Disaster management

Fountains of lava erupted from the Sundhnúkur volcanic system in southwest Iceland on Jan. 14, 2024. As the world watched on webcams and social media, lava flows cut off roads and bubbled from a new fissure that invaded the outskirts of the coastal town of Grindavík, burning down at least three houses in their path. Nearby, construction vehicles that had been working for weeks to build large earthen dams and berms in an attempt to divert the lava’s flow had to pull back. The lava flow on Jan. 14, 2024, with Grindavík in the foreground. Iceland Department of Civil Protection Humans have tried many ways to stop lava in the past, from attempting to freeze it in place by cooling it with sea water, to using explosives to disrupt its supply, to building earthen barriers. It’s too soon to say if Iceland’s earthworks will succeed in saving Grindavík, a town of about 3,...

If you want to track changes in the Amazon rainforest, see the full expanse of a hurricane or figure out where people need help after a disaster, it’s much easier to do with the view from a satellite orbiting a few hundred miles above Earth. Traditionally, access to satellite data has been limited to researchers and professionals with expertise in remote sensing and image processing. However, the increasing availability of open-access data from government satellites such as Landsat and Sentinel, and free cloud-computing resources such as Amazon Web Services, Google Earth Engine and Microsoft Planetary Computer, have made it possible for just about anyone to gain insight into environmental changes underway. I work with geospatial big data as a professor. Here’s a quick tour of where you can find satellite images, plus some free, fairly simple tools that anyone can use to create time-lapse animations from satellite images. For example, state and urban planners –...

As mandatory evacuations for Hurricane Ian began in Florida and the warnings about damaging wind and flooding intensified, I called my aging parents to check in. Being a disaster researcher, my concern for them was already in high gear, even though they weren’t directly in an evacuation zone. My dad takes medications that require refrigeration, special needles and a sterile environment to administer. My mom is in the early stages of dementia. Both are not as spry as they used to be. I heard the worry in their voice about their safety, about my dad’s health needs, and about what might happen to their house. As I sat at home hundreds of miles away, I thought about all the reasons why leaving isn’t always a clear decision. Concerns about health and home security are two reasons older adults might fear evacuating during disasters like Hurricane Harvey in 2017. Scott Olson/Getty Images...