25,727 research outputs found
Sandwich Town Neck Beach UAS Aerial Imagery 2018-01-04 (Peter Traykovski, Woods Hole Oceanographic Intitution)
No full textAerial Images from a DJI Phantom 4 with FC330 Camera and Kinematic GPS Marker Flag Locations, in support of coastal morphology studies
Author Peter FitzSimons speaking at the National Library of Australia, Canberra, 13 November 2012 /
No full textTitle from acquisitions documentation.; Part of the collection: Portraits of author Peter FitzSimons speaking at the National Library of Australia, Canberra, 13 November 2012.; Acquired in digital format; access copy available online.; Mode of access: Online.; Photographed by a staff member of the National Library of Australia
Using Unmanned Survey Vehicles to Measure Coastal Morphodynamic Processes and Improve Models
No full textThis talk will describe the development of a small surf capable USV and its use in conducting bathymetric surveys to improve sand bar migration models. Surveys were conducted at Pea Island, NC, South shore of Martha’s Vineyard MA, and East facing beaches of Cape Cod. Surveys strategies were adapted to the unique challenges of each environment and new features such as real-time data transmission and map generation were developed to ensure successful outcomes. Along with the bathymetric data structure from motion topography from a tethered blimp or GNSS track line data from a back-pack system was usually collected to create bathy-topo maps from –10 m depths to + 3 m elevations. Data from the surveys documented both offshore sandbar migration during a highly energetic wave event at Martha’s Vineyard (4 m wave height) and onshore migration at Pea Island in response to moderate energy waves.
Coupled nearshore hydrodynamic, sediment transport and morphology models such as Xbeach typically require different scaling coefficients for wave skewness and acceleration sand transport terms to hindcast onshore or offshore sand bar migration, e.g., the direction of migration needs to be known a-priori for successful hindcasts. The talk will describe implementing a new bedload model based on measurements of wave formed ripple migration into Xbeach and the implication for sand bar migration prediction. The new bedload model has enhanced transport rates at low stresses compared to those currently included in XBeach which results in improved ability to predict on and offshore sand bar migration events with a single set of tuning coefficients.
Presenter Bio
Peter Traykovski received his B.S. degree in mechanical engineering from Duke University in Durham, NC in 1988, an M.S. & Ocean Engineer degree from the Massachusetts Institute of Technology & Woods Hole Oceanographic Institution Join Program (MIT&WHOI) in Cambridge and Woods Hole, MA in 1994, and a Ph.D. in Applied Ocean Sciences and Engineering from the MIT & WHOI Joint program in 1998.
He was a post-doctoral investigator at WHOI from 1998 to 2000 and has been employed there as a scientist since 2000. He currently holds the position of Associate Scientist with Tenure in the department of Applied Ocean Physics and Engineering. His research interests include Sediment Transport, Coastal Processes, and Acoustical Oceanography. In sediment transport, his research has focused on measurements and modeling of time dependent bedform morphology and the dynamics of high concentration fine sediment (fluid mud) flows in the wave boundary layer. One of his most important contributions was the discovery of wave supported turbidity flows of fluid mud on relatively flat continental shelves in the late 1990’s. In addition to his scientific interests, he has also focused on developing technology for measuring sediment transport processes and coastal morphology. This has included adapting high frequency imaging sonars for autonomous use in the ocean and development of pulse-coherent Doppler profilers for measuring turbulent flows. More recently he has been active in developing low cost autonomous surface vessels (ASVs) for coastal oceanographic and bathymetric survey. Combining measurements from with topography generated with unmanned aerial system (UAS) photogrammetric techniques allows high resolution and rapid repeat interval surveying of coastal systems.
Dr. Traykovski a member of the Acoustical Society of America, American Geophysical Union and Institute of Electrical and Electronics Engineers
Moral Good, the Beatific Vision, and God’s Kingdom Writings by Germain Grisez and Peter Ryan, S.J.. Edited by Peter J. Weigel
No full textFor close to half a century, the work of Germain Grisez has been highly influential, and his writings continue to receive considerable attention from philosophers and theologians of diverse viewpoints. His co-author for this work is the professor and noted moral theologian Fr. Peter Ryan, S.J., currently the executive director of the Secretariat of Doctrine and Canonical Affairs of the United States Conference of Catholic Bishops (USCCB). These two eminent scholars explore fundamental questions about Christian eschatology, moral theory, the purpose of human life, and the promise of human fulfilment. The authors examine Christian teaching on the final destiny of persons, investigating the meaning of God's kingdom, the hope of the beatific vision, and the centrality of moral goodness and divine grace in one's final end. This work is an ideal source for students, scholars, ministers and lay persons interested in basic questions of Christian theology, the philosophy of religion, ethical theory, and Catholic doctrin
Murder on the mountain: author talk with Peter J. Wosh
No full textAuthor talk by Peter J. Wosh on May 5th, 2022, on his book, "Murder on the Mountain: crime, passion, and punishment in gilded age New Jersey.
Horizontal directional spectrum estimation of the Heard Island transmissions
No full textThesis (Ocean. E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, and Woods Hole Oceanographic Institution, 1994.Includes bibliographical references.by Peter Traykovski.Ocean.E
Observations and modeling of sand transport in a wave dominated environment
No full textThesis (Ph. D.)--Joint Program in Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Dept. of Ocean Engineering; and the Woods Hole Oceanographic Institution), 1998.Includes bibliographical references.by Peter Traykovski.Ph.D
Lunchtime Talk with Author and Attorney Peter Godwin
No full textAuthor and attorney Peter Godwin gave a lunchtime talk about the topics discussed in his book, The Fear, which focuses on the human rights situation in Zimbabwe under the rule of Robert Mugabe
An essay about the Francis Paudras Collection on Bud Powell by Peter Pullman
No full textThis is an essay about the Francis Paudras Collection on Bud Powell written by Peter Pullman, a jazz scholar and author of Wail: The Life of Bud Powell (Brooklyn: Bop Changes, 2012).One image file (pdf)This project was supported by a Recordings at Risk grant from the Council on Library and Information Resources (CLIR). The grant program is made possible by funding from The Andrew W. Mellon Foundation
Professor Peter Singer speaking at the National Press Club Canberra, 11 February 2009 [picture] /
No full textTitle devised by cataloguer based on information from acquisitions documentation.; Part of the collection: Humanitarian author Professor Peter Singer at the National Press Club, Canberra, 11 February 2009.; Acquired in digital format; access copy available online.; Mode of access: Internet via World Wide Web.; Photographed by a staff member of the National Library of Australia, 2009
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