The inception and progression of melting in a monogenetic eruption: Motukorea Volcano, the Auckland Volcanic Field, New Zealand

Lithos ◽  
2012 ◽  
Vol 155 ◽  
pp. 360-374 ◽  
Author(s):  
Lucy E. McGee ◽  
Marc-Alban Millet ◽  
Ian E.M. Smith ◽  
Károly Németh ◽  
Jan M. Lindsay
Keyword(s):  
New Zealand ◽  
Volcanic Field ◽  
Auckland Volcanic Field

USING PYROCLASTIC TEXTURES TO UNDERSTAND DYNAMIC ERUPTION PROCESSES IN THE AUCKLAND VOLCANIC FIELD, NEW ZEALAND

2018 ◽  
Author(s):  
Megan M. Ferguson ◽  
◽  
Michael C. Rowe ◽  
Manuela Tost ◽  
Karoly Nemeth
Keyword(s):  
New Zealand ◽  
Volcanic Field ◽  
Auckland Volcanic Field

scholarly journals K‐Ar ages, paleomagnetism, and geochemistry of the South Auckland volcanic field, North Island, New Zealand

1994 ◽  
Vol 37 (2) ◽  
pp. 143-153 ◽  
Author(s):  
R. M. Briggs ◽  
T. Okada ◽  
T. Itaya ◽  
H. Shibuya ◽  
I. E. M. Smith
Keyword(s):  
New Zealand ◽  
Volcanic Field ◽  
The South ◽  
Auckland Volcanic Field

scholarly journals Composite development and stratigraphy of the Onepoto maar lake sediment sequence (Auckland Volcanic Field, New Zealand)

2021 ◽  
Vol 29 ◽  
pp. 19-37
Author(s):  
Benjamin Läuchli ◽  
Paul Christian Augustinus ◽  
Leonie Peti ◽  
Jenni Louise Hopkins
Keyword(s):  
New Zealand ◽  
Lake Sediment ◽  
Volcanic Field ◽  
Tuff Ring ◽  
Auckland Volcanic Field ◽  
14C Dating ◽  
Quaternary Climate ◽  
Laminated Sediment ◽  
Continuous Record ◽  
Maar Lake

Abstract. The accurate and precise reconstruction of Quaternary climate as well as the events that punctuate it is an important driver of the study of lake sediment archives. However, until recently lake sediment-based palaeoclimate reconstructions have largely concentrated on Northern Hemisphere lake sequences due to a scarcity of continuous and high-resolution lake sediment sequences from the Southern Hemisphere, especially from the southern mid-latitudes. In this context, the deep maar lakes of the Auckland Volcanic Field of northern New Zealand are significant as several contain continuous and well-laminated sediment sequences. Onepoto Basin potentially contains the longest temporal lake sediment record from the Auckland Volcanic Field (AVF), spanning from Marine Isotope Stage 6e (MIS 6e) to the early Holocene when lacustrine sedimentation was terminated by marine breach of the south-western crater tuff ring associated with post-glacial sea-level rise. The Onepoto record consists of two new, overlapping cores spanning ca. 73 m combined with archive material in a complete composite stratigraphy. Tephrochronology and 14C dating provide the fundamental chronological framework for the core, with magnetic relative palaeo-intensity variability downcore, and meteoric 10Be influx into the palaeolake to refine the chronology. The µ-XRF (micro X-ray fluorescence) downcore variability for the entirety of the lake sediment sequence has been established with measurement of a range of proxies for climate currently underway. This work will produce the first continuous record of the last 200 kyr of palaeoclimate from northern New Zealand to date.

Amplified hazard of small-volume monogenetic eruptions due to environmental controls, Orakei Basin, Auckland Volcanic Field, New Zealand

2012 ◽  
Vol 74 (9) ◽  
pp. 2121-2137 ◽  
Author(s):  
Károly Németh ◽  
Shane J. Cronin ◽  
Ian E. M. Smith ◽  
Javier Agustin Flores
Keyword(s):  
New Zealand ◽  
Small Volume ◽  
Volcanic Field ◽  
Auckland Volcanic Field ◽  
Environmental Controls

scholarly journals Facies analysis of pyroclastic deposits within basaltic tuff‐rings of the Auckland volcanic field, New Zealand

1996 ◽  
Vol 39 (2) ◽  
pp. 309-327 ◽  
Author(s):  
Sharon R. Allen ◽  
Vivienne F. Bryner ◽  
Ian E. M. Smith ◽  
Peter F. Ballance
Keyword(s):  
New Zealand ◽  
Facies Analysis ◽  
Volcanic Field ◽  
Auckland Volcanic Field ◽  
Pyroclastic Deposits

Monitoring seismic precursors to an eruption from the Auckland Volcanic Field, New Zealand

2007 ◽  
Vol 50 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Steven Sherburn ◽  
Bradley J. Scott ◽  
Jane Olsen ◽  
Craig Miller
Keyword(s):  
New Zealand ◽  
Volcanic Field ◽  
Auckland Volcanic Field ◽  
Seismic Precursors

Olivine xenocryst diffusion reveals rapid monogenetic basaltic magma ascent following complex storage at Pupuke Maar, Auckland Volcanic Field, New Zealand

2018 ◽  
Vol 499 ◽  
pp. 13-22 ◽  
Author(s):  
Marco Brenna ◽  
Shane J. Cronin ◽  
Ian E.M. Smith ◽  
Peter M.E. Tollan ◽  
James M. Scott ◽  
...  
Keyword(s):  
New Zealand ◽  
Basaltic Magma ◽  
Volcanic Field ◽  
Magma Ascent ◽  
Auckland Volcanic Field

scholarly journals Seismic monitoring of the Auckland Volcanic Field during New Zealand's COVID-19 lock-down

2020 ◽  
Author(s):  
Kasper van Wijk ◽  
Calum J. Chamberlain ◽  
Thomas Lecocq ◽  
Koen Van Noten
Keyword(s):  
New Zealand ◽  
Seismic Noise ◽  
Template Matching ◽  
Monitoring Network ◽  
Volcanic Field ◽  
Local Network ◽  
Auckland Volcanic Field ◽  
Near Surface ◽  
Local Seismicity ◽  
The City

Abstract. The city of Auckland, New Zealand (Tamaki Makaurau, Aotearoa) sits on top of an active volcanic field. Seismic stations in and around the city monitor activity of the Auckland Volcanic Field (AVF), and provide data to image its subsurface. The seismic sensors – some positioned at the surface and others in boreholes – are generally noisier during the day than the night. For most stations weekdays are noisier than weekends, proving human activity contributes to recordings of seismic noise, even on seismographs as deep as 384 m below the surface, and as far as 15 km from Auckland's Central Business District. Lock-down measures in New Zealand to battle the spread of COVID-19 allow us to separate sources of seismic energy and evaluate both the quality of the monitoring network, as well as the level of local seismicity. A matched-filtering scheme based on template matching with known earthquakes improved the existing catalogue of 5 known local earthquakes to 35 for the period between November 1st, 2019 and June 15th, 2020. However, the Level 4 lock-down from March 25th to April 27th – with its drop in anthropogenic seismic noise – did not mark an enhanced detection level. Nevertheless, it may be that wind and ocean swell mask the presence of weak local seismicity, particularly near surface-mounted seismographs in the Hauraki Gulf that show much higher levels of noise than the rest of the local network.

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