Michael K Gagan
Biographic Data
| ID | 5641805 |
|---|---|
| NAME | Michael K Gagan |
| GIVEN NAMES | Michael K |
| FAMILY NAME | Gagan |
| SIGNATURE | GAGAN M K |
| AFFILIATIONS | Australian National University |
| ORCID | 0000-0002-8279-323X |
| VERIFIED | Yes |
| TOTAL WORKS | 10 |
| TOTAL CITATIONS | 62 |
| WORKS AS AUTHOR | 10 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1995 |
| LATEST PUBLICATION YEAR | 2024 |
| H-INDEX | 3 |
Tropical vegetation productivity and atmospheric methane over the last 40,000 years from model simulations and stalagmites in Sulawesi, Indonesia
Recent research has shown the potential of speleothem δ 13 C to record a range of environmental processes. Here, we report on 230 Th-dated stalagmite δ 13 C records for southwest Sulawesi, Indonesia, over the last 40,000 yr to investigate the relationship between tropical vegetation productivity and atmospheric methane concentrations. We demonstrate that the Sulawesi stalagmite δ 13 C record is driven by changes in vegetation productivity and soi…
Early Goats in Bali, Indonesia
Two thousand years ago, maritime trade flourished in Southeast Asia and archaeological excavations have revealed that Island Southeast Asia played an important role within developing trading networks. The sites of Sembiran and Pacung on the north coast of Bali, Indonesia, have produced a wide range of artifacts that demonstrate links to mainland and island Asia. Here, we examine faunal remains from these sites to assess the role that livestock pl…
Investigating the presence of foreigners and pig husbandry in ancient Bali
Preliminary U-series and Thermoluminescence dating of excavated deposits in Liang Bua sub-chamber, Flores, Indonesia
Distinct climate change synchronous with Heinrich event one, recorded by stable oxygen and carbon isotopic compositions in stalagmites from China
Uranium-series dating of oxygen and carbon isotope records for stalagmite SJ3 collected in Songjia Cave, central China, shows significant variation in past climate and environment during the period 20–10 ka. Stalagmite SJ3 is located more than 1000 km inland of the coastal Hulu Cave in East China and more than 700 km north of the Dongge Cave in Southwest China and despite minor differences, displays a clear first-order similarity with the Hulu an…
Prehistoric maritime migration in the Pacific islands
Long-distance human migration across the Pacific Ocean occurred during the late Holocene and originated almost entirely in the west. As prevailing tradewinds blow from the east, the mechanisms of prehistoric seafaring have been debated since the sixteenth century. Inadequacies in propositions of accidental or opportunistic drifting on occasional westerlies were exposed by early computer simulation. Experimental voyaging in large, fast, weatherly …
Carbon isotope evidence for an abrupt reduction in grasses coincident with European settlement of Lake Eyre, South Australia
Stable carbon isotopes in emu eggshell (EES) reflect emu diets and consequently the vegetation available for food sources. At Lake Eyre, South Australia, isotopic data suggest that there has been a rapid and dramatic change in vegetation at some point over the last 200 years when compared with the rest of the Holocene. The proportion of C 4 plants in emu diets has been reduced by approximately 20% in response to an overall shift in C 4 /C3 biomas…
Post-glacial evolution of the Indo-Pacific Warm Pool and El Niño-Southern oscillation
Chronological control of coral records using luminescent lines and evidence for non-stationary Enso teleconnections in northeast Australia
Eight, multicentury, Porites coral cores were used to develop a 373-year chronology by cross-dating techniques adapted from dendrochronology.Characteristic patterns of distinct luminescent lines within the coral skeletons were matched between coral cores from inshore and mid-shelf reefs in the central Great Barrier Reef, Australia. Skeleton-plots of luminescent banding were produced for each core and combined into a master chronology back to ad 1…
Holocene evolution of coastal wetlands in wet-tropical northeastern Australia
Pollen in sediments drilled from the Innisfail coastal plain, northeast Queensland, Australia, was examined to reconstruct the evolution of Holocene wetlands in a wet-tropical environment. In contrast to monsoonal Australia, stable environmental conditions created by year-round rainfall and low tidal range caused abrupt, unidirectional transitions in wetland zonation as marine influence changed. This has enabled a detailed reconstruction of the m…
Prehistoric maritime migration in the Pacific islands
Long-distance human migration across the Pacific Ocean occurred during the late Holocene and originated almost entirely in the west. As prevailing tradewinds blow from the east, the mechanisms of prehistoric seafaring have been debated since the sixteenth century. Inadequacies in propositions of accidental or opportunistic drifting on occasional westerlies were exposed by early computer simulation. Experimental voyaging in large, fast, weatherly …
Holocene evolution of coastal wetlands in wet-tropical northeastern Australia
Pollen in sediments drilled from the Innisfail coastal plain, northeast Queensland, Australia, was examined to reconstruct the evolution of Holocene wetlands in a wet-tropical environment. In contrast to monsoonal Australia, stable environmental conditions created by year-round rainfall and low tidal range caused abrupt, unidirectional transitions in wetland zonation as marine influence changed. This has enabled a detailed reconstruction of the m…
Preliminary U-series and Thermoluminescence dating of excavated deposits in Liang Bua sub-chamber, Flores, Indonesia
Early Goats in Bali, Indonesia
Two thousand years ago, maritime trade flourished in Southeast Asia and archaeological excavations have revealed that Island Southeast Asia played an important role within developing trading networks. The sites of Sembiran and Pacung on the north coast of Bali, Indonesia, have produced a wide range of artifacts that demonstrate links to mainland and island Asia. Here, we examine faunal remains from these sites to assess the role that livestock pl…
Chronological control of coral records using luminescent lines and evidence for non-stationary Enso teleconnections in northeast Australia
Eight, multicentury, Porites coral cores were used to develop a 373-year chronology by cross-dating techniques adapted from dendrochronology.Characteristic patterns of distinct luminescent lines within the coral skeletons were matched between coral cores from inshore and mid-shelf reefs in the central Great Barrier Reef, Australia. Skeleton-plots of luminescent banding were produced for each core and combined into a master chronology back to ad 1…
Carbon isotope evidence for an abrupt reduction in grasses coincident with European settlement of Lake Eyre, South Australia
Stable carbon isotopes in emu eggshell (EES) reflect emu diets and consequently the vegetation available for food sources. At Lake Eyre, South Australia, isotopic data suggest that there has been a rapid and dramatic change in vegetation at some point over the last 200 years when compared with the rest of the Holocene. The proportion of C 4 plants in emu diets has been reduced by approximately 20% in response to an overall shift in C 4 /C3 biomas…
Holocene evolution of coastal wetlands in wet-tropical northeastern Australia
Pollen in sediments drilled from the Innisfail coastal plain, northeast Queensland, Australia, was examined to reconstruct the evolution of Holocene wetlands in a wet-tropical environment. In contrast to monsoonal Australia, stable environmental conditions created by year-round rainfall and low tidal range caused abrupt, unidirectional transitions in wetland zonation as marine influence changed. This has enabled a detailed reconstruction of the m…
Chronological control of coral records using luminescent lines and evidence for non-stationary Enso teleconnections in northeast Australia
Eight, multicentury, Porites coral cores were used to develop a 373-year chronology by cross-dating techniques adapted from dendrochronology.Characteristic patterns of distinct luminescent lines within the coral skeletons were matched between coral cores from inshore and mid-shelf reefs in the central Great Barrier Reef, Australia. Skeleton-plots of luminescent banding were produced for each core and combined into a master chronology back to ad 1…
Post-glacial evolution of the Indo-Pacific Warm Pool and El Niño-Southern oscillation
Carbon isotope evidence for an abrupt reduction in grasses coincident with European settlement of Lake Eyre, South Australia
Stable carbon isotopes in emu eggshell (EES) reflect emu diets and consequently the vegetation available for food sources. At Lake Eyre, South Australia, isotopic data suggest that there has been a rapid and dramatic change in vegetation at some point over the last 200 years when compared with the rest of the Holocene. The proportion of C 4 plants in emu diets has been reduced by approximately 20% in response to an overall shift in C 4 /C3 biomas…
Prehistoric maritime migration in the Pacific islands
Long-distance human migration across the Pacific Ocean occurred during the late Holocene and originated almost entirely in the west. As prevailing tradewinds blow from the east, the mechanisms of prehistoric seafaring have been debated since the sixteenth century. Inadequacies in propositions of accidental or opportunistic drifting on occasional westerlies were exposed by early computer simulation. Experimental voyaging in large, fast, weatherly …
Distinct climate change synchronous with Heinrich event one, recorded by stable oxygen and carbon isotopic compositions in stalagmites from China
Uranium-series dating of oxygen and carbon isotope records for stalagmite SJ3 collected in Songjia Cave, central China, shows significant variation in past climate and environment during the period 20–10 ka. Stalagmite SJ3 is located more than 1000 km inland of the coastal Hulu Cave in East China and more than 700 km north of the Dongge Cave in Southwest China and despite minor differences, displays a clear first-order similarity with the Hulu an…
Preliminary U-series and Thermoluminescence dating of excavated deposits in Liang Bua sub-chamber, Flores, Indonesia
Investigating the presence of foreigners and pig husbandry in ancient Bali
Early Goats in Bali, Indonesia
Two thousand years ago, maritime trade flourished in Southeast Asia and archaeological excavations have revealed that Island Southeast Asia played an important role within developing trading networks. The sites of Sembiran and Pacung on the north coast of Bali, Indonesia, have produced a wide range of artifacts that demonstrate links to mainland and island Asia. Here, we examine faunal remains from these sites to assess the role that livestock pl…
Tropical vegetation productivity and atmospheric methane over the last 40,000 years from model simulations and stalagmites in Sulawesi, Indonesia
Recent research has shown the potential of speleothem δ 13 C to record a range of environmental processes. Here, we report on 230 Th-dated stalagmite δ 13 C records for southwest Sulawesi, Indonesia, over the last 40,000 yr to investigate the relationship between tropical vegetation productivity and atmospheric methane concentrations. We demonstrate that the Sulawesi stalagmite δ 13 C record is driven by changes in vegetation productivity and soi…
Geology (7 works) · Geology and Paleoclimatology Research (7 works) · Archaeology (6 works) · Geography (6 works) · Holocene (6 works) · Climatology (5 works) · Paleontology (5 works) · Ecology (4 works) · Glacial period (4 works) · Oceanography (4 works)