Barra Fan is subject to cyclonic ocean circulation and has experienced growth since continental uplift during the mid-Pliocene. Surface and shallow-subsurface morphology of the fan is determined using pinger sub-bottom profile (paper records scanned and converted to SEGY format), sidescan sonar and multibeam echosounder data. A number of different acoustic facies are mapped, including: contourites, hemipelagites and debris flows. Analysis of gravity core 56/-10/239 identifies a debris flow containing material of glacial age and AMS ¹⁴C dating of planktonic foraminifera constrain emplacement prior to 11.9 ka cal BP. Reference to additional sediment cores located in the Barra Fan region (MD95-2006 and 56/-10/36) allows the development of a chronology for the contourites and hemipelagites interpreted during geophysical investigation. This allows constraint of two periods of slope failure during the late Pleistocene: the first between 21 and 20 ka cal BP, shortly after the British ice sheetʼs maximum advance; and the second between 12 and 11 ka cal BP at the termination of the Younger Dryas stadial. Processes similar to those on the Norwegian continental margin seem to operate on the northwest British continental margin, the morphology and setting of the Peach slide is similar to Storegga and Trænadjupet, suggesting that similar processes initiated failure. Important roles seem to be played by contouritic and glaciogenic sedimentation, producing excess pore pressure in the fanʼs sediments with fluid expulsion visible in the acoustic data

    Science-based restoration monitoring of coastal habitats, Volume Two: Tools for monitoring coastal habitats

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    Healthy coastal habitats are not only important ecologically; they also support healthy coastal communities and improve the quality of people’s lives. Despite their many benefits and values, coastal habitats have been systematically modified, degraded, and destroyed throughout the United States and its protectorates beginning with European colonization in the 1600’s (Dahl 1990). As a result, many coastal habitats around the United States are in desperate need of restoration. The monitoring of restoration projects, the focus of this document, is necessary to ensure that restoration efforts are successful, to further the science, and to increase the efficiency of future restoration efforts

    Earth Resources: A continuing bibliography with indexes, issue 11, October 1976

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    This bibliography lists 714 reports, articles, and other documents introduced into the NASA scientific and technical information system between July 1976 and September 1976. Emphasis is placed on the use of remote sensing and geophysical instrumentation in spacecraft and aircraft to survey and inventory natural resources and urban areas. Subject matter is grouped according to agriculture and forestry, environmental changes and cultural resources, geodesy and cartography, geology and mineral resources, hydrology and water management, data processing and distribution systems, instrumentation and sensors, and economic analysis

    The State of Coral Reef Ecosystems of the United States and Pacific Freely Associated States: 2005

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    Executive Summary: For over three decades, scientists have been documenting the decline of coral reef ecosystems, amid increasing recognition of their value in supporting high biological diversity and their many benefits to human society. Coral reef ecosystems are recognized for their benefits on many levels, such as supporting economies by nurturing fisheries and providing for recreational and tourism opportunities, providing substances useful for medical purposes, performing essential ecosystem services that protect against coastal erosion, and provid-ing a diversity of other, more intangible contributions to many cultures. In the past decade, the increased awareness regarding coral reefs has prompted action by governmental and non-governmental organizations, including increased funding from the U.S. Congress for conservation of these important ecosystems and creation of the U.S. Coral Reef Task Force (USCRTF) to coordinate activities and implement conservation measures [Presidential Executive Order 13089]. Numerous partnerships forged among Federal agencies and state, local, non-governmental, academic and private partners support activities that range from basic science to systematic monitoring of ecosystem com-ponents and are conducted by government agencies, non-governmental organizations, universities, and the private sector. This report shares the results of many of these efforts in the framework of a broad assessment of the condition of coral reef ecosystems across 14 U.S. jurisdictions and Pacific Freely Associated States. This report relies heavily on quantitative, spatially-explicit data that has been collected in the recent past and comparisons with historical data, where possible. The success of this effort can be attributed to the dedication of over 160 report contributors who comprised the expert writing teams for each jurisdiction. The content of the report chapters are the result of their considerable collaborative efforts. The writing teams, which were organized by jurisdiction and comprised of experts from numerous research and management institutions, were provided a basic chapter outline and a length limit, but the content of each chapter was left entirely to their discretion. Each jurisdictional chapter in the report is structured to: 1) describe how each of the primary threats identified in the National Coral Reef Action Strategy (NCRAS) has manifested in the jurisdiction; 2) introduce ongoing monitoring and assessment activities relative to three major categories of inquiry – water quality, benthic habitats, and associated biological communities – and provide summary results in a data-rich format; and 3) highlight recent management activities that promote conservation of coral reef ecosystems

    Remote Sensing of Earth Resources: A literature survey with indexes (1970 - 1973 supplement). Section 1: Abstracts

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    Abstracts of reports, articles, and other documents introduced into the NASA scientific and technical information system between March 1970 and December 1973 are presented in the following areas: agriculture and forestry, environmental changes and cultural resources, geodesy and cartography, geology and mineral resources, oceanography and marine resources, hydrology and water management, data processing and distribution systems, instrumentation and sensors, and economic analysis

    Earth Resources: A continuing bibliography (issue 32)

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    This bibliography list 580 reports, articles and other documents introduced into the NASA scientific and technical information system. Emphasis is placed on the use of remote sensing and geophysical instrumentation in spacecraft and aircraft to survey and inventory natural resources and urban areas. Subject matter is grouped according to agriculture and forestry, environmental changes and cultural resources, geodesy and cartography, geology and mineral resources, hydrology and water management, data processing and distribution systems, instrumentation and sensors, and economic analysis
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