Global CO2 emission from volcanic lakes
| Autor: | M. Carmencita Arpa, Fátima Rodríguez, Germán D. Padilla, Kenji Notsu, José Barrancos, Paolo Reniva, Martha Ibarra, Gladys V. Melián, Pedro A. Hernández, Nemesio M. Pérez, Samara Dionis, Eleazar Padrón, Toshiya Mori, Minoru Kusakabe, Dácil Nolasco, David Calvo |
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| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Geology. 39:235-238 |
| ISSN: | 1943-2682 0091-7613 |
| DOI: | 10.1130/g31586.1 |
| Popis: | The global CO 2 discharge from subaerial volcanism has been estimated at ~300 Mt yr –1 . However, estimates of CO 2 emissions from volcanic lakes have not been considered. In order to improve this information, extensive research on CO 2 emissions of volcanic lakes worldwide has been performed. The observed normalized average CO 2 emission rates increase from alkaline (5.5 t km –2 d –1 ), to neutral (201.2 t km –2 d –1 ), to acid (614.2 t km –2 d –1 ) in volcanic lakes. Taking into account (1) normalized CO 2 emission rates, (2) the number of volcanic lakes in the world (~769), and (3) the fraction and average areas of the investigated alkaline, neutral, and acid volcanic lakes, the estimated global CO 2 emission from volcanic lakes is 117 ± 19 Mt yr –1 , with 94 ± 17 Mt yr –1 as deep-seated CO 2 . This study highlights the importance of a revision of the actual global CO 2 discharge from subaerial volcanism. |
| Databáze: | OpenAIRE |
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