Conoco

Energy where he was manager of crude oil quality programs for the Strategic Petroleum Reserve. This included development and management of analytical programs for monitoring quality of stocks, and research related to the biological and geochemical aspects of petroleum stockpiling. Harry was employed by the Department of Energy for over 30 years, prior to which he held several positions with other U.S. Government agencies and at the University of Manchester (UK). Following retirement from the Department of Energy, Harry became Executive Director of the Crude Oil Quality Association, a position he held until resigning in 2013. Following his resignation, he was named Executive Director Emeritus. Harry has authored or coauthored a number of articles on crude oil analysis, characterization, and storage, and on fuel stability and cleanliness. He has been a member of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants since the 1980s, and is past chairman of Subcommittee D02.14 on Stability , Cleanliness and Compatibility of Liquid Fuels. Harry remains active in several D02 Subcommittees, and is a technical advisor to ASTM for their Crude Oil Proficiency Testing Program (PTP). In 2005, he and Clifford Mills developed the ASTM training course on “Crude Oil: Sampling, Testing, and Evaluation.” In 2008, he received the ASTM International George V. Dyroff Award of Honorary Committee D02 Membership. Other memberships include the API Committee on Measurement Quality, and IASH, the International Association for Stability, Handling, and Use of Liquid Fuels. He is chairman emeritus of IASH, and was elected to honorary membership in 2009. Clifford O. Mills is retired from CONOCO where he served in numerous capacities. At retirement, after 35 years, he was a laboratory consultant with an emphasis on crude oil analysis. Mr. Mills has been involved with ASTM methods development since the early 1980s. Until recently, he was chairman of ASTM D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material, and also chaired D02. H0 on Liquefied Petroleum Gas for several years. He continues to be active in D02.03, D02.04, D02.05, D02.06 and D02.H0. Mr. Mills has been actively involved in development of numerous ASTM methods of analysis. Together with Mr. Giles, he serves as technical advisor to ASTM for their Crude Oil ILCP. For several years, Mr. Mills served as co-instructor for the crude oil training course and, together with Mr. Giles, presented this at numerous locations worldwide. He is a member of the Crude Oil Quality Association, and author of an authoritative paper on crude contaminants and analysis requirements presented at one of their meetings. This paper is now widely referenced and used as an instructional aid. In 2008, he received the ASTM International George V. Dyroff Award of Honorary Committee D02 Membership. ASTM INTERNATIONAL Manual

The inverse scattering problem for a layered acoustic medium is considered from the first‐order differential equations of motion, resulting in a vector formulation of the problem, and using a vector form of the Schrödinger inverse scattering methods. The result is a vector Marchenko equation. The differentiability constraints on the acoustic impedance are somewhat relaxed compared to the more standard approach of beginning with the wave equation. The solution for plane waves at normal incidence is given along with a good approximate solution which is easily obtainable and takes into account transmission losses not included in the normal WKBJ‐Born approximation. A new solution for extracting separately the velocity and density of the medium using the reflection response for two different angles of incidence is given, which involves a nonlinear integral equation to relate the apparent traveltimes to depth.

Bathymetry is foundational data, providing basic infrastructure for scientific, economic, educational, managerial, and political work. Applications as diverse as tsunami hazard assessment, communications cable and pipeline route planning, resource exploration, habitat management, and territorial claims under the Law of the Sea all require reliable bathymetric maps to be available on demand. Fundamental Earth science questions, such as what controls seafloor shape and how seafloor shape influences global climate, also cannot be answered without bathymetric maps having globally uniform detail. Current bathymetric, charts are inadequate for many of these applications because only a small fraction of the seafloor has been surveyed. Modern multibeam echosounders provide the best resolution, but it would take more than 200 ship-years and billions of dollars to complete the job. The seafloor topography can be charted globally, in five years, and at a cost under $100M. A radar altimeter mounted on an orbiting spacecraft can measure slight variations in ocean surface height, which reflect variations in the pull of gravity caused by seafloor topography. A new satellite altimeter mission, optimized to map the deep ocean bathymetry and gravity field, will provide a global map of the world's deep oceans at a resolution of 6-9 kin. This resolution threshold is critical for a large number of basic science and practical applications, including: determining the effects of bathymetry and seafloor roughness on ocean circulation, mixing, climate, and biological communities, habitats, and mobility;understanding the geologic processes responsible for ocean floor features unexplained by simple plate tectonics, such as abyssal hills, seamounts, microplates, and propagating rifts;.improving tsunami hazard forecast accuracy by mapping the deep-ocean topography that steers tsunami wave energy;mapping the marine gravity field to improve inertial navigation and provide homogeneous coverage of continental margins;providing bathymetric maps for numerous other practical applications, including reconnaissance for submarine cable and pipeline routes, improving tide models, and assessing potential territorial claims to the seabed under the United Nations Convention on the Law of the Sea.Because ocean bathymetry is a fundamental measurement of our planet, there is a broad spectrum of interest from government, the research community, industry, and the general public. Mission requirements. The resolution of the altimetry technique is limited by physical law, not instrument capability. Everything that can be mapped from space can be achieved now, and there is no gain in waiting for technological advances. Mission requirements for Bathymetry from Space are much less stringent and less costly than typical physical oceanography missions. Long-term sea-surface height accuracy is not needed; the fundamental measurement is the slope of the ocean surface to an accuracy of similar to 1 prad (1 mm km(-1)). The main mission requirements are:improved range precision (a factor of two or more improvement in altimeter range precision with respect to current altimeters is needed to reduce the noise due to ocean waves); - fine cross-track spacing and long mission duration (a ground track spacing of 6 km or less is required. A six-year mission would reduce the error by another factor of two);moderate inclination (existing satellite altimeters have relatively high orbital inclinations, thus their resolution of east-west components of ocean slope is poor at low latitudes. The new mission should have an orbital inclination close to 60 degrees or 120 degrees so as to resolve north-south and east-west components almost equally while still covering nearly all the world's ocean area);near-shore tracking (for applications near coastlines, the ability of the instrument to track the ocean surface close to shore, and acquire the surface soon after leaving land, is desirable).

ADVERTISEMENT RETURN TO ISSUEPREVFeaturesNEXTFundamentals for developing effective safety trainingB. TophojB. TophojMore by B. TophojCite this: J. Chem. Health Saf. 2006, 13, 5, 9–12Publication Date (Web):September 1, 2006Publication History Published online1 September 2006Published inissue 1 September 2006https://pubs.acs.org/doi/10.1016/j.jchas.2005.12.001https://doi.org/10.1016/j.jchas.2005.12.001research-articleACS Publications© 2006 American Chemical SocietyRequest reuse permissionsArticle Views41Altmetric-Citations-LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts