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Do the 2010 Haiti and Chile earthquakes and tsunamis indicate increasing trends?

Do the 2010 Haiti and Chile earthquakes and tsunamis indicate increasing trends? Geomatics, Natural Hazards and Risk Vol. 2, No. 1, March 2011, 94 Corrigendum Do the 2010 Haiti and Chile earthquakes and tsunamis indicate increasing trends? PAULA DUNBAR*, KELLY STROKER and HEATHER MCCULLOUGH National Oceanic and Atmospheric Administration, National Geophysical Data Center, World Data Center for Geophysics and Marine Geology, NOAA E/GC3, 325 Broadway, Boulder, CO 80305-3328, USA In the above paper, published in Geomatics, Natural Hazards and Risk, Vol. 1, No. 2 (June 2010), pp. 95–114, the authors have found errors in the third and fifth sentences of section 9 on page 110 and the graph in figure 14 on page 111. The figure should be replaced with the figure below and the paragraph should read: The NGDC/WDC tsunami database includes all tsunami events, regardless of wave height or effects. Since the written record is fairly complete from 1701 onward, figure 14 provides a count of tsunamis for 10-year periods from 1701 to the present. There is an increase from an average of 20 tsunamis every 10 years prior to 1841 to an average of 85 tsunamis every 10 years since that time. This is probably due to the increase in observations and awareness of tsunamis. For example, by the mid 19th century many large ports had installed the self-registering tide gauge. Today, if an earthquake or some other tsunami source generates a wave of a few centimetres that is only observed in the deep ocean at a DART station, it is considered a tsunami and is added to the database. Earlier it was impossible, but now with the deployment of DART s such information is available. In addition, the identification of a tsunami signature from tide gauge information requires higher-resolution data that is usually collected for tide predictions. In the past 5 years many tide stations have been upgraded from 6-minute dissemination of water level data to 1 minute. This enhancement allows scientists to observe small tsunamis that would have been missed in the past. Figure 14. Count of all tsunamis for ten-year periods from 1701 to the present. Source: National Geophysical Data Center/World Data Center. Geomatics, Natural Hazards and Risk ISSN 1947-5705 Print/ISSN 1947-5713 Online ª 2011 Taylor & Francis http://www.tandf.co.uk/journals DOI: 10.1080/19475705.2011.558719 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Geomatics, Natural Hazards and Risk" Taylor & Francis

Do the 2010 Haiti and Chile earthquakes and tsunamis indicate increasing trends?

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Publisher
Taylor & Francis
Copyright
Copyright Taylor & Francis Group, LLC
ISSN
1947-5713
eISSN
1947-5705
DOI
10.1080/19475705.2011.558719
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Abstract

Geomatics, Natural Hazards and Risk Vol. 2, No. 1, March 2011, 94 Corrigendum Do the 2010 Haiti and Chile earthquakes and tsunamis indicate increasing trends? PAULA DUNBAR*, KELLY STROKER and HEATHER MCCULLOUGH National Oceanic and Atmospheric Administration, National Geophysical Data Center, World Data Center for Geophysics and Marine Geology, NOAA E/GC3, 325 Broadway, Boulder, CO 80305-3328, USA In the above paper, published in Geomatics, Natural Hazards and Risk, Vol. 1, No. 2 (June 2010), pp. 95–114, the authors have found errors in the third and fifth sentences of section 9 on page 110 and the graph in figure 14 on page 111. The figure should be replaced with the figure below and the paragraph should read: The NGDC/WDC tsunami database includes all tsunami events, regardless of wave height or effects. Since the written record is fairly complete from 1701 onward, figure 14 provides a count of tsunamis for 10-year periods from 1701 to the present. There is an increase from an average of 20 tsunamis every 10 years prior to 1841 to an average of 85 tsunamis every 10 years since that time. This is probably due to the increase in observations and awareness of tsunamis. For example, by the mid 19th century many large ports had installed the self-registering tide gauge. Today, if an earthquake or some other tsunami source generates a wave of a few centimetres that is only observed in the deep ocean at a DART station, it is considered a tsunami and is added to the database. Earlier it was impossible, but now with the deployment of DART s such information is available. In addition, the identification of a tsunami signature from tide gauge information requires higher-resolution data that is usually collected for tide predictions. In the past 5 years many tide stations have been upgraded from 6-minute dissemination of water level data to 1 minute. This enhancement allows scientists to observe small tsunamis that would have been missed in the past. Figure 14. Count of all tsunamis for ten-year periods from 1701 to the present. Source: National Geophysical Data Center/World Data Center. Geomatics, Natural Hazards and Risk ISSN 1947-5705 Print/ISSN 1947-5713 Online ª 2011 Taylor & Francis http://www.tandf.co.uk/journals DOI: 10.1080/19475705.2011.558719

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"Geomatics, Natural Hazards and Risk" – Taylor & Francis

Published: Mar 1, 2011

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