Grebnev Yaroslav V.
![](assets/images/authors/grebnev-yav.jpg)
postgraduate, Siberian federal university/senior engineer, monitoring and forecasting department, Center for crisis management of the Head office of the Emercom of Russia in the Krasnoyarsk territory
postgraduate, Siberian federal university/senior engineer, monitoring and forecasting department, Center for crisis management of the Head office of the Emercom of Russia in the Krasnoyarsk territory