Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Rick A. Hagen"'
Publikováno v:
IEEE Geoscience and Remote Sensing Letters. 11:1956-1960
The U.S. Naval Research Laboratory (NRL) has been collecting sea ice data in the Arctic, off the northern coast of Alaska, with an airborne system employing a radar altimeter, lidar, and a photogrammetric camera in an effort to obtain wide swaths of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d0040667e29e5555f76bf2a55b81281
https://doi.org/10.1109/lgrs.2014.2314958
https://doi.org/10.1109/lgrs.2014.2314958
Autor:
John Brozena, Albert H. Hofstra, Debra A. Willard, Rick A. Hagen, Thomas M. Cronin, Wayne L. Newell, Peter R. Vogt, Anjana K. Shah, Joseph G. Rosenbaum
Publikováno v:
Marine Geology. :26-41
Shipboard magnetic field data collected over Chesapeake Bay exhibit low-amplitude, short-wavelength anomalies that most likely indicate shallow concentrations of heavy mineral sediments. Piston core layers and black sand beach samples exhibit enhance
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32aba6f00c426547175937580a403efd
https://doi.org/10.1016/j.margeo.2012.02.006
https://doi.org/10.1016/j.margeo.2012.02.006
Publikováno v:
Marine Geodesy. 25:19-26
Utilizing a hull-mounted, multinarrow beam echosounder onboard RV Polarstern, we measured variation of acoustic backscatter with incidence angles at two different sites in the Southern Oceans (Agulhas Plateau and the Riiser Larsen Sea). We modeled th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70275b6bdadf2a0439220c61083ef21e
https://doi.org/10.1080/014904102753516705
https://doi.org/10.1080/014904102753516705
Publikováno v:
Geo-Marine Letters. 20:174-181
Echo-peak data of outer and normal incidence beams from five different Southern Ocean bottom topographic regions have been analysed. The Rice and Extremal probability density function (PDF) statistical approaches reveal that the seabed roughness is,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44a35c2bf87ac40da0a4f856d946a9ad
https://doi.org/10.1007/s003670000052
https://doi.org/10.1007/s003670000052
Autor:
Rick A. Hagen, Peter R. Vogt
Publikováno v:
Marine Geology. 158:75-88
Methane gas in Chesapeake Bay sediments occurs in buried paleodrainage channels incised during the last glacial sealevel lowstand. Repeat acoustic surveys of two Chesapeake Bay sites during the past year (with a 2–15 kHz chirp sonar profiler and 10
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8e2a5e05423135b9e3717593df684ac
https://doi.org/10.1016/s0025-3227(98)00185-6
https://doi.org/10.1016/s0025-3227(98)00185-6
Publikováno v:
Deep Sea Research Part I: Oceanographic Research Papers. 45:1515-1540
Combined bathymetric, sediment echosounding and sediment coring data from two expeditions of the RV “Polarstern” (ANT-VIII/6, ANT-XI/4) provides the first more comprehensive overview of Cenozoic sedimentation in the remote area of the Gunnerus Ri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17e4a3c0f6ded02021a7649783587050
https://doi.org/10.1016/s0967-0637(98)00024-7
https://doi.org/10.1016/s0967-0637(98)00024-7
Publikováno v:
Marine Geodesy. 21:159-167
Kainan Maru Seamount lies off the northern end of the Gunnerus Ridgealong the margin of East Antarctica. The seamount is separated from theGunnerus Ridge by only about 15 km. Detailed Hydrosweep multibeamsurveys of the seamount have shown that the se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5286ee7926d1f7b9a8b7a767914c6ad0
https://doi.org/10.1080/01490419809388131
https://doi.org/10.1080/01490419809388131
Publikováno v:
Marine Geology. 129:197-205
A multibeam survey was conducted over San Antonio submarine canyon, near Valparaiso, Chile, in April and May 1993 using the SeaBeam 2000 system on the R/V Melville. The bathymetric data from this survey reveal a canyon with an overall sinuosity of 1.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50690a42e9da135e97bc5dffc289e10a
https://doi.org/10.1016/0025-3227(96)83345-7
https://doi.org/10.1016/0025-3227(96)83345-7
Publikováno v:
Marine Geology. 119:7-38
A SeaMARC II side-scan sonar, single-channel seismic reflection, and bottom sampling survey across the Peru-Chile forearc mapped a large submarine canyon system offshore of southern Peru and northern Chile. The main branch of this canyon system exten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6af55a7f5cfdfae95cebdc1188c81209
https://doi.org/10.1016/0025-3227(94)90138-4
https://doi.org/10.1016/0025-3227(94)90138-4
Autor:
Rick A. Hagen, R. Moberly
Publikováno v:
Marine Geophysical Researches. 16:145-161
A 1987 survey of the offshore Peru forearc using the SeaMARC II seafloor mapping system reveals that subduction of the Nazca Ridge has resulted in uplift of the lowermost forearc by as much as 1500 m. This uplift is seen in the varied depths of two f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3418ddf1b1a1dae7af400ef589dab49f
https://doi.org/10.1007/bf01224757
https://doi.org/10.1007/bf01224757