10.5880/fidgeo.2021.001 Fallou, Laure Laure Fallou 0000-0002-0245-6197 European-Mediterranean Seismological Centre (EMSC), Bruyères-le-Châtel, France Bossu, Rémy Rémy Bossu 0000-0002-9927-9122 European-Mediterranean Seismological Centre (EMSC), Bruyères-le-Châtel, France Steed, Robert Robert Steed 0000-0002-2427-2997 European-Mediterranean Seismological Centre (EMSC), Bruyères-le-Châtel, France Finazzi, Francesco Francesco Finazzi 0000-0002-1295-7657 Department of Management, Information and Production Engineering, University of Bergamo, Dalmine, Italy Bondár, István István Bondár 0000-0002-4892-1074 ELKH Research Centre for Astronomy and Earth Sciences, Geodetic and Geophysical Institute, Budapest, Hungary GFZ Data Services 2021 earthquake early warning seismology social risk communication survey EARTH SCIENCE > HUMAN DIMENSIONS > NATURAL HAZARDS > EARTHQUAKES geological process > seismic activity > earthquake safety > risk assessment > risk communication safety > risk assessment > risk perception safety > risk assessment > risk reduction safety > safety system > warning system > early warning system science > human science > social science > sociology Fallou, Laure Laure Fallou 0000-0002-0245-6197 European-Mediterranean Seismological Centre (EMSC), Bruyères-le-Châtel, France Fallou, Laure Laure Fallou 0000-0002-0245-6197 European-Mediterranean Seismological Centre (EMSC), Bruyères-le-Châtel, France Bossu, Rémy Rémy Bossu 0000-0002-9927-9122 European-Mediterranean Seismological Centre (EMSC), Bruyères-le-Châtel, France Steed, Robert Robert Steed 0000-0002-2427-2997 European-Mediterranean Seismological Centre (EMSC), Bruyères-le-Châtel, France Finazzi, Francesco Francesco Finazzi 0000-0002-1295-7657 Department of Management, Information and Production Engineering, University of Bergamo, Dalmine, Italy Bondár, István István Bondár 0000-0002-4892-1074 ELKH Research Centre for Astronomy and Earth Sciences, Geodetic and Geophysical Institute, Budapest, Hungary Fallou, Laure European-Mediterranean Seismological Centre (EMSC) Bossu, Rémy European-Mediterranean Seismological Centre (EMSC) Fallou, Laure European-Mediterranean Seismological Centre (EMSC) Bossu, Rémy European-Mediterranean Seismological Centre (EMSC) 2021-05-01 2021-02-10 2019-07-23/2019-08-19 Dataset 10.1785/0220210180 10.5880/fidgeo.2021.002 10.5880/fidgeo.2021.007 0.9 CC BY 4.0 The 'Earthquake Network’ (EQN) is an app which detects earthquakes by creating an ad-hoc network of smartphone's accelerometer sensors and provides early warnings of earthquakes via the same smartphone app.

The EMSC (Euro-Mediterranean Seismological Centre) and the University of Bergamo conducted an online survey, following an earthquake of magnitude M8 on 2019-05-26 07:41:13.6 UTC in Northern Peru with epicentre (5.81S, 75.27W). This survey targeted EQN users in the felt area of the earthquakes and was conducted from 2019-07-23 to 2019-08-18. It aimed at assessing users’ understanding and reaction to the EQN early warning for this specific earthquake.

The questionnaire was written in Spanish since it is the most commonly spoken language in the studied area. Individuals who use the app in Spanish were invited to complete the survey via an advertisement on the Earthquake Network app. A PDF containing the questionnaire and the relationship between the questions is included in this archive. 3805 respondents took the survey, including 2 719 that were actually in the area at the time.

The analysis
Results derived from this dataset will be included as part of a submitted Science article (Bossu et al. '“Shaking in 5 seconds!” A Voluntary Smartphone-based Earthquake Early Warning System', 2021) to show that respondents received notifications from the Earthquake Network App before feeling the shaking but also that many did not immediately “drop, hold and cover' and were too intent on warning those close to them of the impending danger. All respondents consented that their data could be used for research purposes. The EMSC and University of Bergamo made sure not to collect or diffuse personal data.

The dataset is a zip-file that contains the questionnaire responses as a comma-separated text file (csv) and a pdf containing a representation of the questionnaire that was presented to respondents.
Online Questionnaire Survey of users of the EQN app in Peru following an M8 earthqauke -82.5952 -68.1372 -18.8543 1.05463 Horizon 2020 Framework Programme http://doi.org/10.13039/100010661 821046 TURNKEY