OCEANS 2017 – Anchorage最新文献

{"title":"Project CONVERGE: A broader impact plan that engaged educators and students in the process of polar ocean science campaigns","authors":"J. Kohut, J. McDonnell, Kristin Hunter-Thomson, Harold Clark","doi":"10.4031/mtsj.52.1.9","DOIUrl":"https://doi.org/10.4031/mtsj.52.1.9","url":null,"abstract":"The core educational objective of our approach is to use connections between deployed science teams and our target audiences with real-time data to increase awareness and understanding of the Antarctic ecosystem as it responds to global climate change. In 2010–2011 we completed a rigorous field campaign to examine the impact of upwelled Modified Circumpolar Deep Water (MCDW) on the Ross Sea ecosystem (SEAFAReRS). Based on this experience, we applied a multi-tiered education program to a project that linked local physical oceanography to the foraging ecology of Adelie Penguins along the West Antarctic Peninsula (CONVERGE)1. Our approach included educator professional development, data-based classroom lessons to provide students with an understanding of the hypotheses, daily activity blogs developed by an on-site science writer and photographer, scheduled live video connections between the deployed science team and classrooms back in the US, and a Student Research Symposium (with over half of the students using the scientists data in real time to conduct their own investigations). Through a comprehensive evaluation program, educators reported a significant change in their teaching practice of increasing students' data collection and analysis in the field, rather than just in a laboratory. Additionally, the educators and students both reported increases in their engagement in science and identification with science as a result of participating in the project.","PeriodicalId":206291,"journal":{"name":"OCEANS 2017 – Anchorage","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115567010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing preloading pressure of pre-charged gas for isobaric gas-tight hydrothermal samplers","authors":"Liang Huang, Yun Shen, Chaowu Sheng, Ji Wu, Haocai Huang","doi":"10.1115/1.4038901","DOIUrl":"https://doi.org/10.1115/1.4038901","url":null,"abstract":"It is required that in-situ pressure of hydrothermal fluids should be maintained before analyzing. For this reason, gas-tight samplers with accumulator attached on the sample chamber have been developed. Pre-charged gas in the accumulator is used for compensating decompression of sample caused by its volume change during withdrawing onboard. Besides the structure of the sampler, pre-charged internal pressure is a critical factor for the pressure-retaining ability of the sampler. In this artical, comprehensive analysis of the pre-charged internal pressure on the sampling efficiency and pressure stability is carried out, based on the ideal gas law and theoretical volume change of chamber under high internal pressure. It is found that pre-charged internal pressure should be set separately in different ranges of depth, Optimizing internal pressure in accumulators for isobaric gas-tight hydrothermal samplers can not only have better sampling performance at different depths, but also can significantly increase the volume of each sample.","PeriodicalId":206291,"journal":{"name":"OCEANS 2017 – Anchorage","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115095950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Divers augmented vision display (DAVD) emerging technology development","authors":"D. G. Gallagher, R. Manley, W. W. Hughes, Allie M. Pilcher","doi":"10.1117/12.2282874","DOIUrl":"https://doi.org/10.1117/12.2282874","url":null,"abstract":"Military diving operations are routinely conducted in what can be one of the most inhospitable environments on the planet, frequently characterized by zero visibility. The inability to clearly see the immediate operational environment has historically been a serious limitation to manned diving operations — whether the mission is ship husbandry, underwater construction, salvage, or scientific research. U.S. Navy diving is an integral part of the nation's defense strategy with a continuing requirement to conduct manned intervention in the water column. To ensure technical superiority across the entire spectrum of diving operations we must identify, exploit, and develop technology to advance the state-of-the-art in diving equipment. This can only be achieved by investing in, and supporting, focused research and development with specific goals to further diving capabilities. Under a project sponsored by the Office of Naval Research (ONR) and Naval Sea Systems Command (NAVSEA), the Naval Surface Warfare Center-Panama City Division (NSWC PCD) has developed a prototype see-through head-up display system for a U. S. Navy diving helmet — the Divers Augmented Vision Display (DAVD). The DAVD system uses waveguide optical display modules that couple images from a micro display into a waveguide optic, translate the images through a series of internal reflections, finally exiting toward the diver's eye providing a magnified, see-through virtual image at a specific distance in front of the diver. The virtual images can be critical information and sensor data including sonar images, ship husbandry and underwater construction schematics, enhanced navigation displays, augmented reality, and text messages. NSWC PCD is the U.S. Navy's leading laboratory for research, development, testing, evaluation, and technology transition of diver visual display systems; with unique facilities for rapid prototyping and manufacturing, human systems integration and extreme environment testing. Along with NSWC PCD, the Navy Experimental Diving Unit (NEDU), and Naval Diving and Salvage Training Center (NDSTC) are co-located tenant commands at the Naval Support Activity Panama City (NSA PC). This paper provides a brief background on the development of diver head-up display systems, waveguide optical display technology, development of the DAVD prototype, results of diver evaluations, and recommendations for accelerated development of this game changing capability.","PeriodicalId":206291,"journal":{"name":"OCEANS 2017 – Anchorage","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115772561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A boundary delineation system for the bureau of ocean energy management","authors":"D. Vandegraft","doi":"10.5194/ICA-PROC-1-118-2018","DOIUrl":"https://doi.org/10.5194/ICA-PROC-1-118-2018","url":null,"abstract":"Federal government mapping of the offshore areas of the United States in support of the development of oil and gas resources began in 1954. The first mapping system utilized a network of rectangular blocks defined by State Plane coordinates which was later revised to utilize the Universal Transverse Mercator grid. Creation of offshore boundaries directed by the Submerged Lands Act and Outer Continental Shelf Lands Act were mathematically determined using early computer programs that performed the required computations, but required many steps. The Bureau of Ocean Energy Management has revised these antiquated methods using GIS technology which provide the required accuracy and produce the mapping products needed for leasing of energy resources, including renewable energy projects, on the outer continental shelf. (Note: this is an updated version of a paper of the same title written and published in 2015).","PeriodicalId":206291,"journal":{"name":"OCEANS 2017 – Anchorage","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128739435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}