Upper Ruined Hut Bog, New Zealand 7,700 Year Dust Deposition Data Marx, S.K.; McGowan, H.A.; Kamber, B.A. Marx, S.K. McGowan, H.A. Kamber, B.A. earth science/paleoclimate/paleolimnology (depth,null,null,centimeter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (sample identification,null,null,null,null,paleolimnology,null,null,C,null) earth science/paleoclimate/paleolimnology (dust,null,null,gram per square meter per year,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (age,null,null,calendar year before present,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (Upper Ruined Hut Bog>LATITUDE -45.449>LONGITUDE 169.202) We report rates of Australian dust deposition in New Zealand over the last ~8000 years using records extracted from an ombrotrophic peat bog. The trace element chemistry of deposited dust is used to identify the Australian source areas, and to calculate Australian dust deposition rates in New Zealand. This is used to infer patterns of aridity and climate variability in eastern Australia during the Holocene. Prior to 4800 cal. BP, dust deposition patterns imply that the Australian climate was relatively wet due to an active/persistent monsoon. Southern Australian source regions supplied the majority of dust transported to New Zealand at this time. After 4800 cal. BP the Australian climate became significantly more arid and variable, attributed to the onset of ENSO-type conditions. The Lake Eyre Basin switched on as a dust source, while overall Australian dust deposition in New Zealand increased >4 times. Rates of Australian dust deposition were found to match patterns of increased ENSO variability, which is attributed to the combined effect of enhanced sediment supply to Australian dust source areas (during wet La Niña events) and preferable conditions for dust transport (during El Niño induced drought). Results also show that Australian dust deposition is a significant sedimentary process in New Zealand and is likely to influence both geochemical cycles and soil development suggesting that it may contribute up to 90% of material in the bog. STUDY NOTES: Dust deposition data from Upper Ruined Hut Bog, South Island, New Zealand for the past 7,700 years. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Marx, S.K. Investigator : McGowan, H.A. Investigator : Kamber, B.A. 2017-07-10 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/22410 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/australia/ruined2009dust.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/australia/ruined2009dust.txt English https://www.ncdc.noaa.gov/paleo/study/22410 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/australia/ruined2009dust.txt Samuel K. Marx, Hamish A. McGowan, Balz S. Kamber2009Long-range dust transport from eastern Australia: A proxy for Holocene aridity and ENSO-type climate variabilityEarth and Planetary Science Letters2821-4167-17710.1016/j.epsl.2009.03.013http://www.sciencedirect.com/science/article/pii/S0012821X09001563 START YEAR: 7778 cal yr BP * END YEAR: 133 cal yr BP 169.202 -45.449 169.202 -45.449