Готові списки джерел за темами / Lake microseisms

Добірка наукової літератури з теми "Lake microseisms"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 28 січня 2023

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Статті в журналах з теми "Lake microseisms"

1

Kerman, Bryan R., and Robert F. Mereu. "Wind‐induced microseisms from Lake Ontario." Atmosphere-Ocean 31, no. 4 (December 1993): 501–16. http://dx.doi.org/10.1080/07055900.1993.9649483.

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2

Smalls, Paris T., Robert A. Sohn, and John A. Collins. "Lake‐Bottom Seismograph Observations of Microseisms in Yellowstone Lake." Seismological Research Letters 90, no. 3 (April 3, 2019): 1200–1208. http://dx.doi.org/10.1785/0220180242.

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3

TSUTSUI, Tomoki, and Yoshimasa KOBAYASHI. "Discontinuity of basement rock depth in the eastern coast of lake Biwa discovered by observations of microseisms." Journal of Physics of the Earth 37, no. 2 (1989): 133–46. http://dx.doi.org/10.4294/jpe1952.37.133.

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4

Gu, Y. J., and L. Shen. "Microseismic Noise from Large Ice-Covered Lakes?" Bulletin of the Seismological Society of America 102, no. 3 (June 1, 2012): 1155–66. http://dx.doi.org/10.1785/0120100010.

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5

Xu, Yan, Keith D. Koper, and Relu Burlacu. "Lakes as a Source of Short-Period (0.5-2 s) Microseisms." Journal of Geophysical Research: Solid Earth 122, no. 10 (October 2017): 8241–56. http://dx.doi.org/10.1002/2017jb014808.

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6

Stevenson, Donald A., and James D. Agnew. "Lake Charles, Louisiana, earthquake of 16 October 1983." Bulletin of the Seismological Society of America 78, no. 4 (August 1, 1988): 1463–74. http://dx.doi.org/10.1785/bssa0780041463.

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Abstract On 16 October 1983, at 19:40 (UTC), a magnitude 3.8 earthquake occurred near Lake Charles in southwestern Louisiana. The earthquake was felt over an area of 2600 km2 and had a maximum Modified Mercalli intensity of V. This was the first significant Louisiana Gulf Coast earthquake to be recorded and located by nearby microseismic networks. One possible foreshock and three aftershocks also were recorded and located using a velocity model developed for this study. The focal mechanism of the earthquake was determined based on P-wave first motions from 22 local and regional stations. The solution indicates a predominantly east-west trending, southeast-dipping normal fault with a small strike-slip component. The depth of this event (14+ km) provides the first significant evidence that normal faulting within the crystalline basement may control shallower growth faults along the Gulf Coast.
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7

Sokos, E., V. E. Pikoulis, E. Z. Psarakis, and A. Lois. "THE APRIL 2007 SWARM IN TRICHONIS LAKE USING DATA FROM A MICROSEISMIC NETWORK." Bulletin of the Geological Society of Greece 43, no. 4 (January 25, 2017): 2183. http://dx.doi.org/10.12681/bgsg.11409.

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A series of strong earthquakes took place at the Trichonis lake area, during April 2007. Three events, with M~5.0 occurred within one day, causing damages to almost all nearby villages and especially at the small town of Thermo. The sequence lasted for more than one month with small to moderate size events. It was recorded by regional networks and results related to its time and space evolution have already been published. Just after the major events a microseismic network was deployed in the area, by the University of Patras, Seismology Laboratory. Eight stations were installed, with short period, three component sensors and portable digital recorders. The network was in operation for a period of one month and a lot of events were recorded by enough stations to provide a reliable location. We present here the analysis of these data using modern methodologies like waveform cross-correlation techniques and further relocation of the events using waveform based differential time. The results partially support the findings of the regional networks, as regards the gross characteristics of the aftershock sequence, but provide an enhanced description of it. The space time evolution of the aftershock sequence reveals the activation of more than one fault in the area and suggests the connection of the sequence with an unmapped fault.
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8

Smith, Ellen M., Hilary R. Martens, and Michael C. Stickney. "Microseismic Evidence for Bookshelf Faulting in Western Montana." Seismological Research Letters 92, no. 2A (January 20, 2021): 802–9. http://dx.doi.org/10.1785/0220200321.

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Abstract One of the most seismically active regions in the United States, located hundreds of kilometers inland from the nearest plate boundary, is the Intermountain Seismic Belt (ISB). The 6 July 2017 M 5.8 earthquake occurred 11 km southeast of Lincoln, Montana, within the ISB. This was the largest earthquake to rupture in the state of Montana since the 1959 M 7.3 Hebgen Lake earthquake. We use continuous seismic data from the University of Montana Seismic Network, the Montana Regional Seismic Network, and the U.S. Geological Survey to investigate the Lincoln aftershock sequence and to evaluate crustal stress conditions. We manually picked P- and S-wave arrival times, computed 4110 hypocenter locations and 2336 double-difference relocations, and generated focal mechanisms for 414 aftershocks (12+ polarities) in the 2 yr following the mainshock. Based on the alignment of aftershocks, we infer that the mainshock occurred on a north–northeast-trending left-lateral strike-slip fault. The orientation of the fault is unexpected, given that it strikes nearly perpendicular to the prominent Lewis and Clark line (LCL) faults in the area. Although most aftershocks concentrate near the mainshock, several distinct clusters of microseismic activity emerge along subparallel faults located primarily to the west of the mainshock. The subparallel faults also exhibit left-lateral strike-slip motion oblique to the LCL. We postulate that the aftershocks reveal the clockwise rotation of local-scale crustal blocks about vertical axes within a larger, right-lateral shear zone. The inferred block rotations are consistent with a bookshelf-faulting mechanism, which likely accommodates differential crustal motion to the north and south of the LCL region. The tension axes of well-constrained focal mechanisms indicate local northeast–southwest extension with a mean direction of N60°E.
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9

Anthony, R. E., A. T. Ringler, and D. C. Wilson. "The Widespread Influence of Great Lakes Microseisms Across the Midwestern United States Revealed by the 2014 Polar Vortex." Geophysical Research Letters 45, no. 8 (April 20, 2018): 3436–44. http://dx.doi.org/10.1002/2017gl076690.

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10

Bogoyavlensky, V. I., G. N. Erokhin, R. A. Nikonov, I. V. Bogoyavlensky, and V. M. Bryksin. "Study of catastrophic gas blowout zones in the Arctic based on passive microseismic monitoring (on the example of Lake Otkrytiye)." Arctic: Ecology and Economy, no. 1(37) (March 2020): 53–64. http://dx.doi.org/10.25283/2223-4594-2020-1-53-64.

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Дисертації з теми "Lake microseisms"

1

Caudron, Corentin. "Multi-disciplinary continuous monitoring of Kawah Ijen volcano, East Java, Indonesia." Doctoral thesis, Universite Libre de Bruxelles, 2013. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209416.

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Анотація:
Kawah Ijen (2386 m) is a stratovolcano located within Ijen Caldera, at the easternmost

part of Java island in Indonesia. Since 2010, the volcano has been equipped with seismometers

and several sensors (temperature and level) have been immersed in its acidic lake waters and in the acidic river seeping on the volcano flanks. While finding instruments capable of resisting to such extreme conditions (pH~0) has been challenging, the coupling of lake monitoring techniques with seismic data improves the knowledge of the volcanic-hydrothermal dynamics. Moreover, the monitoring capabilities have been considerably

enhanced supporting the decision-making of the authorities in case of emergency.

Several methods and processing techniques were used to analyze the seismic data. Much effort has been given to implement the seismic velocities (Moving Window Cross Spectral Analysis (MWCSA)) calculations. At Kawah Ijen, the frequency band that is less affected by the volcanic tremor and the seasonal fluctuations at the source ranges between 0.5-1.0 Hz. Moreover, a stack of 5 days for the current CCF gives reliable results with low errors and allows to detect fluctuations which are missed using a 10-day stack.

The background seismic activity mostly consists in low frequency events and a continuous tremor of low amplitude. Fluctuations of the lake temperature and level result from the recharge of the hydrothermal system during the rainy season. Kawah Ijen lake waters are not perfectly mixed and a shallow stratification occurs during the rainy season, because meteoric waters are less dense than the lake fluids.

Different unrest occurred during our study. Some of them strongly affected the volcanic lake, while others did only weakly. In the first category, a strong unrest commenced in October 2011 with heightened VT (Volcano Tectonic) earthquakes and low frequency events activity, which culminated mid-December 2011. This unrest was correlated with an enhanced heat and hydrothermal fluids discharge to the crater and significant variations of the relative velocities (~1%). This suggests an important build-up of stress into the system. VT earthquakes opened pathways for the fluids to ascend, by increasing the permeability of the system, which latter allowed the initiation of monochromatic tremor (MT) when the steam/gases interacted with the shallow portions of the aquifer. Our calculations evidence a higher contribution of steam in March 2012 that might explain the increase of the MT frequency when bubbles were observed at the lake surface. This period was also characterized by short-lived but strong velocity variations, related to water level

rises containing important amount of bubbles, and important heat and mass discharges

into the lake. On the contrary, the second category of unrest did only slightly affect the

lake system. This could be explained by a dryer hydrothermal system and/or locations of

the seismic sources, which were not directly linked to the lake.

While a magmatic eruption will likely be preceded by a strong seismic activity, the major challenges remain to understand why the unrest we studied did not lead to an eruption and to identify precursory signs of a phreatic eruption. Even a small phreatic eruption would be devastating for the people working everyday in the crater and the ones

who live nearby the voluminous acidic lake.
Doctorat en Sciences
info:eu-repo/semantics/nonPublished

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Книги з теми "Lake microseisms"

1

Ratcliffe, Nicholas M. Bedrock geology and seismotectonics of the Oscawana Lake Quadrangle, New York. [Washington]: U.S. G.P.O., 1992.

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2

Chen, Shengzao. Further study on source parameters at Quirke Mine, Elliot Lake, Ontario. Ottawa: Mining Research Laboratory, 1991.

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Тези доповідей конференцій з теми "Lake microseisms"

1

Khogoeva, E. E. "DYNAMICS OF THE EMISSION RESPONSE OF THE GEOLOGICAL MEDIUM ACCORDING TO MARINE SEISMIC DATA." In All-Russian Youth Scientific Conference with the Participation of Foreign Scientists Trofimuk Readings - 2021. Novosibirsk State University, 2021. http://dx.doi.org/10.25205/978-5-4437-1251-2-83-86.

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The present work is devoted to the study of the process of the induced emission of microseisms in an oil reservoir after the passage of elastic waves through it from shotpoint oscillations during seismic exploration. Based on the example of marine seismic data, proven the absence of spectral anomalies of microseisms at the beginning of the traces, before the arrival of waves from the source, and the occurrence of anomalies of medium-frequency microseisms in the 17–23 Hz range at late times of the seismic gathers, after the passage of reflected and multiple waves, were established. The position of the zones of increased emission of microseisms corresponds to oil deposits. In the case of producted oil field, the emission of microseisms is observed, decaying in time, until the end of the recording.
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2

Kerman, Bryan R., Robert F. Mereu, and Denis Roy. "Wind-induced Microseisms from Large Lakes." In Proceedings of the III International Meeting on Natural Physical Processes Related to Sea Surface Sound. WORLD SCIENTIFIC, 1996. http://dx.doi.org/10.1142/9789814447102_0010.

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