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View article: The diverse morphology of pockmarks around Aotearoa New Zealand
The diverse morphology of pockmarks around Aotearoa New Zealand Open
Seafloor pockmarks are abundant around Aotearoa New Zealand, occurring across a diverse range of tectonic, sedimentological and geomorphological settings. Globally, the formation and source of pockmarks is widely researched because they: 1…
View article: Pseudo-3D cubes from densely spaced subbottom profiles via projection onto convex sets interpolation: An open-source workflow applied to a pockmark field
Pseudo-3D cubes from densely spaced subbottom profiles via projection onto convex sets interpolation: An open-source workflow applied to a pockmark field Open
High-resolution subbottom profiler (SBP) data are commonly recorded during academic or industrial surveys and analyzed as 2D profiles. However, there is growing interest in 3D imaging of the shallow seafloor subsurface, e.g., site surveys …
View article: Both Longitudinal and Transverse Extension Controlling Gas Migration Through Submarine Anticlinal Ridges, New Zealand's Southern Hikurangi Margin
Both Longitudinal and Transverse Extension Controlling Gas Migration Through Submarine Anticlinal Ridges, New Zealand's Southern Hikurangi Margin Open
Sub‐seabed fluid flow, gas hydrate accumulation and seafloor methane seepage are tightly interwoven processes with implications for marine biodiversity, ocean chemistry and seafloor stability. We combine long‐offset seismic reflection data…
View article: Spatial-temporal development of paleo-pockmarks on the Chatham Rise from 3D imaging with subbottom profiler data
Spatial-temporal development of paleo-pockmarks on the Chatham Rise from 3D imaging with subbottom profiler data Open
Seafloor depressions, sometimes known as pockmarks, are commonly observed features on the ocean floor. Their shape and size can range from small, circular indentations (10s m) up to large, often irregularly shaped depressions (several kms …
View article: Upward‐Doming Zones of Gas Hydrate and Free Gas at the Bases of Gas Chimneys, New Zealand's Hikurangi Margin
Upward‐Doming Zones of Gas Hydrate and Free Gas at the Bases of Gas Chimneys, New Zealand's Hikurangi Margin Open
Focused gas migration through the gas hydrate stability zone in vertical gas conduits is a global phenomenon. The process can lead to concentrated gas hydrate formation and seafloor gas seepage, which influences seafloor biodiversity and o…
View article: The Evolving Paleobathymetry of the Circum‐Antarctic Southern Ocean Since 34 Ma: A Key to Understanding Past Cryosphere‐Ocean Developments
The Evolving Paleobathymetry of the Circum‐Antarctic Southern Ocean Since 34 Ma: A Key to Understanding Past Cryosphere‐Ocean Developments Open
The Southern Ocean is a key player in the climate, ocean, and atmospheric system. As the only direct connection between all three major oceans since the opening of the Southern Ocean gateways, the development of the Southern Ocean and its …
View article: Extent and Cessation of the Mid‐Cretaceous Hikurangi Plateau Underthrusting: Impact on Global Plate Tectonics and the Submarine Chatham Rise
Extent and Cessation of the Mid‐Cretaceous Hikurangi Plateau Underthrusting: Impact on Global Plate Tectonics and the Submarine Chatham Rise Open
Subduction of oceanic plateaux are events that have occurred infrequently in Earth's history. Although rare, these events are thought to considerably influence regional tectonics and global plate motions. In the mid‐Cretaceous the oceanic …
View article: Seafloor pockmarks on the Chatham Rise, New Zealand: Possible causes and links to glacial cycles.
Seafloor pockmarks on the Chatham Rise, New Zealand: Possible causes and links to glacial cycles. Open
<p>An area of the seafloor of >50,000 km<sup>2</sup> on the Chatham Rise and Bounty Trough east of New Zealand&#8217;s South Island is covered by seafloor depressions.&#160; Distribution and type of these depre…
View article: Storage/Release of Geologic Carbon Influenced Pleistocene Glacial/Interglacial Atmospheric pCO2 Cycles
Storage/Release of Geologic Carbon Influenced Pleistocene Glacial/Interglacial Atmospheric pCO2 Cycles Open
<p>For over 100 years scientists have puzzled over the mechanisms responsible for the repeated climate changes known as Ice Ages. A breakthrough was achieved when ice cores and marine archives revealed that the Ice Ages were paced at…
View article: Late Cretaceous to recent ocean-bottom currents in the SW Pacific Gateway, southeastern Chatham Rise, New Zealand
Late Cretaceous to recent ocean-bottom currents in the SW Pacific Gateway, southeastern Chatham Rise, New Zealand Open
Sedimentary drifts archive the history of the ocean-bottom current dynamics.Bottom currents associated with the Pacific Deep Western Boundary Current (DWBC) along the submarine continental margin off southern and eastern New Zealand are of…
View article: Wide-angle reflection and refraction data (OBH-OBS) along profile AWI-20160400 during SONNE cruise SO246 with links to data files
Wide-angle reflection and refraction data (OBH-OBS) along profile AWI-20160400 during SONNE cruise SO246 with links to data files Open
Profile AWI-20160400 (OBS / OBH refraction data) was shot during the cruise SO246 of the German RV SONNE along the central Chatham Rise, west of the Chatham Islands. Shots were fired with a seismic airgun array (volume 4160 cubic-inch) eve…
View article: Multi-channel seismic reflection data and multibeam data, 2018, New Zealand
Multi-channel seismic reflection data and multibeam data, 2018, New Zealand Open
This dataset includes multi-channel seismic reflection data from three surveys: https://doi.pangaea.de/10.1594/PANGAEA.925803. Post-stack time migrated seismic sections that were collected in 2018, during Research Voyage TAN1808 aboard RV …
View article: Free-air anomaly data along profile AWI-20160400 during SONNE cruise SO246
Free-air anomaly data along profile AWI-20160400 during SONNE cruise SO246 Open
Gravity data along seismic refraction profile AWI-20160400 was recorded during the cruise SO246 of the German RV SONNE along the central Chatham Rise, west of the Chatham Islands. This dataset contains the calculated free-air gravity anoma…
View article: Combined palaeotopography and palaeobathymetry of the Antarctic continent and the Southern Ocean since 34 Ma
Combined palaeotopography and palaeobathymetry of the Antarctic continent and the Southern Ocean since 34 Ma Open
High-resolution palaeotopographic and -bathymetric models of the Southern Ocean and the Antarctic continent facilitate detailed investigation of past ice sheet and ocean circulation development from land to sea, which is essential for robu…
View article: Paleobathymetry and sediment thickness of the Southern Ocean since 34 Ma
Paleobathymetry and sediment thickness of the Southern Ocean since 34 Ma Open
Paleobathymetric models and sediment thickness estimations give insight into the development of the Antarctic Ice Sheets, Southern Ocean current systems and opening of the Southern Ocean Gateways since the Eocene/Oligocene Boundary. A more…
View article: CO<sub>2</sub> Release From Pockmarks on the Chatham Rise‐Bounty Trough at the Glacial Termination
CO<sub>2</sub> Release From Pockmarks on the Chatham Rise‐Bounty Trough at the Glacial Termination Open
Seafloor pockmarks of varying size occur over an area of 50,000 km 2 on the Chatham Rise, Canterbury Shelf and Inner Bounty Trough, New Zealand. The pockmarks are concentrated above the flat‐subducted Hikurangi Plateau. Echosounder data id…
View article: Atmosphere‐Ocean CO<sub>2</sub> Exchange Across the Last Deglaciation From the Boron Isotope Proxy
Atmosphere‐Ocean CO<sub>2</sub> Exchange Across the Last Deglaciation From the Boron Isotope Proxy Open
Identifying processes within the Earth System that have modulated atmospheric pCO 2 during each glacial cycle of the late Pleistocene stands as one of the grand challenges in climate science. The growing array of surface ocean pH estimates…
View article: Pore water geochemistry of sediment core PC83-1 at Chatham Rise, Canterbury Shelf and Inner Bounty Trough, New Zealand
Pore water geochemistry of sediment core PC83-1 at Chatham Rise, Canterbury Shelf and Inner Bounty Trough, New Zealand Open
Pore water geochemistry of sediment core PC75-2 at Chatham Rise, Canterbury Shelf and Inner Bounty Trough, New Zealand
View article: Deglacial isotope analysis from sediment core PC75 and PC83 and a global sea surface pH/pCO2 composite
Deglacial isotope analysis from sediment core PC75 and PC83 and a global sea surface pH/pCO2 composite Open
2 new deglacial planktic boron isotope records from the Southwest Pacific. pH/pCO2 calculated from 12 boron isotope records from the global ocean were compiled to determine the history of air-sea exchange of CO2 since the glacial (last 25k…
View article: The Strike‐Slip West Wishbone Ridge and the Eastern Margin of the Hikurangi Plateau
The Strike‐Slip West Wishbone Ridge and the Eastern Margin of the Hikurangi Plateau Open
The West Wishbone Ridge (WWR), east of New Zealand, has previously been interpreted as a Cretaceous plate boundary, although both the nature and timing of motion along this feature have been disputed. Here, using recently acquired seismic …
View article: Inversion of magnetic and gravity data reveals subsurface igneous bodies in Northland, New Zealand
Inversion of magnetic and gravity data reveals subsurface igneous bodies in Northland, New Zealand Open
Magnetic anomalies identified in the 2011 aeromagnetic survey data of Northland generally correlate with regional geology, but several anomalies have neither surface geological expression nor identifiable associations with the known geolog…