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Dr

John Hellstrom

Honorary
Earth Sciences
Quaternary paleoclimate
Geochronology
Isotope Geochemistry
Uranium-series
Radiogenic isotopes
science & technology
physical sciences
geology
geosciences, multidisciplinary
John Hellstrom's Profile Picture
Dr

John Hellstrom

 
Division
Science
 
Primary Interest
Quaternary Palaeoclimatology
John Hellstrom's Profile Picture
Dr

John Hellstrom

 
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Projects

Displaying the 10 most recent projects from 13 for John Hellstrom.

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NARACOORTE CAVES: A CRITICAL WINDOW ON FAUNAL EXTINCTIONS AND PAST CLIMATES

This project aims to establish an unprecedented record of biodiversity and environmental change at Australia’s richest Quaternary fossil sit..

2018 - 2022
Active
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DATING THE ABORIGINAL ROCK ART SEQUENCE OF THE KIMBERLEY IN NW AUSTRALIA

This project aims to develop a robust time scale for the known aboriginal rock art sequence in the Kimberley, Western Australia (WA). The pr..

2018 - 2022
Active
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DATING THE ABORIGINAL ROCK ART SEQUENCE OF THE KIMBERLEY IN NW AUSTRALIA

This project aims to develop a robust time scale for the known aboriginal rock art sequence in the Kimberley, Western Australia (WA). The pr..

2018 - 2022
Active
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SOUTH PACIFIC AND AUSTRALIAN HYDROCLIMATIC HISTORY RECORDED BY STALAGMITE CALCITE FABRICS

This project plans to use stalagmites from the South–West Pacific to generate continuous rainfall records for the last 2000 years. Stalagmit..

2016 - 2019
Completed
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AUSTRALIA AS THE WORLD WARMED: OUR REGIONAL RESPONSE TO RAPID GLOBAL WARMING EVENTS IN THE GEOLOGICAL PAST

Projections of global climate change over the next century are so negative we must look to the Pliocene Epoch, more than 2.5 million years a..

2014 - 2018
Completed
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AUSTRALIA AS THE WORLD WARMED: OUR REGIONAL RESPONSE TO RAPID GLOBAL WARMING EVENTS IN THE GEOLOGICAL PAST

Projections of global climate change over the next century are so negative we must look to the Pliocene Epoch, more than 2.5 million years a..

2014 - 2018
Completed
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WHEN THE ICE MELTS: A NEW PERSPECTIVE ON THE CAUSES OF QUATERNARY GLACIAL TERMINATIONS

The project will assemble an unprecedented palaeoclimate time series extending back to 1.2 million years ago that will allow marine and ice ..

2011 - 2014
Completed
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WHEN THE ICE MELTS: A NEW PERSPECTIVE ON THE CAUSES OF QUATERNARY GLACIAL TERMINATIONS

The project will assemble an unprecedented palaeoclimate time series extending back to 1.2 million years ago that will allow marine and ice ..

2011 - 2014
Completed
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MULTI-PROXY FINGERPRINTING, ABSOLUTE DATING, AND LARGE-SCALE MODELLING OF QUATERNARY CLIMATE-VOLCANO-ENVIRONMENT IMPACTS IN SOUTHERN AUSTRALASIA

The discovery of Homo floresiensis (the Hobbit) revealed the surprising diversity of early humans and opened new ways for Australians and In..

2010 - 2012
Completed
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Radiocarbon variations during the Younger Dryas from a tropical speleothem

2012 - 2012
Completed

13

Projects

Project Types

9

Research Grant

3

Research Contracts

1

Internal Research Grant

Scholarly Works

Displaying the 10 most recent scholarly works from 167 for John Hellstrom.

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Holocene hydroclimate changes in continental Croatia recorded in speleothem delta C-13 and delta O-18 from Nova Grgosova Cave

Masa Suric, Andrea Columbu, Robert Loncaric, Petra Bajo, Neven Bocic, Nina Loncar, Russell N Drysdale, John C Hellstrom

Journal article  |  2021  |  HOLOCENE

We present the first stable isotope (δ13C and δ18O) speleothem record from continental Croatia retrieved from two coeval stalagmit..

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Interstadial conditions over the Southern Alps during the early penultimate glacial (MIS 6): a multiproxy record from Rio Martino Cave (Italy)

Eleonora Regattieri, Silvia Querci, Giovanni Zanchetta, Elena Zanella, Ilaria Isola, Russell N Drysdale, John C Hellstrom, Federico Magri

Journal article  |  2021  |  QUATERNARY SCIENCE REVIEWS

Identifying the hydrological and environmental response of the European Alpine region to different combinations of climate boundar..

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Late survival of megafauna refuted for Cloggs Cave, SE Australia: Implications for the Australian Late Pleistocene megafauna extinction debate

Bruno David, Lee J Arnold, Jean-Jacques Delannoy, Joanna Freslov, Chris Urwin, Fiona Petchey, Matthew C McDowell, Russell Mullett, Jerome Mialanes, Rachel Wood, Joe Crouch, Johan Berthet, Vanessa NL Wong, Helen Green, John Hellstrom

Journal article  |  2021  |  QUATERNARY SCIENCE REVIEWS

Understanding of Late Pleistocene megafaunal extinctions in Australia and New Guinea (Sahul) suffers from a paucity of reliably da..

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New Chronological Constraints from Hypogean Deposits for Late Pliocene to Recent Morphotectonic History of the Alpi Apuane (NW Tuscany, Italy)

Ilaria Isola, Francesco Mazzarini, Giancarlo Molli, Leonardo Piccini, Elena Zanella, Giovanni Zanchetta, Russell Drysdale, John Hellstrom, Jon Woodhead, Adriano Roncioni, Flavio Milazzo, Diego Pieruccioni, Eleonora Regattieri

Journal article  |  2021  |  GEOSCIENCES

A sedimentary sequence of fluvial deposits preserved in the Corchia Cave (Alpi Apuane) provides new chronological constraints for ..

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Accurate dating of stalagmites from low seasonal contrast tropical Pacific climate using Sr 2D maps, fabrics and annual hydrological cycles

Mohammadali Faraji, Andrea Borsato, Silvia Frisia, John C Hellstrom, Andrew Lorrey, Adam Hartland, Alan Greig, David P Mattey

Journal article  |  2021  |  SCIENTIFIC REPORTS

Tropical Pacific stalagmites are commonly affected by dating uncertainties because of their low U concentration and/or elevated in..

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2000 Year-old Bogong moth (Agrotis infusa) Aboriginal food remains, Australia.

Birgitta Stephenson, Bruno David, Joanna Fresløv, Lee J Arnold, undefined GunaiKurnai Land and Waters Aboriginal Corporation, Jean-Jacques Delannoy, Fiona Petchey, Chris Urwin, Vanessa NL Wong, Richard Fullagar, Helen Green, Jerome Mialanes, Matthew McDowell, Rachel Wood, John Hellstrom

Journal article  |  2020  |  Nature Scientific Reports

Insects form an important source of food for many people around the world, but little is known of the deep-time history of insect ..

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An end to the Last Interglacial highstand before 120 ka: Relative sea-level evidence from Infreschi Cave (Southern Italy)

Monica Bini, Giovanni Zanchetta, Russell N Drysdale, Biagio Giaccio, Paolo Stocchi, Matteo Vacchi, John C Hellstrom, Isabelle Couchoud, Lorenzo Monaco, Andrea Ratti, Fabio Martini, Lucia Sarti

Journal article  |  2020  |  QUATERNARY SCIENCE REVIEWS

The timing, duration and evolution of sea level during the Marine Isotope Stage 5e (MIS 5e) highstand is a subject of intense deba..

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Magnesium in subaqueous speleothems as a potential palaeotemperature proxy

Russell Drysdale, Isabelle Couchoud, Giovanni Zanchetta, Ilaria Isola, Eleonora Regattieri, John Hellstrom, Aline Govin, Polychronis C Tzedakis, Trevor Ireland, Ellen Corrick, Alan Greig, Henri Wong, Leonardo Piccini, Peter Holden, Jon Woodhead

Journal article  |  2020  |  NATURE COMMUNICATIONS

Few palaeoclimate archives beyond the polar regions preserve continuous and datable palaeotemperature proxy time series over multi..

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An exploration of the utility of speleothem age distributions for palaeoclimate assessment

Rieneke Weij, Jon Woodhead, John Hellstrom, Kale Sniderman

Journal article  |  2020  |  QUATERNARY GEOCHRONOLOGY

Age distributions of speleothem growth frequency are often employed as proxies for past climate variation. However, their interpre..

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Synchronous timing of abrupt climate changes during the last glacial period

Ellen C Corrick, Russell N Drysdale, John C Hellstrom, Emilie Capron, Sune Olander Rasmussen, Xu Zhang, Dominik Fleitmann, Isabelle Couchoud, Eric Wolff

Journal article  |  2020  |  SCIENCE

Many geographically dispersed records from across the globe reveal the occurrence of abrupt climate changes, called interstadial e..

167

Scholarly Works

Keyword Analysis

Expanding Knowledge
Physical Geography and Environmental Geoscience
Geology
Geochemistry
Understanding Climate Change
Archaeology
Climate Change Science
Understanding Past Societies
Atmospheric Sciences
Evolutionary Biology

News

Displaying the 7 most recent news articles from 7 for John Hellstrom.

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A new thermometer for studying our past climate

Russell Drysdale, Isabelle Couchoud, John Hellstrom, Ellen Corrick, Alan Greig, Jon Woodhead

The study of past climates – palaeoclimatology – involves the interrogation of physical, chemical and biological information stored in natur..

October 6, 2020
pursuit Article
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We pieced together the most precise records of major climate events from thousands of years ago. Here’s what we found

Ellen Corrick, John Hellstrom, Russell Drysdale

Between 115,000 and 11,700 years ago, the Earth would have been almost unrecognisable. Massive ice-sheets covered northern Europe and northe..

August 20, 2020
conversation Article
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The rapid climate changes of the last glacial period

Ellen Corrick, Russell Drysdale, John Hellstrom

Abrupt changes in climate have occurred throughout Earth’s geological past. Some of the largest and most rapid changes occurred during the l..

August 20, 2020
pursuit Article
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Australia’s mountains are still growing

John Engel, Jon Woodhead, Helen Green, John Hellstrom

Mountains are universally admired for their aesthetic appeal and widely seen as impressive and unchanging features of our landscape. But to ..

May 20, 2020
pursuit Article
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What causes an ice age to end?

Russell Drysdale, Jon Woodhead, John Hellstrom

Our climate has been much colder than it is at present for most of the last million years.Ice sheets, several kilometres thick, once covered..

March 12, 2020
pursuit Article
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Human evolutionary history takes a rain check

Jon Woodhead, Robyn Pickering, John Hellstrom, Helen Green, Bence Paul

Our ancient ancestors and cousins in the hominin tribe of apes didn’t have houses or air-conditioners or any of the other mod-cons that prot..

November 21, 2018
pursuit Article
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What the past can tell us about the future of climate change

Russell Drysdale, John Hellstrom, Chronis Tzedakis

Earlier this week, 91 of the best scientific minds from around the globe warned what the world could look like if we fail to keep global war..

October 11, 2018
pursuit Article

7

News Articles

Honours, Awards and Fellowships

1998

Australasian Quaternary Association

1

Award

Credentials

Positions

Honorary

Earth Sciences

Honorary

Geography, Earth and Atmospheric Sciences

Education

Doctor of Philosophy

The Australian National University

Bachelor of Science (honours)

Victoria University of Wellington

Links

International Linkages

The University of Waikato

New Zealand

University of Auckland

New Zealand

University of Pisa

Italy

University of Bristol

United Kingdom