https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 A community-based geological reconstruction of Antarctic ice sheet deglaciation since the last glacial maximum https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:18057 Wed 11 Apr 2018 11:55:12 AEST ]]> Sulphate concentration in cave dripwater and speleothems: Long-term trends and overview of its significance as proxy for environmental processes and climate changes https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:28323 14C bomb peak, its Anthropocene peak can be used to date recent cave formations. However, the transmission of S from the atmosphere to cave dripwater and its incorporation in speleothems is subjected to biogeochemical cycling and accurate studies of each cave site are needed in order to assess how the S atmospheric signal is modified and eventually encoded in speleothems. This study investigates the role of biogeochemical cycling and aquifer hydrology by utilising published and new dripwater and speleothem data from Grotta di Ernesto (ER) in northern Italy. Here we provide the first long-term record of sulphate concentration in cave dripwater based on over 20 years of measurements. Fast drip site st-ER1 is characterised by a continuous decrease in SO4 concentration from a high of 7.5±0.8mg/l in 1993-1994 to a low of 2.2±0.2mg/l in 2013-2014, and replicates with a delay of ~15 years the decline in the atmospheric SO2 emissions. The S-series of slow flow ER78 site is further delayed by ~4.5 years in relation to the S retention in the aquifer matrix. The dripwater data are used to extend the previously published S record (1810-1998 AD) of stalagmite ER78 and reconstruct the anthropogenic S-peak: this displays a delay of ~20 years with respect to the atmospheric S emission peak due to biogeochemical cycling and aquifer storage. However, sulphur recycling above the cave did not operate with the same degree of efficiency through time, which resulted in a variable time delay between S deposition and incorporation into the stalagmite. In the pre-Anthropocene era, and in particular during the cold Little Ice Age, biogeochemical cycling was far less efficient than today, and the fast transmission of the atmospheric signal allowed capture of S released during major volcanic eruptions by stalagmites.]]> Wed 05 Jul 2017 11:19:29 AEST ]]> Controls on rainfall variability in the tropical South Pacific for the last 350 years reconstructed from oxygen isotopes in stalagmites from the Cook Islands https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47316 Tue 30 Apr 2024 09:51:07 AEST ]]> Climate variability on the Adriatic seaboard during the last glacial inception and MIS 5c from Frasassi Cave stalagmite record https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36369 Thu 02 Apr 2020 13:48:31 AEDT ]]> Last interglacial hydroclimate in the Italian Prealps reconstructed from speleothem multi-proxy records (Bigonda Cave, NE Italy) https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49220 Sun 07 May 2023 09:37:55 AEST ]]> Millennial-scale climate variability during the Last Interglacial recorded in a speleothem from south-western France https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:8023 Sat 24 Mar 2018 08:36:49 AEDT ]]> Terrestrial and submarine evidence for the extent and timing of the last glacial maximum and the onset of deglaciation on the maritime-Antarctic and sub-Antarctic islands https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20805 Sat 24 Mar 2018 08:05:53 AEDT ]]> Late Quaternary fire regimes of Australasia https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:18167 Sat 24 Mar 2018 08:04:38 AEDT ]]> Regional climate variability and ecosystem responses to the last deglaciation in the northern hemisphere from stable isotope data and calcite fabrics in two northern Adriatic stalagmites https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:19954 Sat 24 Mar 2018 07:58:33 AEDT ]]> Climate variability over the last 35,000 years recorded in marine and terrestrial archives in the Australian region: an OZ-INTIMATE compilation https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:19826 Sat 24 Mar 2018 07:56:55 AEDT ]]> Molecular organic matter in speleothems and its potential as an environmental proxy https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:5532 100 ka), can be recovered at temporal resolutions of < 10 yr, and show meaningful changes through time. This approach is therefore of considerable potential value to Quaternary science.]]> Sat 24 Mar 2018 07:46:41 AEDT ]]> Enhanced rainfall in the Western Mediterranean during deposition of sapropel S1: stalagmite evidence from Corchia cave (Central Italy) https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:3317 Sat 24 Mar 2018 07:23:18 AEDT ]]> A high resolution late Holocene palaeo environmental record from the central Adriatic Sea https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:3397 Sat 24 Mar 2018 07:21:39 AEDT ]]> "Cryptic" diagenesis and its implications for speleothem geochronologies https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:25047 Sat 24 Mar 2018 07:10:46 AEDT ]]> Recharge variability in Australia's southeast alpine region derived from cave monitoring and modern stalagmite δ<sup>18</sup>O records https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52766 Mon 29 Jan 2024 18:40:13 AEDT ]]> Crystallization pathways, fabrics and the capture of climate proxies in speleothems: examples from the tropics https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50776 Mon 22 Apr 2024 11:47:11 AEST ]]>