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Aumento del ciclo del metano terrestre en el máximo térmico del Paleoceno-Eoceno
Richard D Pancost1, David S Steart, Luke Handley
1Organic Geochemistry Unit, Bristol Biogeochemistry Research Centre, School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK. r.d.pancost@bristol.ac.uk
Nature
|September 21, 2007
Resumen
El evento de calentamiento del Máximo Térmico Paleoceno-Eoceno (PETM) puede haber sido amplificado por el aumento de la liberación de metano de los humedales terrestres. Los biomarcadores bacterianos indican un aumento en la producción de metano, lo que sugiere un ciclo de retroalimentación positiva durante este antiguo período de calentamiento global.
Área de la Ciencia:
- Paleoclimatología Paleoclimatología
- Biogeoquímica La biogeoquímica es la bioquímica.
- Ciencias del medio ambiente Ciencias del medio ambiente.
Sus antecedentes:
- El Máximo Térmico Paleoceno-Eoceno (PETM) fue un período de rápido calentamiento global hace aproximadamente 55 millones de años.
- Se cree que el principal impulsor es un aumento en los gases de efecto invernadero, con la disociación del hidrato de metano como hipótesis principal.
- Investigaciones anteriores sugirieron que las emisiones terrestres de metano podrían exacerbar el calentamiento, pero la evidencia directa de los humedales era escasa.
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