EarthScope is a major science initiative in the solid-earth sciences and has been described as "a new earth science initiative that will dramatically advance our physical understanding of the North American continent by exploring its three-dimensional structure through time". The initiative proposes to cover the United States with an array of instruments created to reveal how the continent was put together, how the continent is moving now, and what lies beneath the continent. The initiative is made of four components, three of which are funded by the Major Research Equipment program of the National Science Foundation (NSF) and one of which is mostly associated with the National Aeronautics and Space Administration (NASA). In response to a request by the NSF, the National Research Council (NRC) established a committee to review the science objectives and implementation planning of the three NSF components, United States Seismic Array (USArray), the Plate Boundary Observatory (PBO), and the San Andreas Fault Observatory at Depth (SAFOD). The committee was charged with answered four specific questions: Is the scientific rationale for EarthScope sound, and are the scientific questions to be addressed of significant importance? Is there any additional component that should be added to the EarthScope initiative to ensure that it will achieve its objective of a vastly increased understanding of the structure, dynamics, and evolution of the continental crust of North America? Are the implementation and management plans for the three elements of EarthScope reviewed here appropriate to achieve their objectives? Have the appropriate partnerships required to maximize the scientific outcomes from EarthScope been identified in the planning documents? Review of EarthScope Integrated Science presents the committee's findings and recommendations. To reach its conclusions the committee reviewed extensive written material and listened to presentations by members of the EarthScope Working Group and other interested scientists. The recommendations encompass science questions, management, education and outreach, and partnerships. Overall the committee was impressed by the EarthScope initiative.
Seventy percent of our blue planet is covered by oceans. Although progress has been made in understanding the role of oceans in climate change, locating energy reserves, revealing new life forms, and describing the flow of carbon through these systems, it may be time to catapult our understanding to new levels by undertaking an interdisciplinary, international, global ocean exploration program. The interim report outlines the committee's vision for a future international global ocean exploration program; this vision will be fully described, together with detailed recommendations for technological needs and capabilities, funding levels, and management structures to ensure a productive and successful ocean exploration program.
EarthScope is a major science initiative in the solid-earth sciences and has been described as "a new earth science initiative that will dramatically advance our physical understanding of the North American continent by exploring its three-dimensional structure through time". The initiative proposes to cover the United States with an array of instruments created to reveal how the continent was put together, how the continent is moving now, and what lies beneath the continent. The initiative is made of four components, three of which are funded by the Major Research Equipment program of the National Science Foundation (NSF) and one of which is mostly associated with the National Aeronautics and Space Administration (NASA). In response to a request by the NSF, the National Research Council (NRC) established a committee to review the science objectives and implementation planning of the three NSF components, United States Seismic Array (USArray), the Plate Boundary Observatory (PBO), and the San Andreas Fault Observatory at Depth (SAFOD). The committee was charged with answered four specific questions: Is the scientific rationale for EarthScope sound, and are the scientific questions to be addressed of significant importance? Is there any additional component that should be added to the EarthScope initiative to ensure that it will achieve its objective of a vastly increased understanding of the structure, dynamics, and evolution of the continental crust of North America? Are the implementation and management plans for the three elements of EarthScope reviewed here appropriate to achieve their objectives? Have the appropriate partnerships required to maximize the scientific outcomes from EarthScope been identified in the planning documents? Review of EarthScope Integrated Science presents the committee's findings and recommendations. To reach its conclusions the committee reviewed extensive written material and listened to presentations by members of the EarthScope Working Group and other interested scientists. The recommendations encompass science questions, management, education and outreach, and partnerships. Overall the committee was impressed by the EarthScope initiative.
Geodesy is the science of accurately measuring and understanding three fundamental properties of Earth: its geometric shape, its orientation in space, and its gravity field, as well as the changes of these properties with time. Over the past half century, the United States, in cooperation with international partners, has led the development of geodetic techniques and instrumentation. Geodetic observing systems provide a significant benefit to society in a wide array of military, research, civil, and commercial areas, including sea level change monitoring, autonomous navigation, tighter low flying routes for strategic aircraft, precision agriculture, civil surveying, earthquake monitoring, forest structural mapping and biomass estimation, and improved floodplain mapping. Recognizing the growing reliance of a wide range of scientific and societal endeavors on infrastructure for precise geodesy, and recognizing geodetic infrastructure as a shared national resource, this book provides an independent assessment of the benefits provided by geodetic observations and networks, as well as a plan for the future development and support of the infrastructure needed to meet the demand for increasingly greater precision. Precise Geodetic Infrastructure makes a series of focused recommendations for upgrading and improving specific elements of the infrastructure, for enhancing the role of the United States in international geodetic services, for evaluating the requirements for a geodetic workforce for the coming decades, and for providing national coordination and advocacy for the various agencies and organizations that contribute to the geodetic infrastructure.
The report reviews NASA's solid-earth science strategy, placing particular emphasis on observational strategies for measuring surface deformation, high-resolution topography, surface properties, and the variability of the earth's magnetic and gravity fields. The report found that NASA is uniquely positioned to implement these observational strategies and that a number of agency programs would benefit from the resulting data. In particular, the report strongly endorses the near-term launch of a satellite dedicated to L-band InSAR measurements of the land surface, which is a key component of the U.S. Geological Survey's hazards mitigation program and the multi-agency EarthScope program.
The report reviews NASA's solid-earth science strategy, placing particular emphasis on observational strategies for measuring surface deformation, high-resolution topography, surface properties, and the variability of the earth's magnetic and gravity fields. The report found that NASA is uniquely positioned to implement these observational strategies and that a number of agency programs would benefit from the resulting data. In particular, the report strongly endorses the near-term launch of a satellite dedicated to L-band InSAR measurements of the land surface, which is a key component of the U.S. Geological Survey's hazards mitigation program and the multi-agency EarthScope program.
Water managers rely on predicting changes in the hydrologic cycle on seasonal-to-interannual time frames to prepare for water resource needs. Seasonal to interannual predictability of the hydrologic cycle is related to local and remote influences involving land processes and ocean processes, such as the El Niño Southern Oscillation. Although advances in understanding land-surface processes show promise in improving climate prediction, incorporating this information into water management decision processes remains a challenge since current models provide only limited information for predictions on seasonal and longer time scales. To address these needs, the Global Energy and Water Cycle Experiment (GEWEX) Americas Prediction Project (GAPP) was established in 2001 to improve how changes in water resources are predicted on intraseasonal-to-interannual time scales for the continental United States. The GAPP program has developed a science and implementation plan to guide its science activities, which describes strategies for improving prediction and decision support in the hydrologic sciences. This report by the National Research Council provides a review of the GAPP Science and Implementation Plan, outlining suggestions to strengthen the plan and the GAPP program overall.
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