geology | Platypus

Memorializing Eruption

 Sandra Rozental, Gabriela Zamorano  June 6, 2023

Este contenido también está disponible en español.

Perched on a makeshift stage, a trio dressed in wool ponchos sings pirekuas, the region’s most acclaimed and loved musical genre in a mix of Purépecha and Spanish. Despite their upbeat and soft-sounding melodies, the lyrics of the songs describe a time of fear and destruction when, eighty years ago, the Paricutin, the world’s youngest volcano, emerged from a cornfield and devastated the region. Stallkeepers are busy selling quesadillas, chips, sodas, and beers to the expectant crowd, gathering around a bonfire installed inside a miniature volcano. This contrast between apparently joyful festivities and solemn commemoration marks the evening’s atmosphere in Angahuan, Caltzontzin and San Juan Nuevo in Michoacan, Mexico. Several uniformed and heavily-armed municipality police stand nervously watching the horizon. These days, this is fraught territory, as organized crime groups dispute control over the area. This is also the first time that an event like this is staged on-site at the place known locally as las ruinas , a shorthand for the remains of the old San Juan Parangaricutiro church, the only surviving structure of an entire town buried under the thick and rugged lava. (read more...)

Sinkholes without Borders: Geology, Hydrology, and Conflict Around the Dead Sea

 Simone Popperl  February 24, 2016

In a heavily air-conditioned room in the suburbs of Tel Aviv, Israeli, I spent two days drinking instant coffee and taking notes at a “transboundary” water conference on the Jordan River Watershed. Israeli, American, and Western European scholars and development consultants had come together to seek solutions for a variety of environmental crises plaguing the Jordan River and the Dead Sea, sinkholes chief among them. A single Jordanian policymaker attended, opening the event with an introductory speech, but heading immediately for the door when he finished his presentation. In the hours that followed, workshop participants argued about the trustworthiness of Palestinian water consumers (none of whom were present), the merits of international river commissions, and game theory-based water conservation strategies. One common perspective prevailed: as an American hydrologist put it, “we water people think at the level of the watershed, not the nation.” But what happens when contested national borders create barriers to the production of scientific knowledge about hydrologic and geologic phenomena? In the context of ongoing struggles for self-determination and national recognition, the Dead Sea sinkhole problem—and the different approaches to it—highlight fraught political complexities of the conflict over land in Palestine and Israel. (read more...)

The Earthquake Early Warning System that the West Coast (Almost) Already Has

 Elizabeth Reddy  December 22, 2015

1. West Coast earthquakes People on the West Coast of the U.S. see movies about seismic disaster in their major cities. They read articles about forecasting and safety strategies. They retrofit their buildings, buy insurance, and worry. When I tell them about my research on earthquake early warning systems in Mexico, they ask me, “Why don’t we have something like that here?” Networks of sensors arrayed across territory are set up around the world to register earth motion and send warnings to users speedily enough to warn them seconds or even minutes before the quake hits. Mexico’s was the first to make alerts available to the public almost a quarter of a century ago, and today there are similar systems around the world. The fact is that we are going to have something similar on the West Coast, too, though it depends on how you define “we.” Tremendous strides have been made in the last few years toward in making a demonstration earthquake early warning system called ShakeAlert function across a frankly massive swath of seismic geography. The technology is promising, but the way that it will be used remains troublingly vague. (read more...)

The Environment’s Environment: Are There Limits to the Anthropocene?

 Valerie Olson  June 2, 2015

Today the Anthropocene is everywhere. You may have encountered both scientific and non-scientific articles that begin with this geological greeting: “Welcome to the Anthropocene!” From a geological science perspective, planet Earth—and everything on it—is constantly moving along a timeline, from one distinctive era to another. In 2000, geologists Paul Crutzen and Eugene Stoermer proposed a new name for the current geological epoch: Anthropocene. They argue that this term (which combines the Greek “human” + “new”) should replace ‘Holocene’ (“whole” + “new”) because it best describes an emerging geological condition. Human impact, they explain, is now a wholescale driver of Earthly environmental change. For its many early adopters, the Anthropocene is a welcome scientific and political concept that expands understandings of human-Earth connections. Yet, while the Anthropocene concept is definitely planetary, I would suggest that it is not wholly Earth-bound. What does a closer examination of the term’s conceptual origins reveal about on-the-ground politics of spatial perception in the Anthropocene? Is there a paradox between the Anthropocene as an earthly timescale and geological entanglement with the planet’s own environment? (read more...)