 |
| Titel |
The natural ocean acidification and fertilization event caused by the submarine eruption of El Hierro |
| VerfasserIn |
J. Magdalena Santana-Casiano, Melchor González-Dávila, Eugenio Fraile-Nuez |
| Konferenz |
EGU General Assembly 2014
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250088557
|
| Publikation (Nr.) |
 EGU/EGU2014-2673.pdf |
|
|
|
|
|
| Zusammenfassung |
| The shallow submarine eruption which took place in October 10th 2011, 1.8 km south of the
island of El Hierro (Canary Islands) allowed the study of the abrupt changes in the
physical-chemical properties of seawater caused by volcanic discharges. In order to monitor
the evolution of these changes, seven oceanographic surveys were carried out over six months
(November 2011-April 2012) from the beginning of the eruptive stage to the post-eruptive
phase.
Important changes in the water column chemistry including large decreases in pH,
striking effects on the carbonate system, decreases in the oxygen concentrations and
enrichment of Fe(II) and nutrients were produced.
As a result of the ongoing magmatic activity, the submarine eruption produced an
unprecedented episode of severe acidification and fertilization.
The findings highlight that the same volcano which was responsible for the creation of a
highly corrosive environment, affecting marine biota, has also provided the nutrients required
for the rapid recuperation of the marine ecosystem. |
|
|
|
|
|
|