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Alka Tripathy-Lang

Alka Tripathy-Lang is a freelance science writer covering stories about Earth and environmental science. Alka holds a Ph.D. in geology from Arizona State University and conducted postdoctoral research at the Berkeley Geochronology Center.

Foto de Kristin Jónsdóttir, la sismóloga de la Oficina Meteorológica de Islandia al frente, con Fagradalsfjall haciendo erupción detrás. A medida que lava naranja sale de pequeño cráter, humo anarajandizo sube al aire. El fondo de basalto negro solidificado brilla en rojo.
Posted inNews

Persiguiendo magma por la península de Reykjanes en Islandia

by Alka Tripathy-Lang 30 June 202119 July 2023

La Oficina Meteorológica de Islandia ha estado rastreando la agitación cerca de la erupción de Fagradalsfjall desde diciembre de 2019, mientras que investigadores en otros lugares exploran nuevos métodos para ver los enjambres sísmicos de Islandia.

Screenshot of Robert Ballard sitting at his command center during a Zoom interview. Behind him, several computer screens show images from his explorations, including of the Nautilus, his state-of-the-art ship, the bow of the Titanic, and giant tube worms.
Posted inGeoFIZZ

A Life at Sea: A Q&A with Robert Ballard

by Alka Tripathy-Lang 16 June 202114 January 2022

A new memoir from the famed explorer dives into his underwater discoveries, his life with dyslexia, and the importance of communicating with the public.

Grayscale scanning electron microscope image of an unpolished tetrahedral zircon crystal with two laser ablation pits, each between 25 and 30 micrometers in diameter
Posted inNews

Vestiges of a Volcanic Arc Hidden Within Chicxulub Crater

by Alka Tripathy-Lang 15 June 202113 September 2025

Scientists discovered magmatic remnants of a volcanic arc by dating granitic rocks of the middle crust excavated by, and hidden within, the Chicxulub impact crater.

Photo of Icelandic Meteorological Office seismologist Kristín Jónsdóttir in the foreground, with erupting Fagradalsfjall in the background. As bright orange lava spills out of the small crater and flows behind her, eerie orange-tinged smoke billows into the air. The ground of solidified black basalt glows red.
Posted inNews

Chasing Magma Around Iceland’s Reykjanes Peninsula

by Alka Tripathy-Lang 25 May 202119 July 2023

The Icelandic Meteorological Office has been tracking unrest near erupting Fagradalsfjall since December 2019, while researchers elsewhere explore new methods to see Iceland’s seismic swarms.

Fotografía de un plastiglomerado, una roca hecha por piezas de basura y otros detritos naturales. Este ejemplo incluye piezas blancas, verdes y una cuerda amarilla mezclados con sedimento.
Posted inNews

La dificultad de definir el Antropoceno

by Alka Tripathy-Lang 20 May 20218 October 2021

Los humanos pueden estar en una nueva época geológica, el Antropoceno, pero diferentes grupos definen su comienzo en diferentes momentos. ¿Cuándo debería haber comenzado el Antropoceno?

Outlines of Lesser Antilles islands and Barbados placed on top of satellite imagery of the Caribbean showing both white meteorological clouds and a plume of brown volcanic ash.
Posted inNews

Eyeing Explosive Ash Clouds from Above and Below

by Alka Tripathy-Lang 5 May 20217 September 2022

Satellites in the sky combined with computers on the ground detect and track volcanic ash clouds, like those produced by Soufrière St. Vincent in April, in near-real time.

Photograph of a plastiglomerate, a rock made from pieces of trash and other natural debris. This example includes pieces of white, green, and yellow rope intermingled with sediment.
Posted inNews

The Difficulty of Defining the Anthropocene

by Alka Tripathy-Lang 29 March 202122 August 2023

Humans may be in a new geologic epoch—the Anthropocene—but different groups define its start at varied times. When should the Anthropocene have begun?

Satellite image of Earth focused on the Arctic
Posted inNews

How Geodynamo Models Churn the Outer Core

by Alka Tripathy-Lang 16 February 20214 October 2021

New simulations of Earth’s outer core have reproduced magnetic fields that—for the first time—match paleomagnetic data collected from rocks.

Aerial photograph of the Xin’an River Hydropower Station showing the dam that forms Qiandao Lake releasing flood waters into the river below.
Posted inNews

Finding “Glocal” Solutions to Flooding Problems

by Alka Tripathy-Lang 3 February 202120 May 2022

Scientists call for joint efforts to combine real-time global rainfall data with high-resolution local hydrology to better forecast floods.

Satellite image of the island of Mayotte and its surrounding fringing reef
Posted inNews

New Volcano, Old Caldera

by Alka Tripathy-Lang 15 December 20206 September 2022

Researchers suggest a magma chamber sits within an old submarine caldera structure that extends into the mantle. Nearby, a new underwater volcano emerged with a flurry of seismicity.

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