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Articles 1 - 6 of 6
Full-Text Articles in Physical Sciences and Mathematics
Development Of A Large-Scale Laboratory Facility For Sediment Transport Research, David G. Hamilton, Bruce A. Ebersole, Ernest R. Smith, Ping Wang
Development Of A Large-Scale Laboratory Facility For Sediment Transport Research, David G. Hamilton, Bruce A. Ebersole, Ernest R. Smith, Ping Wang
Geology Faculty Publications
No abstract provided.
Seismic And Acoustic Signals Detected At Loihi Seamount By The Hawaii Undersea Geo-Observatory, Jacqueline Caplan-Auerbach, F. Duennebier
Seismic And Acoustic Signals Detected At Loihi Seamount By The Hawaii Undersea Geo-Observatory, Jacqueline Caplan-Auerbach, F. Duennebier
Geology Faculty Publications
The Hawai'i Undersea Geo-Observatory (HUGO) is an ocean bottom observatory located on the summit of Lo'ihi seamount, Hawai'i. An electro-optical cable connects the HUGO junction box to a shore station on the Big Island of Hawaii, thereby enabling the first real-time monitoring of a submarine volcano. HUGO was active for 3 months in 1998, collecting nearly continuous, real-time data on a high-rate hydrophone. Signals detected during that time include local as well as teleseismic earthquakes, T phases from Pacific-wide earthquakes, landslides on the submarine flank of Kilauea, and eruption sounds from the current Kilauea eruption. The data do not indicate …
Hydroacoustic Detection Of Submarine Landslides On Kilauea Volcano, Jacqueline Caplan-Auerbach, Christopher G. Fox, Frederick K. Duennebier
Hydroacoustic Detection Of Submarine Landslides On Kilauea Volcano, Jacqueline Caplan-Auerbach, Christopher G. Fox, Frederick K. Duennebier
Geology Faculty Publications
Landslides produced at the site where lava flows into the ocean at Kilauea volcano have been detected hydroacoustically. Up to 10 landslides per day were detected by a hydrophone on the Hawaii Undersea Geo-Observatory (HUGO), located 50 km south of the entry site. The largest of these landslides, partly subaerial events known as bench collapses, were detected by a network of hydrophones in the eastern Pacific, 5000–7000 km away from the source. The landslides display a characteristic spectral signature easily recognizable among other signals such as earthquake T-phases and anthropogenic noises. The fact that signals are detected at great distances …
The Palaeomagnetism Of Lesbos, Ne Aegean, And The Eastern Mediterranean Inclination Anomaly, Myrl E. Beck Jr., Russ R. Burmester, Despina P. Kondopoulou, Artemios Atzemoglou
The Palaeomagnetism Of Lesbos, Ne Aegean, And The Eastern Mediterranean Inclination Anomaly, Myrl E. Beck Jr., Russ R. Burmester, Despina P. Kondopoulou, Artemios Atzemoglou
Geology Faculty Publications
Palaeomagnetic results for 44 sites in 16-22 Ma volcanic rocks from Lesbos, NE Aegean, yield a mean pole at 81.8ºN, 178.1º E, K = 9.0, A95 = 7.6º. The mean direction for these sites (D =4.3º, I = 48.5º, k = 10.8, α 95 = 6.9º) is 5.9º +/- 6.1º shallower than the reference direction for Miocene Lesbos calculated from Besse & Courtillot (1991). Combining these new data with previous work yields a mean inclination that is 5.6º +/- 4.7º too shallow. Experimental problems, magnetic anisotropy, the magnetic terrain effect, geomagnetic anomalies, and problems with the reference path …
Seismicity And Velocity Structure Of Loihi Seamount From The 1996 Earthquake Swarm, Jacqueline Caplan-Auerbach, F. K. Duennebier
Seismicity And Velocity Structure Of Loihi Seamount From The 1996 Earthquake Swarm, Jacqueline Caplan-Auerbach, F. K. Duennebier
Geology Faculty Publications
The largest earthquake swarm yet recorded on Loihi submarine volcano took place in July and August of 1996. The swarm consisted of two phases of seismic activity and was associated with the formation of a pit crater and additional faulting of Loihi’s summit platform. The first phase of activity was comprised of predominantly high-frequency events scattered over the southern flanks of the volcano. Following a day of seismic quiescence, the second phase of activity began, consisting of lower-frequency earthquakes with strong T-phases. The phase 2 events took place beneath Loihi’s summit, presumably marking the formation of the pit crater, Pele’s …
Longshore Sediment Transport As A Function Of Energy Dissipation, Ernest R. Smith, Ping Wang
Longshore Sediment Transport As A Function Of Energy Dissipation, Ernest R. Smith, Ping Wang
Geology Faculty Publications
Experiments to measure waves, currents, and sediment transport rate for two breaker types, plunging and spilling, were conducted in a large-scale three-dimensional physical model. It was found that there was a large difference in cross-shore distribution and total sediment transport rate between the two breaker types. Total transport rates compared to existing predictive equations. The equations generally did not predict the data well. With the exception of the Kamphuis (1991) equation, which included a dependence on wave period, the predictive equations did not differentiate between breaker types.