Dr Mike Gagan

Associate Professor
Researcher - Palaeoenvironments
J1, room G22
 +61 2 61255926

Research

Research interests

My research builds on the field of environmental geochemistry to answer fundamental questions about past climate change and environmental impacts, particularly in the Southern Hemisphere and tropical Australasia. The primary "tools" I use are geochemical signals preserved in cave stalagmites and raised-reef corals, which reveal the history of temperature, rainfall and vegetation change, and natural hazards such as volcanic eruptions and great earthquakes. My focal point is Indonesia where I work with Professor Wahyoe Hantoro and Dr Danny Natawidjaja of the Indonesian Institute of Sciences. Four of our current research interests are:

Photo: Dan Zwartz

Palaeomonsoons in Australasia

Recent advances in understanding geochemical signals preserved in cave stalagmites has opened-up an exciting new era in tropical climate change research. Stalagmites from the karst terranes of Indonesia provide an unprecedented opportunity to reconstruct Australasian monsoon variability over the last 500,000 years. These lengthy records will provide "hard evidence" for how monsoon rainfall responds to warmer and rapidly changing climates at time-scales relevant to the societies of densely populated Australasia.

 

Photo: Garry K. Smith

Environmental impacts on Homo floresiensis

What caused the remarkably recent disappearance of the dwarf hominin Homo floresiensis (the Hobbit) from the island of Flores about 18,000-12,000 years ago is an intriguing question.  One possibility is that the Hobbit was pushed beyond its adaptive capabilities during an ecosystem collapse brought about by a massive volcanic eruption.  Stalagmites from Flores will provide a 90,000-year history of volcanic catastrophes and environmental “turning points” that could have played a role in the demise of the Hobbit.

 

Great-earthquake cycles in Sumatra

The gigantic earthquake and tsunami disaster in Sumatra on 26 December 2004 shocked the world. More large Sumatran quakes may be imminent, but their recurrence intervals remain unknown. By stroke of luck, we recently found that geochemical tracers in long-lived corals record the history of vertical crustal deformation. Work is underway to deploy this newfound technique to reconstruct recurrence intervals and the patterns of crustal deformation leading to great-earthquakes in Sumatra over the last 7,000 years.

 

Photo: Stewart Fallon

The Indo-Pacific ocean-atmosphere system

The Indo-Pacific ocean-atmosphere system has a profound influence on global climate. Knowing how it will respond to greenhouse-gas forcing is critical for predicting patterns of change in life-giving rainfall. Geochemical signals in raised-reef corals from Indonesia offer remarkably detailed archives of past ocean temperature and rainfall. Our goal is to quantify the tropical rainfall response to Indo-Pacific climates that were warmer or cooler than today, and changing rapidly during century-scale time-slices over the last 135,000 years.

Publications

  • Felis, T., McGregor, H. V., Linsley, B. K., Tudhope, A. W., Gagan, M. K., Suzuki, A., Inoue, M., Thomas, A. L., Esat, T. M., Thompson, W. G., Tiwari, M., Potts, D. C., Mudelsee, M., Yokoyama, Y. & Webster, J. M (2014). Intensification of the meridional temperature gradient in the Great Barrier Reef following the Last Glacial Maximum. Nature Communications, doi:10.1038/ncomms5102.
  • Lo, L., Shen, C.-C., Lu, C.-J., Chen, Y.-C., Chang, C.-C., Wei, K.-Y., Qu, D. & Gagan, M. K. (2014). Determination of element/Ca ratios in foraminifera and corals using cold- and hot-plasma techniques in inductively coupled plasma sector field mass spectrometry. Journal of Asian Earth Sciences, 81: 115-122.
  • Ayliffe, L. K., Gagan, M. K., Zhao, J.-x., Drysdale, R. N., Hellstrom, J. C., Hantoro, W. S., Griffiths, M. L., Scott-Gagan, H., St Pierre, E., Cowley, J. A. & Suwargadi, B. W. (2013). Rapid interhemispheric climate links via the Australasian monsoon during the last deglaciation. Nature Communications, 4:2908 doi:10.1038/ncomms3908.
  • McGregor, H. V., Fischer, M. J., Gagan, M. K., Fink, D., Phipps, S. J., Wong, H. & Woodroffe, C. D. (2013). A weak El Niño/Southern Oscillation with delayed seasonal growth around 4,300 years ago. Nature Geoscience, 6: 949-953.
  • McGregor, H. V., Woodroffe, C. D., Fischer, M., Gagan, M. K. & Fink, D. (2013). Coral microatoll reconstructions of El Niño-Southern Oscillation: New windows on seasonal and interannual processes. PAGES news: 21(2): 52-53.
  • Griffiths, M. L., Drysdale, R. N., Gagan, M. K., Zhao, J.-x., Hellstrom, J. C., Ayliffe L. K. & Hantoro, W. S. (2013). Abrupt increase in east Indonesian rainfall from flooding of the Sunda Shelf ~9,500 years ago. Quaternary Science Reviews, 74: 273-279.
  • Reeves, J. M., Bostock, H. C., Ayliffe, L. K., Barrows, T. T., De Deckker, P., Devriendt, L. S., Dunbar, G. B., Drysdale, R. N., Fitzsimmons, K. E., Gagan, M. K., Griffiths, M. L., Haberle, S. G., Jansen, J. D., Krause, C., Lewis, S., McGregor, H. V., Mooney, S. D., Moss, P., Nanson, G. C., Purcell, A. & van der Kaars, S. (2013). Palaeoenvironmental change in tropical Australasia over the last 30,000 years – a synthesis by the OZ-INTIMATE group. Quaternary Science Reviews, 74: 97-114.
  • Griffiths, M. L., Drysdale, R. N., Gagan, M. K., Hellstrom, J. C., Couchoud, I., Ayliffe, L. K., Vonhof, H. B. & Hantoro, W.S. (2013). Australasian monsoon response to Dansgaard-Oeschger event 21 and teleconnections to higher latitudes. Earth and Planetary Science Letters, 369-370: 294-304.
  • Treble, P. C., Bradley, C., Wood, A., Baker, A., Jex, C. N., Fairchild, I. J., Gagan, M. K., Cowley, J. & Azcurra, C. (2013). An isotopic and modelling study of flow paths and storage in Quaternary calcarenite, SW Australia: implications for speleothem paleoclimate records. Quaternary Science Reviews, 64: 90-103.
  • St Pierre, E. J., Westaway, K. E., Zhao, J.-x., Gagan, M. K., Lentfer, C., Awe Due, R., Morwood, M. J., Hantoro, W. S., Djubiantono, T. & Suwargadi, B. W. (2013). Preliminary U-series and thermoluminescence dating of excavated deposits in Liang Bua sub-chamber, Flores, Indonesia. Journal of Archaeological Science, 40: 148-155.
  • Honda, M., Phillips, D., Kendrick, M. A., Gagan, M. K. & Taylor, W. R. (2012). Noble gas and carbon isotope ratios in Argyle diamonds, Western Australia: Evidence for a deeply subducted volatile component. Australian Journal of Earth Sciences, 59: 1135-1142.
  • Griffiths, M. L., Fohlmeister, J., Drysdale, R. N., Hua, Q., Johnson, K. R., Hellstrom, J. C., Gagan M. K. & Zhao, J.-x. (2012). Hydrological control of the dead-carbon fraction in a Holocene tropical speleothem. Quaternary Geochronology, 14: 81-93.
  • Price, G. D., Williamson, T., Henderson, R. A. & Gagan, M.K. (2012). Barremian-Cenomanian palaeotemperatures for Australian seas based on new oxygen-isotope data from belemnite rostra. Palaeogeography, Palaeoclimatology, Palaeoecology, 358-360: 27-39.
  • Gagan, M. K., Dunbar, G. B. & Suzuki, A. (2012). The effect of skeletal mass accumulation in Porites on coral Sr/Ca and d18O paleothermometry. Paleoceanography, 27, PA1203, doi:10.1029/2011PA002215.
  • Marwick, B. & Gagan, M. K. (2011). Late Pleistocene monsoon variability in northwest Thailand: an oxygen isotope sequence from the bivalve Margaritanopsis laosensis excavated in Mae Hong Song province. Quaternary Science Reviews, 30: 3088-3098.
  • McGregor, H. V., Fischer, M. J., Gagan, M. K., Fink, D. & Woodroffe, C. D. (2011). Environmental control of the oxygen isotope composition of Porites coral microatolls. Geochimica et Cosmochimica Acta, 75: 3930-3944.
  • Lewis, S. C., Gagan, M. K., Ayliffe, L. K., Zhao, J.-x., Hantoro, W. S., Treble, P. C., Hellstrom, J. C., LeGrande, A. N., Kelley, M., Schmidt, G. A. & Suwargadi, B. W. (2011). High-resolution stalagmite reconstructions of Australian-Indonesian monsoon rainfall variability during Heinrich Stadial 3 and Greenland Interstadial 4. Earth and Planetary Science Letters, 303: 133-142.
  • Gagan, M. K. & Abram, N. J. (2011). Stable isotopes and trace elements. In D. Hopley (ed.). Encyclopedia of Modern Coral Reefs, Springer, The Netherlands, pp. 1034-1043.
  • Prideaux, G. J., Gully, G. A., Couzens, A. M. C., Ayliffe, L. K., Jankowski, N. R., Jacobs, Z., Roberts, R. G., Hellstrom, J. C., Gagan, M. K. & Hatcher, L. M. (2010). Timing and dynamics of Late Pleistocene mammal extinctions in southwestern Australia. Proceedings of the National Academy of Sciences of the United States of America, 107: 22,157-22,162.
  • Griffiths, M. L., Drysdale, R. N., Vohnof, H. B., Gagan, M. K., Zhao, J.-x., Ayliffe, L. K., Hantoro, W. S., Hellstrom, J. C., Cartwright, I., Frisia, S. & Suwargadi, B. W. (2010). Younger Dryas-Holocene temperature and rainfall history of southern Indonesia from d18O in speleothem calcite and fluid inclusions. Earth and Planetary Science Letters, 295: 30-36.
  • Griffiths, M. L., Drysdale, R. N., Gagan, M. K., Zhao, J.-x., Ayliffe, L. K., Hellstrom, J. C., Hantoro, W. S., Frisia, S., Feng, Y.-x., Cartwright, I., St. Pierre, E., Fischer, M. J. & Suwargadi, B. W. (2009). Increasing Australian-Indonesian monsoon rainfall linked to early Holocene sea-level rise. Nature Geoscience, 2: 636-639.
  • Griffiths, M. L., Drysdale, R. N., Gagan, M. K., Frisia, S., Zhao, J.-x., Ayliffe, L. K., Hantoro, W. S., Hellstrom, J. C., Fischer, M. J., Feng, Y.-x. & Suwargadi, B. W. (2010). Evidence for Holocene changes in Australian-Indonesian monsoon rainfall from stalagmite trace element and stable isotope ratios. Earth and Planetary Science Letters, 292: 27-38.
  • Carter, R. M., Larcombe, P., Dye, J. E., Gagan, M. K. & Johnson, D. P. (2009). Long-shelf sediment transport and storm-bed formation by Cyclone Winifred, central Great Barrier Reef, Australia. Marine Geology, 267: 101-113.
  • Abram, N. J., McGregor, H. V., Gagan, M. K., Hantoro, W. S. & Suwargadi, B. W. (2009). Oscillations in the southern extent of the Indo-Pacific Warm Pool during the mid-Holocene. Quaternary Science Reviews, 28: 2794-2803.
  • Barker, S. L. L., Bennett, V. C., Cox, S. F., Norman, M. C. & Gagan, M. K. (2009). Sm-Nd, Sr, C and O isotope systematics in hydrothermal calcite-fluorite veins: implications for fluid-rock reaction and geochronology. Chemical Geology, 268: 58-66.
  • Gagan, M. & Griffiths, M. (2009). Stalagmites down under, Nature Geoscience, 2: 664.
  • Griffiths, M. L., Drysdale, R. N., Gagan, M. K., Zhao, J.-x., Ayliffe, L. K., Hellstrom, J. C., Hantoro, W. S., Frisia, S., Feng, Y.-x., Cartwright, I., St Pierre, E., Fischer, M. J. & Suwargadi, B. W. (2009). Increasing Australian-Indonesian monsoon rainfall linked to early Holocene sea-level rise. Nature Geoscience, 2: 636-639.
  • Prideaux, G. J., Ayliffe, L. K., DeSantis, L. R. G., Murray, P. F., Gagan, M. K. & Cerling, T. E. (2009). Extinction implications of a chenopod browse diet for a giant Pleistocene kangaroo. Proceedings of the National Academy of Sciences of the United States of America, 106: 11,646-11,650.
  • Bostock, H. C., Opdyke, B. N., Gagan, M. K. & Fifield, L. K. (2009). Late Quaternary siliciclastic/carbonate sedimentation model for the Capricorn Channel, southern Great Barrier Reef province, Australia. Marine Geology, 257: 107-123.
  • Gagan, M. K. (2009). Paleo-El Niño-Southern Oscillation (ENSO) records. In V. Gornitz (ed.), Encyclopedia of Paleoclimatology and Ancient Environments, Springer, The Netherlands, pp. 721-728.
  • Abram, N. J., Gagan, M. K., Cole, J. E., Hantoro, W. S. & Mudelsee, M. (2008). Recent intensification of tropical climate variability in the Indian Ocean. Nature Geoscience, 1: 849-853.
  • Fraser, R. A., Grün, R., Privat, K. & Gagan, M. K. (2008). Stable-isotope micrprofiling of wombat tooth enamel records seasonal changes in vegetation and environmental conditions in eastern Australia. Palaeogeography, Palaeoclimatology, Palaeoecology, 269: 66-77.
  • Zhou, H., Zhao, J-x., Feng, Y., Gagan, M. K., Zhou, G. & Yan, J. (2008). Distinct climate change synchronous with Heinrich event one, recorded by stable oxygen and carbon isotopic compositions in stalagmites from China. Quaternary Research, 69: 306-315.
  • McGregor, H. V., Gagan, M. K., McCulloch, M. T., Hodge, E. & Mortimer, G. (2008). Mid-Holocene variability in the marine 14C reservoir age for northern coastal Papua New Guinea. Quaternary Geochronology, 3: 213-225.
  • Anderson, A., Gagan, M. K. & Shulmeister, J. (2007). Mid-Holocene cultural dynamics and climatic change in the western Pacific. In D.G. Anderson, K.A. Maasch and D.H. Sandweiss (eds.), Climate Change and Cultural Dynamics: A Global Perspective on Mid-Holocene Transitions, Academic Press, Amsterdam, pp. 265-296.
  • Hendy, E. J., Gagan, M. K., Lough, J. M., McCulloch, M. & deMenocal, P. B. (2007). Impact of skeletal dissolution and secondary aragonite on trace element and isotopic climate proxies in Porites corals. Paleoceanography, 22, PA4101, doi:10.1029/2007PA001462.
  • Miller, G. H., Magee, J. W., Fogel, M. L. & Gagan, M. K. (2007). Detecting human impacts on the flora, fauna, and summer monsoon of Pleistocene Australia. Climate of the Past, 3: 463-473.
  • Murphy, B. P., Bowman, D. M. J. S. & Gagan, M. K. (2007). Sources of carbon isotope variation in kangaroo bone collagen and tooth enamel. Geochimica et Cosmochimica Acta, 71: 3847-3858.
  • Murphy, B. P., Bowman, D. M. J. S. & Gagan, M. K. (2007). The interactive effect of temperature and humidity on the oxygen isotope composition of kangaroos. Functional Ecology, 21: 757-766.
  • Calvo, E., Marshall, J. F., Pelejero, C., McCulloch, M. T., Gagan, M. K. & Lough, J. M. (2007). Interdecadal climate variability in the Coral Sea since 1708 A.D. Palaeogeography, Palaeoclimatology, Palaeoecology, 248: 190-201.
  • Brook, B. W., Bowman, D. M. J. S., Burney, D. A., Flannery, T. F., Gagan, M. K., Gillespie, R., Johnson, C. N., Kershaw, A. P., Magee, J. W., Martin, P. S., Miller, G. H., Peisner, B., Prideaux, G. J. & Roberts, R. G. (2007). Would the Australian megafauna have become extinct if humans had never colonised the continent? Comments on “A review of the evidence for a human role in the extinction of Australian megafauna and an alternative explanation” by S. Wroe and J. Field. Quaternary Science Reviews, 26: 560-564.
  • Zanchetta, G., Drysdale, R. N., Hellstrom, J. C., Fallick, A. E., Isola, I., Gagan, M. K. & Pareschi, M. T. (2007). Enhanced rainfall in the western Mediterranean during deposition of sapropel S1: stalagmite evidence from Corchia cave (Central Italy). Quaternary Science Reviews, 26: 279-286.
  • Abram, N. J., Gagan, M. K., Liu, Z., Hantoro, W. S., McCulloch, M. T. & Suwargadi, B. W. (2007). Seasonal characteristics of the Indian Ocean Dipole during the Holocene epoch. Nature, 445: 299-302.
  • Suzuki, A., Gagan, M. K., Kan, H., Edward, A., Siringan, F. P., Yoneda, M. & Kawahata, H. (2006). Coral records of the 1990s in the tropical northwest Pacific: ENSO, mass coral bleaching, and global warming. In H. Kawahata (ed.), Global Climate Change and Response of the Carbon Cycle in the Equatorial Pacific, Indian Ocean, and Adjacent Landmasses, Elsevier Oceanography Series, pp. 217-244.
  • Pelejero, C., Calvo, E., McCulloch, M. T., Marshall, J. M., Gagan, M. K., Lough, J. M. & Opdyke, B. N. (2006). Response to comment on “Preindustrial to modern interdecadal variability in coral reef pH”. Science, 314: 595.
  • Shulmeister, J., Rodbell, D. T., Gagan, M. K. & Seltzer, G. O. (2006). Inter-hemispheric linkages in climate change: paleo-perspectives for future climate change. Climate of the Past, 2: 167-185.
  • Barker, S. L. L., Cox, S. F., Eggins, S. M. & Gagan, M. K. (2006). Microchemical evidence for episodic growth of antitaxial veins during fracture-controlled fluid flow. Earth and Planetary Science Letters, 250: 331-344.
  • Moy, A. D., Howard, W. R. & Gagan, M. K. (2006). Late Quaternary palaeoceanography of the Circumpolar Deep Water from the South Tasman Rise. Journal of Quaternary Science, 21: 763-777.
  • Turney, C. S. M., Haberle, S., Fink, D., Kershaw, A. P., Barbetti, M., Barrows, T. T., Black, M., Cohen, T. J., Corrége, T., Hesse, P. P., Hua, Q., Johnstone, R., Morgan, V., Moss, P., Nanson, G., van Ommen, T., Rule, S., Williams, N. J., Zhao, J.-x., D’Costa, D., Feng, Y.-x., Gagan, M., Mooney, S. & Xia, Q. (2006). Integration of ice core, marine and terrestrial records for the Australian Last Glacial Maximum and Termination: a contribution from the OZ INTIMATE group. Journal of Quaternary Science, 21: 751-761.
  • Ayling, B., McCulloch, M. T., Gagan, M. K., Stirling, C. H., Andersen, M. B. & Blake, S.G. (2006). Sr/Ca and d18O seasonality in a Porites coral from the MIS 9 (339-303 ka) interglacial. Earth and Planetary Science Letters, 248: 462-475.
  • Wu, J. L., Lin, L., Gagan, M. K., Schleser, G. H. & Wang, S. M. (2006). Organic matter stable isotope (d13C, d15N) response to historical eutrophication of Lake Taihu, China. Hydrobiologia, 563: 19-29.
  • Bostock, H. C., Opdyke, B. N., Gagan, M. K., Kiss, A. E. & Fifield, L. K. (2006). Glacial/interglacial changes in the East Australian current. Climate Dynamics, 26: 645-659.
  • Anderson, A., Chappell, J., Gagan, M. K & Grove, R. (2006). Prehistoric maritime migration in the Pacific islands: an hypothesis of ENSO forcing. The Holocene, 16: 1-6.
  • Pelejero, C., Calvo, E., McCulloch, M. T., Marshall, J. M., Gagan, M. K., Lough, J. M. & Opdyke, B. N. (2005). Preindustrial to modern interdecadal variability in coral reef pH. Science, 309: 2204-2207.
  • Sun, D., Gagan, M. K., Cheng, H., Scott-Gagan, H., Dykoski, C. A., Edwards, R. L. & Su, R. (2005). Seasonal and interannual variability of the mid-Holocene East Asian monsoon in coral d18O records from the South China Sea. Earth and Planetary Science Letters, 237: 69-84.
  • Johnson, B. J., Miller, G. H., Magee, J. W., Gagan, M. K., Fogel, M. L. & Quay, P. D. (2005). Carbon isotope evidence for abrupt grassland loss coincident with European settlement of Lake Eyre, South Australia. The Holocene, 15: 888-896.
  • Miller, G. H., Fogel, M. L., Magee, J. W., Gagan, M. K., Clarke, S. J. & Johnson, B. J. (2005). Ecosystem collapse in Pleistocene Australia and a human role in megafaunal extinction.  Science, 309: 287-290.
  • Treble, P. C, Chappell, J., Gagan, M. K., McKeegan, K. D. & Harrison, T. M. (2005). In situ measurement of seasonal d18O variations and analysis of isotopic trends in a precisely dated speleothem from southwest Australia. Earth and Planetary Science Letters, 233: 17-32.
  • Gagan, M. K. & Thompson, L. G. (2004). Evolution of the Indo-Pacific Warm Pool and Hadley-Walker circulations since the last deglaciation. In H.F. Diaz and R.S. Bradley (eds.), The Hadley Circulation: Present, Past and Future, Kluwer Academic Publishers, pp. 289-312.
  • Ayliffe, L. K., Bird, M. I., Gagan, M. K., Isdale, P. J., Scott-Gagan, H., Parker, B., Griffin, D., Nongkas, M. & McCulloch, M. T. (2004). Geochemistry of coral from Papua New Guinea as a proxy for ENSO ocean-atmosphere interactions in the Pacific Warm Pool. Continental Shelf Research, 24: 2343-2356.
  • Bostock, H. C., Opdyke, B. N., Gagan, M. K. & Fifield, L. K. (2004). Carbon isotope evidence for changes in Antarctic Intermediate Water circulation and ocean ventilation in the southwest Pacific during the last deglaciation. Paleoceanography, 19, PA4013, doi:10.1029/2004PA001047.
  • McGregor, H. V. & Gagan, M. K. (2004). Western Pacific coral d18O records of anomalous Holocene variability in the El Niño-Southern Oscillation. Geophysical Research Letters, 31, L11204, doi:10.1029/2004GL019972.
  • Grumet, N. S., Abram, N. J., Beck, J. W., Dunbar, R. B., Gagan, M. K., Guilderson, T. P., Hantoro, W. S. & Suwargadi, B. W. (2004). Coral radiocarbon records of Indian Ocean water mass mixing and wind-induced upwelling along the coast of Sumatra, Indonesia. Journal of Geophysical Research, 109, C05003, doi:10.1029/2003JC002087.
  • Wu, J., Gagan, M. K., Jiang, X., Xia, W. & Wang, S. (2004). Sedimentary geochemical evidence for recent eutrophication of Lake Chenghai, Yunnan, China. Journal of Paleolimnology, 32: 85-94.
  • Corrége, T., Gagan, M. K., Beck, J. W., Burr, G. S., Cabioch, G. & Le Cornec, F. (2004). Interdecadal variation in the extent of South Pacific tropical waters during the Younger Dryas event. Nature, 428: 927-929.
  • Gagan, M. K., Hendy, E. J., Haberle, S. G. & Hantoro, W. S. (2004). Post-glacial evolution of the Indo-Pacific Warm Pool and El Niño-Southern Oscillation. Quaternary International, 118-119: 127-143.
  • Müller, A., Gagan, M. K. & Lough, J. M. (2004). Effect of early marine diagenesis on coral reconstructions of surface-ocean 13C/12C and carbonate saturation state. Global Biogeochemical Cycles, 18(1), GB1033, doi:10.1029/2003GB002112.
  • Abram, N. J., Gagan, M. K., McCulloch, M. T., Chappell, J. & Hantoro, W. S. (2004). The sudden death of a coral reef - Response. Science, 303: 1293-1294.
  • Abram, N. J., Gagan, M. K., McCulloch, M. T., Chappell, J. & Hantoro, W. S. (2004). Response to comment on “Coral reef death during the 1997 Indian Ocean dipole linked to Indonesian wildfires”. Science, 303: 1297.
  • Suzuki, A., Gagan, M. K., Fabricius, K., Isdale, P. J., Yukino, I. & Kawahata, H. (2003). Skeletal isotope microprofiles of growth perturbations in Porites corals during the 1997-1998 mass bleaching event. Coral Reefs, 22, 357-369.
  • Zhao, J.-x., Wang, Y.-j., Collerson, K. D. & Gagan, M. K. (2003). Speleothem U-series dating of semi-synchronous climate oscillations during the last deglaciation. Earth and Planetary Science Letters, 216: 155-161.
  • Hendy, E. J., Lough, J. M. & Gagan, M. K. (2003). Historical mortality in massive Porites from the central Great Barrier Reef, Australia: evidence for past environmental stress? Coral Reefs, 22: 207-215.
  • Abram, N. J., Gagan, M. K., McCulloch, M. T., Chappell, J. & Hantoro, W. S. (2003). Coral reef death during the 1997 Indian Ocean dipole linked to Indonesian wildfires. Science, 301, 952-955.
  • Ihlenfeld, C., Norman, M. D., Gagan, M. K., Drysdale, R. N., Maas, R. & Webb, J. (2003). Climatic significance of seasonal trace element and stable isotope variations in a modern freshwater tufa. Geochimica et Cosmochimica Acta, 67: 2341-2357.
  • McGregor, H. V. & Gagan, M. K. (2003). Diagenesis and geochemistry of Porites corals from Papua New Guinea: implications for paleoclimate reconstruction. Geochimica et Cosmochimica Acta, 67: 2147-2156.
  • Woodroffe, C. D., Beech, M. & Gagan, M. K. (2003). Mid-late Holocene El Niño variability in the equatorial Pacific from coral microatolls. Geophysical Research Letters, 30(7), 1358, doi:10.1029/2002GL015868.
  • Watanabe, T., Gagan, M. K., Corrége, T., Scott-Gagan, H., Cowley, J. & Hantoro, W. S. (2003). Oxygen isotope systematics in Diploastrea heliopora: New coral archive of tropical paleoclimate. Geochimica et Cosmochimica Acta, 67: 1349-1358.
  • Hendy, E. J., Gagan, M. K. & Lough, J. M. (2003). Chronological control of coral records using luminescent lines and evidence for non-stationary ENSO teleconnections in northeast Australia. The Holocene, 13: 187-199.
  • Gagan, M. K., Ayliffe, L. K., Opdyke, B. N., Hopley, D., Scott-Gagan, H. & Cowley, J. (2002). Coral oxygen isotope evidence for recent groundwater fluxes to the Australian Great Barrier Reef. Geophysical Research Letters, 29(20), 1982, doi:10.1029/2002GL015336.
  • Kawahata, H., Nishimura, A. & Gagan, M. K. (2002). Seasonal change in foraminiferal production in the western equatorial Pacific: evidence from sediment trap experiments. Deep-Sea Research, 49: 2783-2800.
  • Hendy, E. J., Gagan, M. K., Alibert, C., McCulloch, M. T., Lough, J. M. & Isdale, P. J. (2002). Abrupt shift in tropical sea surface salinity at end of Little Ice Age. Science, 295: 1511-1514.
  • Müller, A., Gagan, M. K. & McCulloch, M. T. (2001). Early marine diagenesis in corals and geochemical consequences for paleoceanographic reconstructions. Geophysical Research Letters, 28: 4471-4474.
  • Suzuki, A., Gagan, M. K., De Deckker, P., Omura, A., Yukino, I. & Kawahata, H. (2001). Last Interglacial coral record of enhanced insolation seasonality and seawater 18O enrichment in the Ryukyu Islands, northwest Pacific. Geophysical Research Letters, 28: 3685-3688.
  • Gagan, M. K., Ayliffe, L. K., Beck, J. W., Cole, J. E., Druffel, E. R. M., Dunbar, R. B. & Schrag, D.P. (2000). New views of tropical paleoclimates from corals. Quaternary Science Reviews, 19: 45-64.
  • Gagan, M. K. & Chappell, J. (2000). Massive corals: grand archives of ENSO. In R. H. Grove and J. Chappell (eds.), El Niño: History and Crisis, The White Horse Press, United Kingdom, pp. 35-50.
  • Cane, M. R., Clement, A. C., Gagan, M. K., Ayliffe, L. K. & Tudhope, A. W. (2000). ENSO through the Holocene as depicted in corals and a model simulation. PAGES news: 8(1): 3-7.
  • Woodroffe, C. D. & Gagan, M. K. (2000). Coral microatolls from the central Pacific record late Holocene El Niño. Geophysical Research Letters, 27: 1511-1514.
  • Johnson, B. J., Miller, G. H., Fogel, M. L., Magee, J. W., Gagan, M. K. & Chivas, A. R. (1999). 65,000 years of vegetation change in central Australia and the Australian summer monsoon. Science, 284: 1150-1152.
  • Gagan, M. K., Ayliffe, L. K., Hopley, D., Cali, J. A., Mortimer, G. E., Chappell, J., McCulloch, M. T. & Head, M. J. (1998). Temperature and surface-ocean water balance of the mid-Holocene tropical western Pacific. Science, 27: 1014-1018.
  • Gagan, M. K., Ayliffe, L. K., Anker, S., Hopley, D., McCulloch, M. T., Isdale, P. J., Chappell, J. & Head, M. J. (1997). Great Barrier Reef  'Climatic Optimum' at 5,800 yBP. PAGES news, 5(1): 15-16.
  • Gagan, M. K., Chivas, A. R. & Isdale, P. J. (1996). Timing coral-based climatic histories with 13C enrichments driven by synchronized spawning. Geology, 24: 1009-1012.
  • Larcombe, P., Carter, R. M., Dye, J., Gagan, M. K. & Johnson, D. P. (1995). The nature of postglacial sea-level change, central Great Barrier Reef, Australia. Marine Geology, 127: 1-44.
  • Gagan, M. K. & Chivas, A. R. (1995). Oxygen isotopes in western Australian coral reveal Pinatubo aerosol-induced cooling in the Western Pacific Warm Pool. Geophysical Research Letters, 22: 1069-1072.
  • Crowley, G. M. & Gagan , M. K. (1995). Holocene evolution of coastal wetlands in wet tropical northeastern Australia. The Holocene, 5: 385-399.
  • Bird, M. I., Summons, R. E., Gagan, M. K., Roksandic, L., Dowling, L., Head, J., Fifield, L. K., Cresswell, R. G. & Johnson, D. P. (1995). Terrestrial vegetation change inferred from n-alkane d13C analysis in the marine environment. Geochimica et Cosmochimica Acta, 59: 2853-2858.
  • McCulloch, M. T., Gagan, M. K., Mortimer, G. E., Chivas, A. R. & Isdale, P. J. (1994). A high-resolution Sr/Ca and d18O coral record from the Great Barrier Reef, Australia, and the 1982-1983 El Niño. Geochimica et Cosmochimica Acta, 58: 2747-2754.
  • Gagan, M. K., Johnson, D. P. & Crowley, G. M. (1994). Sea level control of stacked late Quaternary coastal sequences, central Great Barrier Reef. Sedimentology, 41: 329-351.
  • Gagan, M. K., Chivas, A. R. & Isdale, P. J. (1994). High-resolution isotopic records from corals using ocean temperature and mass-spawning chronometers. Earth and Planetary Science Letters, 121: 549-558.
  • Gagan, M. K., Chivas, A. R. & Herczeg, A. L. (1990). Shelf-wide erosion, deposition, and suspended sediment transport during Cyclone Winifred, central Great Barrier Reef shelf, Australia. Journal of Sedimentary Petrology, 60: 456-470.
  • Gagan, M. K., Johnson, D. P. & Carter, R. M. (1988). The Cyclone Winifred storm bed, central Great Barrier Reef shelf, Australia. Journal of Sedimentary Petrology, 58: 845-856.
  • Gagan, M. K., Sandstrom, M. W. & Chivas, A. R. (1987). Restricted terrestrial carbon input to the continental shelf during Cyclone Winifred: implications for terrestrial runoff to the Great Barrier Reef Province. Coral Reefs, 6: 113-119.

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