Rapid determination of earthquake magnitude using GPS for tsunami warning systems

Blewitt, G.; Kreemer, C.; Hammond, W. C.; Plag, H.; Stein, Seth; Okal, Emile A.

doi:10.1029/2006gl026145

Cited by 210 publications

(129 citation statements)

References 22 publications

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“…Besides the ability to provide position with accuracy from few meters to few centimetres, or even millimetres, depending on the chosen technique, GNSS also allows one to study physical phenomena in different fields of Earth sciences (Shimada et al 1990;Bevis et al 1992;Frezzotti et al 1998;Blewitt et al 2006;Larson 2009).…”

Section: Introductionmentioning

confidence: 99%

L-band scintillations and calibrated total electron content gradients over Brazil during the last solar maximum

Cesaroni

Spogli

Alfonsi

et al. 2015

J. Space Weather Space Clim.

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This work presents a contribution to the understanding of the ionospheric triggering of L-band scintillation in the region over São Paulo state in Brazil, under high solar activity. In particular, a climatological analysis of Global Navigation Satellite Systems (GNSS) data acquired in 2012 is presented to highlight the relationship between intensity and variability of the total electron content (TEC) gradients and the occurrence of ionospheric scintillation. The analysis is based on the GNSS data acquired by a dense distribution of receivers and exploits the integration of a dedicated TEC calibration technique into the Ground Based Scintillation Climatology (GBSC), previously developed at the Istituto Nazionale di Geofisica e Vulcanologia. Such integration enables representing the local ionospheric features through climatological maps of calibrated TEC and TEC gradients and of amplitude scintillation occurrence. The disentanglement of the contribution to the TEC variations due to zonal and meridional gradients conveys insight into the relation between the scintillation occurrence and the morphology of the TEC variability. The importance of the information provided by the TEC gradients variability and the role of the meridional TEC gradients in driving scintillation are critically described.

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Section: Introductionmentioning

confidence: 99%

L-band scintillations and calibrated total electron content gradients over Brazil during the last solar maximum

Cesaroni

Spogli

Alfonsi

et al. 2015

J. Space Weather Space Clim.

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“…The Sumatra Earthquake of 26 December 2004 caused severe hazard in different countries and revealed the importance and need of warning systems to minimize the casualties. The high quality recording of the seismograms of this earthquake at different stations of different countries motivated studies to understand the physical characteristics and develop new methodology (Menke and Levin, 2005;Lomax and Michelini, 2005;Bormann and Welegalla, 2005;Blewitt et al, 2006). Other global tsunamigenic and nontsunamigenic events are also used for testing of the methodology.…”

Section: Data Used and Methodologymentioning

confidence: 99%

Wavelet analysis of the seismograms for tsunami warning

Chamoli

Rani

Srivastava

et al. 2010

Nonlin. Processes Geophys.

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Abstract. The complexity in the tsunami phenomenon makes the available warning systems not much effective in the practical situations. The problem arises due to the time lapsed in the data transfer, processing and modeling. The modeling and simulation needs the input fault geometry and mechanism of the earthquake. The estimation of these parameters and other aprior information increases the utilized time for making any warning. Here, the wavelet analysis is used to identify the tsunamigenesis of an earthquake. The frequency content of the seismogram in time scale domain is examined using wavelet transform. The energy content in high frequencies is calculated and gives a threshold for tsunami warnings. Only first few minutes of the seismograms of the earthquake events are used for quick estimation. The results for the earthquake events of Andaman Sumatra region and other historic events are promising.

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“…Source parameters of a potentially induced tsunami can be estimated with reasonable precision by established seismological (e.g., Lomax et al, 2007) or new GPS techniques (Blewitt et al, 2006;Sobolev et al, 2007). Tsunamigenic landslides, however, are very difficult to identify.…”

Section: Investigating the Possibility For Real-time Detection Of Lanmentioning

confidence: 99%

Landslide tsunami hazard in the Indonesian Sunda Arc

Brune

Babeyko

Ladage

et al. 2010

Nat. Hazards Earth Syst. Sci.

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Abstract. The Indonesian archipelago is known for the occurrence of catastrophic earthquake-generated tsunamis along the Sunda Arc. The tsunami hazard associated with submarine landslides however has not been fully addressed. In this paper, we compile the known tsunamigenic events where landslide involvement is certain and summarize the properties of published landslides that were identified with geophysical methods. We depict novel mass movements, found in newly available bathymetry, and determine their key parameters. Using numerical modeling, we compute possible tsunami scenarios. Furthermore, we propose a way of identifying landslide tsunamis using an array of few buoys with bottom pressure units.

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Rapid determination of earthquake magnitude using GPS for tsunami warning systems

Cited by 210 publications

References 22 publications

L-band scintillations and calibrated total electron content gradients over Brazil during the last solar maximum

L-band scintillations and calibrated total electron content gradients over Brazil during the last solar maximum

Wavelet analysis of the seismograms for tsunami warning

Landslide tsunami hazard in the Indonesian Sunda Arc

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