Use of Modern Communication Technologies during Earthquakes: How to Increase the Efficiency of Macroseismic Data Collection

Lukhneva, O. F.; Radziminovich, Ya. B.; Novopashina, A. V.; Kadetova, A. V.

doi:10.1134/s0001433823100067

Cited by 2 publications

(1 citation statement)

References 36 publications

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“…Registered users of the HSIT system can decide for which Italian geographical areas they wish to receive noti cations on local seismicity, consult the archive of responses they have provided and choose whether to be noti ed by e-mail, Telegram app (since 2021) or both. In fact, instant messaging has proven to be an almost ideal tool for providing up-to-date seismological information to the public and for receiving feedback (Lukhneva, 2023).…”

Section: Analysis Of Differences Between Reports From Registered and ...mentioning

confidence: 99%

The importance of on-request reports for the correct assessment of low macroseismic intensities: the experience of "Hai Sentito Il Terremoto"

Sbarra,

Tosi,

De Rubeis

et al. 2024

Preprint

View full text Add to dashboard Cite

The lower degrees of the macroseismic scales are estimated mainly using the diagnostic related to the percentage of people who felt the earthquake (“felt” percentage). However, estimating this percentage by examining only a sub-sample of people may be biased, as those who complete the questionnaires are predominantly those who have felt the earthquake. One way to solve this problem is to send a specific request to them when an earthquake occurs. The 'Hai Sentito il Terremoto' (HSIT) site began implementing this strategy in December 2008 by allowing users to register on the website. Thanks to contributions from registered users, the HSIT database has been populated with "not felt" reports, which since 2009 have outnumbered the “felt” ones. The diagnostics of registered and unregistered users were analysed separately in a sample of municipalities, showing no difference between the two types of users with the exception of “not felt” reports number. Despite the availability of the "not felt" reports, the experimental “not felt” number is still underestimated when compared to those indicated in the Mercalli-Cancani-Sieberg scale. It was therefore necessary to multiply the number of "not felt" reports by a correction factor, estimated to be 6, to properly use the “felt” percentage as a diagnostic effect. The macroseismic intensity and event magnitude do not affect this correction factor. By using both on-request reports and a correction factor it is possible to overcome the problem of underreporting "not felt" reports, more accurately estimate low intensities, and better define the “felt”-“not felt” boundary.

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Section: Analysis Of Differences Between Reports From Registered and ...mentioning

confidence: 99%

The importance of on-request reports for the correct assessment of low macroseismic intensities: the experience of "Hai Sentito Il Terremoto"

Sbarra,

Tosi,

De Rubeis

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

The importance of on-request reports for the correct assessment of low macroseismic intensities: the experience of “Hai Sentito Il Terremoto”

Sbarra,

Tosi,

De Rubeis

et al. 2024

Nat Hazards

View full text Add to dashboard Cite

The lower degrees of the macroseismic scales are estimated mainly using the diagnostic related to the percentage of people who felt the earthquake (“felt” percentage). However, estimating this percentage by examining only a sub-sample of people may be biased, as those who complete the questionnaires are predominantly those who have felt the earthquake. One way to solve this problem is to send a specific request to them when an earthquake occurs. The ‘Hai Sentito il Terremoto’ (HSIT) site began implementing this strategy in December 2008 by allowing users to register on the website. Thanks to contributions from registered users, the HSIT database has been populated with “not felt” reports, which since 2009 have outnumbered the “felt” ones. The diagnostics of registered and unregistered users were analyzed separately in a sample of municipalities, showing no difference between the two types of users with the exception of “not felt” reports number. Despite the availability of the “not felt” reports, the experimental “felt” percentage is still overestimated when compared to those indicated in the Mercalli-Cancani-Sieberg scale. To refine the intensity calculation, the number of ‘not felt’ reports was multiplied by a correction factor, estimated at 6, to correctly use the ‘felt’ percentage. The macroseismic intensity and event magnitude do not affect this correction factor. By using both on-request reports and a correction factor it is possible to overcome the problem of underreporting “not felt” reports, more accurately estimate low intensities, and better define the “felt”-“not felt” boundary.

show abstract

Use of Modern Communication Technologies during Earthquakes: How to Increase the Efficiency of Macroseismic Data Collection

Cited by 2 publications

References 36 publications

The importance of on-request reports for the correct assessment of low macroseismic intensities: the experience of "Hai Sentito Il Terremoto"

The importance of on-request reports for the correct assessment of low macroseismic intensities: the experience of "Hai Sentito Il Terremoto"

The importance of on-request reports for the correct assessment of low macroseismic intensities: the experience of “Hai Sentito Il Terremoto”

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