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Surface latent heat flux anomalies before the MS 7.1 New Zealand earthquake 2010
Author(s)
Language
English
Obiettivo Specifico
1.7. Osservazioni di alta e media atmosfera
1.10. TTC - Telerilevamento
3.1. Fisica dei terremoti
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
31/56 (2011)
Publisher
Springer
Pages (printed)
3273-3280
Issued date
November 2011
Abstract
By analyzing surface latent heat flux (SLHF) data from the NCEP/NCAR Reanalysis Project for the period three months before and after the Sept. 3, 2010 MS 7.1 New Zealand earthquake, an isolated SLHF positive anomaly on Aug. 1, 2010 was found with a
high value of about 160 W/m2 to the northeast of the epicenter. Historical data, background pixels, and wavelet transforms of time series were comprehensively analyzed to study the spatiotemporal features of the SLHF anomaly. After removing the influences
of wind speed and cloud cover, the key factor leading to local SLHF anomalies is the surface temperature increment. Combined
with GPS displacement observations and tectonic settings, we determined that the physical mechanism of the SLHF anomaly could possibly be attributed to hot underground materials related to high-temperature and high-pressure upwelling from the deep crust and mantle along the nearby subduction zone, thereby explaining the local temperature increment to the northeast of the epicenter, as well as in the center of the North Island and the southwest of the South Island. Furthermore, it changed the specific humidity between the ground and surface air, causing the local SLHF increment.
high value of about 160 W/m2 to the northeast of the epicenter. Historical data, background pixels, and wavelet transforms of time series were comprehensively analyzed to study the spatiotemporal features of the SLHF anomaly. After removing the influences
of wind speed and cloud cover, the key factor leading to local SLHF anomalies is the surface temperature increment. Combined
with GPS displacement observations and tectonic settings, we determined that the physical mechanism of the SLHF anomaly could possibly be attributed to hot underground materials related to high-temperature and high-pressure upwelling from the deep crust and mantle along the nearby subduction zone, thereby explaining the local temperature increment to the northeast of the epicenter, as well as in the center of the North Island and the southwest of the South Island. Furthermore, it changed the specific humidity between the ground and surface air, causing the local SLHF increment.
References
1 Dey S, Singh R P. Nat Hazards Earth Sys, 2003, 3: 749–755
2 Chen M H, Deng Z H, Yang Z Z, et al. Chinese Sci Bull, 2005, 51:
1010–1013
3 Singh R P, Cervone G, Kafatos M, et al. Int J Remote Sensing, 2007,
31: 2885–2896
4 Li J P, Wu L X, Wen Z Y, et al. Sci Tech Rev, 2008, 26: 40–44
5 Qin K, Guo G M, Wu L X. Earthq Sci 2009, 22: 555–562
6 Qin K, Wu L X, Ma W Y. Sci Tech Rev, 2010, 28: 68–73
7 Cervone G, Singh R P, Kafatos M, et al. Nat Hazards Earth Syst Sci,
2005, 5: 87–99
8 Nikitas P, Guido C, Fotini P, et al. Physica A, 2006, 371: 703–718 9 Chen S Y, Liu P X, Liu L Q, et al. Chin J Geophys, 2006, 49:
824–830
10 Zhang Y S, Guo X, Zhong M J, et al. Chinese Sci Bull, 2010, 55:
1917–1924
11 Liu W T, Katsaros K B, Businger J A. J Atmos Sci, 1979, 36:
1722–1735
12 Shi Y L, Fan T Y. Chin J Geophys, 2001, 44: 754–760
13 Wallace L M, Beavan J, McCaffrey R, et al. Geophys J Int, 2007, 168:
332–352
14 Wu L X, Liu S J. Advances in Geosciences & Remote Sensing.
Sweden: In-Teh, 2009. 709–741
2 Chen M H, Deng Z H, Yang Z Z, et al. Chinese Sci Bull, 2005, 51:
1010–1013
3 Singh R P, Cervone G, Kafatos M, et al. Int J Remote Sensing, 2007,
31: 2885–2896
4 Li J P, Wu L X, Wen Z Y, et al. Sci Tech Rev, 2008, 26: 40–44
5 Qin K, Guo G M, Wu L X. Earthq Sci 2009, 22: 555–562
6 Qin K, Wu L X, Ma W Y. Sci Tech Rev, 2010, 28: 68–73
7 Cervone G, Singh R P, Kafatos M, et al. Nat Hazards Earth Syst Sci,
2005, 5: 87–99
8 Nikitas P, Guido C, Fotini P, et al. Physica A, 2006, 371: 703–718 9 Chen S Y, Liu P X, Liu L Q, et al. Chin J Geophys, 2006, 49:
824–830
10 Zhang Y S, Guo X, Zhong M J, et al. Chinese Sci Bull, 2010, 55:
1917–1924
11 Liu W T, Katsaros K B, Businger J A. J Atmos Sci, 1979, 36:
1722–1735
12 Shi Y L, Fan T Y. Chin J Geophys, 2001, 44: 754–760
13 Wallace L M, Beavan J, McCaffrey R, et al. Geophys J Int, 2007, 168:
332–352
14 Wu L X, Liu S J. Advances in Geosciences & Remote Sensing.
Sweden: In-Teh, 2009. 709–741
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