Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
Submarine hydrothermal discharge and fluxes of dissolved Fe and Mn, and He isotopes at brothers volcano based on radium isotopes
Neuholz, R.; Kleint, C.; Schnetger, B.; Koschinsky, A.; Laan, P.; Middag, R.; Sander, S.G.; Thal, J.; Türke, A.; Walter, M.; Zitoun, R.; Brumsack, H.-J. (2020). Submarine hydrothermal discharge and fluxes of dissolved Fe and Mn, and He isotopes at brothers volcano based on radium isotopes. Minerals 10(11): 969. https://doi.org/10.3390/min10110969
In: Minerals. MDPI: Basel. e-ISSN 2075-163X, meer
|   |
| Author keywords |
hydrothermal flux; radium isotopes; Kermadec island arc; helium; iron flux; manganese flux; 224Ra; 223Ra |
| Auteurs | | Top |
- Neuholz, R.
- Kleint, C.
- Schnetger, B.
- Koschinsky, A.
|
- Laan, P., meer
- Middag, R., meer
- Sander, S.G.
- Thal, J.
|
- Türke, A.
- Walter, M.
- Zitoun, R., meer
- Brumsack, H.-J.
|
| Abstract |
Hydrothermal venting is an important transfer process of energy and elements between the Earth’s solid material and the oceans. Compared to mid-ocean-ridge hydrothermal vent fields, those at intra-oceanic island arcs are typically in shallower water depth and have a more variable geochemical fluid composition. Biologically essential trace elements (such as Fe and Mn) are generally elevated in fluids of both deep and shallow hydrothermal vent fields, while vents at shallower water depth influence the photic zone more directly and thus are potentially more relevant for marine primary productivity. However, fluid flux estimations of island arc hydrothermal systems into the surrounding water column are scarce. This study (I) presents a method based on short-lived radium isotopes to estimate submarine hydrothermal discharge (SHD), (II) applies this method at Brothers volcano in the southern Kermadec arc, located northeast of New Zealand, and (III) gives dissolved Fe, Mn and He isotope flux estimates for the Earth´s longest intra-oceanic island arc, the Kermadec arc. The comparison between measured inert He isotope concentrations in the plume with calculated concentrations based on Ra isotopes matched reasonably well, which supports the use of a Ra-based discharge model. Overall, this study represents a novel approach to assess fluid and thus trace element fluxes from one hydrothermal vent field, which can be applied in future studies on various hydrothermal systems to improve geochemical models of element cycling in the ocean. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
