Index Catalog // ScholarsArchive@OSU

Ocean wavenumber estimation from wave-resolving time series imagery

Creator:: Plant, Nathaniel G., Holland, K. Todd, and Haller, Merrick C.
Abstract:: We review several approaches that have been used to estimate ocean surface gravity wavenumbers from wave-resolving remotely sensed image sequences. Two fundamentally different approaches that utilize these data exist. A power spectral density approach identifies wavenumbers where image intensity variance is maximized. Alternatively, a cross-spectral correlation approach identifies wavenumbers where...
Resource Type:: Article
Full Text:: approximately 20:00 GMT, the sample cross-spectral correlation (4) was computed at a series of frequencies

Seismic sequence stratigraphy and tectonic evolution of Southern Hydrate Ridge

Creator:: Chevallier, Johanna, Tréhu, Anne Martine, Bangs, Nathan Lawrence Bailey, Johnson, Joel E., and Meyer, H. Jack
Abstract:: This paper presents a seismic sequence and structural analysis of a high-resolution three-dimensional seismic reflection survey that was acquired in June 2000 in preparation for Ocean Drilling Program (ODP) Leg 204. The seismic data were correlated with coring and logging results from nine sites drilled in 2002 during Leg 204....
Resource Type:: Article
Full Text:: TECTONIC EVOLUTION OF SOUTHERN HYDRATE RIDGE1 Johanna Chevallier,2,3 Anne M. Tréhu,2 Nathan L. Bangs,4

Investigation of limestone ecotypes of white spruce based on a provenance test series

Creator:: Lesser, Mark R., Cherry, Marilyn, and Parker, William H.
Abstract:: Previous laboratory and field studies have presented evidence for the existence of limestone ecotypes in white spruce (Picea glauca (Moench) Voss). Remeasurements of the range-wide 410 series of provenance trials were used for further evaluation of the existence of these ecotypes. In 2001, heights were measured of 23 provenances grown...
Resource Type:: Article
Full Text:: provenance test series Mark R. Lesser, Marilyn Cherry, and William H. Parker Abstract: Previous laboratory

The M₂ Internal Tide off Oregon: Inferences from Data Assimilation

Creator:: Kurapov, Alexander L., Egbert, Gary D., Allen, J. S., Miller, Robert N., Erofeeva, Svetlana Y., and Kosro, P. M.
Abstract:: A linearized baroclinic, spectral-in-time tidal inverse model has been developed for assimilation of surface currents from coast-based high-frequency (HF) radars. Representer functions obtained as a part of the generalized inverse solution show that for superinertial flows information from the surface velocity measurements propagates to depth along wave characteristics, allowing internal...
Resource Type:: Article
Full Text:: 14 km in water of depth H 5 100 m, given a typical value of N 5 0.01 s21. Topographic variation may

Millennial–scale CaCO₃ and C[subscript ORG] events along the northern and central California margins : stratigraphy and origins

Creator:: Lyle, Mitchell, Mix, Alan C., Ravelo, A. Christina, Andreasen, Dyke, Heusser, Linda, and Olivarez, Annette
Abstract:: Sediments from five Leg 167 drill sites and three piston cores were analyzed for C[subscript ORG] and CaCO₃. Oxygen isotope stratigraphy on benthic foraminifers was used to assign age models to these sedimentary records. We find that the northern and central California margin is characterized by k.y.-scale events that can...
Resource Type:: Article
Full Text:: site survey cruise, for example, reached 140 ka at 15 m below the sedi- ment surface. Long time series

Data report : trace element, Sr isotope, and Ge/SI composition of fluid and sediments in ridge-flank low-temperature hydrothermal environments

Creator:: Hulme, Samuel M., Wheat, C. Geoffrey, Coggon, Rosalind M., and McManus, James
Abstract:: The data presented in this report demonstrate significant improvements in the ability to constrain trace element and Sr isotopic concentrations in sediments overlying ridge-flank hydrothermal systems. Improved sampling methods orchestrated by the Integrated Ocean Drilling Program (i.e., advanced piston coring and anoxic sample processing) enabled the collection of reactive pore...
Resource Type:: Article
Full Text:: for 1 h prior to the start of the series to condition sample inlet cones on the HR-ICP-MS. Accuracy

Investigation of microorganisms and DNA from subsuface thermal water and rock from the east flank of Juan de Fuca Ridge

Creator:: Fisk, Martin R., Thorseth, Ingunn H., Urbach, Ena, and Giovannoni, Stephen J.
Abstract:: During Leg 168 of the Ocean Drilling Program, basalts were recovered by drilling and subsurface water was collected with a water sampling tool at Hole 1026B on the east flank of Juan de Fuca Ridge. Microorganisms were found in both types of samples. The microorganisms in the basalt appear to...
Resource Type:: Article
Full Text:: FUCA RIDGE1 Martin R. Fisk,2 Ingunn H. Thorseth,3 Ena Urbach,4 and Stephen J. Giovannoni4 ABSTRACT

Astronomically calibrated timescales from 6 to 2.5 Ma and Benthic Isotope Stratigraphies, sites 1236, 1237, 1239, and 1241

Creator:: Tiedemann, Ralf, Sturm, Arne, Steph, Silke, Lund, Steven P., and Stoner, Joseph
Abstract:: We present benthic isotope stratigraphies for Sites 1236, 1237, 1239, and 1241 that span the late Miocene–Pliocene time interval from 6 to 2.4 Ma. Orbitally tuned timescales were generated for Sites 1237 and 1241 by correlating the high-frequency variations in gamma ray attenuation density, percent sand of the carbonate fraction,...
Resource Type:: Article
Full Text:: deletes 63 cm from the former composite depth (interval 202-1241A-16H-4, 7–72 cm; corresponding to an

Error spectrum for the global M₂ ocean tide

Creator:: Ray, Richard D., Eanes, R. J., Egbert, Gary D., and Pavlis, N. K.
Abstract:: The most accurate determinations of the global ocean tides are currently based on altimeter measurements made by the Topex/Poseidon satellite. The error spectrum corresponding to the M₂ tidal solution is here estimated, primarily by inverse methods and secondarily by simple differencing in flatter than tidal signal spectrum, and it exceeds...
Resource Type:: Article
Full Text:: amplitude spectrum is [Wahr et al., 1998] (Z aXn n --2 •Nn -- a •Cnm q- rn \m-O (4) 3. Tidal error

Late quaternary paleomagnetic secular variation and chronostratigraphy from ODP sites 1233 and 1234

Creator:: Lund, Steven P., Stoner, Joseph, and Lamy, Frank
Abstract:: During Ocean Drilling Program Leg 202, detailed shipboard paleomagnetic measurements at Sites 1233 and 1234 identified a reproducible high-resolution record of paleomagnetic secular variation (PSV) at each site. These records also contained evidence for three magnetic field excursions. This paper summarizes the complete paleomagnetic record from Site 1233 and the...
Resource Type:: Article
Full Text:: 0 10 20 30 40 50 60 70 80 Site 1233 sediment depth (mcd) S ite 1 23 4 se di m en t d ep th

ScholarsArchive@OSU

Ocean wavenumber estimation from wave-resolving time series imagery

Seismic sequence stratigraphy and tectonic evolution of Southern Hydrate Ridge

Investigation of limestone ecotypes of white spruce based on a provenance test series

The M₂ Internal Tide off Oregon: Inferences from Data Assimilation

Millennial–scale CaCO₃ and C[subscript ORG] events along the northern and central California margins : stratigraphy and origins

Data report : trace element, Sr isotope, and Ge/SI composition of fluid and sediments in ridge-flank low-temperature hydrothermal environments

Investigation of microorganisms and DNA from subsuface thermal water and rock from the east flank of Juan de Fuca Ridge

Astronomically calibrated timescales from 6 to 2.5 Ma and Benthic Isotope Stratigraphies, sites 1236, 1237, 1239, and 1241

Error spectrum for the global M₂ ocean tide

Late quaternary paleomagnetic secular variation and chronostratigraphy from ODP sites 1233 and 1234

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