A fluid pulse on the Hikurangi subduction margin: Evidence from a heat flux transect across the upper limit of gas hydrate stability

Simple item page
dc.contributor.authorPecher, Ingo
dc.contributor.authorVillinger, Heiner
dc.contributor.authorKaul, Nobert
dc.contributor.authorCrutchley, Gareth J.
dc.contributor.authorHuhn, K.
dc.contributor.authorKukowski, N.
dc.contributor.authorHenrys, S. A.
dc.contributor.authorRose, P. S.
dc.contributor.authorCoffin, Richard B.
dc.contributor.authorMountjoy, Joshu J.
dc.creator.orcidhttps://orcid.org/0000-0001-7397-5069en_US
dc.creator.orcidhttps://orcid.org/0000-0002-5982-4843en_US
dc.creator.orcidhttps://orcid.org/0000-0001-6844-0318en_US
dc.creator.orcidhttps://orcid.org/0000-0002-6692-0665en_US
dc.creator.orcidhttps://orcid.org/0000-0002-3703-0006en_US
dc.creator.orcidhttps://orcid.org/0000-0001-7397-5069
dc.creator.orcidhttps://orcid.org/0000-0002-5982-4843
dc.creator.orcidhttps://orcid.org/0000-0001-6844-0318
dc.creator.orcidhttps://orcid.org/0000-0002-6692-0665
dc.creator.orcidhttps://orcid.org/0000-0002-3703-0006
dc.creator.orcidhttps://orcid.org/0000-0001-7397-5069
dc.creator.orcidhttps://orcid.org/0000-0002-5982-4843
dc.creator.orcidhttps://orcid.org/0000-0001-6844-0318
dc.creator.orcidhttps://orcid.org/0000-0002-6692-0665
dc.creator.orcidhttps://orcid.org/0000-0002-3703-0006https://orcid.org/0000-0001-7397-5069
dc.creator.orcidhttps://orcid.org/0000-0002-5982-4843
dc.creator.orcidhttps://orcid.org/0000-0001-6844-0318
dc.creator.orcidhttps://orcid.org/0000-0002-6692-0665
dc.creator.orcidhttps://orcid.org/0000-0002-3703-0006
dc.date.accessioned2021-11-12T15:54:19Z
dc.date.available2021-11-12T15:54:19Z
dc.date.issued2017-12-10
dc.description.abstractA transect of seafloor heat probe measurements on the Hikurangi Margin shows a significant increase of thermal gradients upslope of the updip limit of gas hydrate stability at the seafloor. We interpret these anomalously high thermal gradients as evidence for a fluid pulse leading to advective heat flux, while endothermic cooling from gas hydrate dissociation depresses temperatures in the hydrate stability field. Previous studies predict a seamount on the subducting Pacific Plate to cause significant overpressure beneath our study area, which may be the source of the fluid pulse. Double-bottom simulating reflections are present in our study area and likely caused by uplift based on gas hydrate phase boundary considerations, although we cannot exclude a thermogenic origin. We suggest that uplift may be associated with the leading edge of the subducting seamount. Our results provide further evidence for the transient nature of fluid expulsion in subduction zones.en_US
dc.identifier.citationPecher, I.A., Villinger, H., Kaul, N., Crutchley, G.J., Mountjoy, J.J., Huhn, K., Kukowski, N., Henrys, S.A., Rose, P.S. and Coffin, R.B., 2017. A fluid pulse on the Hikurangi subduction margin: Evidence from a heat flux transect across the upper limit of gas hydrate stability. Geophysical Research Letters, 44(24), pp.12-385.en_US
dc.identifier.doihttps://doi.org/10.1002/2017GL076368
dc.identifier.urihttps://hdl.handle.net/1969.6/90019
dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.subjectfluid pulseen_US
dc.subjecthikurangien_US
dc.subjectheat fluxen_US
dc.subjectfluxen_US
dc.subjectgas hydrate stabilityen_US
dc.titleA fluid pulse on the Hikurangi subduction margin: Evidence from a heat flux transect across the upper limit of gas hydrate stabilityen_US
dc.typeArticleen_US

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
Coffin_Richard_FluidPulse.pdf
Size:
10.94 MB
Format:
Adobe Portable Document Format
Description:
Article
Download

License bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.72 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

COS Faculty Works