B. E. Rosenheim
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View article: Balanced riverine export of millennial and decadal carbon from the Amazon Basin
Balanced riverine export of millennial and decadal carbon from the Amazon Basin Open
View article: Dynamic subglacial meltwater history archived in Antarctic subglacial lake sediments
Dynamic subglacial meltwater history archived in Antarctic subglacial lake sediments Open
There is a paucity of records on decadal to millennial scales archiving the evolution of the Antarctic subglacial hydrologic system, leaving a gap in our knowledge of the links between meltwater drainage and ice behavior. We employed a sui…
View article: Deep-sea stylasterid <i>δ</i> <sup>18</sup> O and <i>δ</i> <sup>13</sup> C maps inform sampling scheme for paleotemperature reconstructions
Deep-sea stylasterid <i>δ</i> <sup>18</sup> O and <i>δ</i> <sup>13</sup> C maps inform sampling scheme for paleotemperature reconstructions Open
Deep-sea corals have the potential to provide high-resolution paleotemperature records to evaluate oceanographic changes in settings that are vulnerable to current and future ocean warming. The isotopic records preserved in coral skeletal …
View article: Holocene paleoceanographic variability in Robertson Bay, Ross Sea, Antarctica: A marine record of ocean, ice sheet, and climate connectivity
Holocene paleoceanographic variability in Robertson Bay, Ross Sea, Antarctica: A marine record of ocean, ice sheet, and climate connectivity Open
View article: Revised constraints on the final stages of the last deglaciation from high-resolution sea-level observations
Revised constraints on the final stages of the last deglaciation from high-resolution sea-level observations Open
The rapid transformation of the ocean-atmosphere-cryosphere system during the last deglaciation serves as a potential model for climate change during this century and beyond. Within this context, sea-level change can be viewed as the conne…
View article: ADVANCING ANTARCTIC SEDIMENT CHRONOLOGY THROUGH COMBINED RAMPED PYROLYSIS OXIDATION AND PYROLYSIS-GC-MS
ADVANCING ANTARCTIC SEDIMENT CHRONOLOGY THROUGH COMBINED RAMPED PYROLYSIS OXIDATION AND PYROLYSIS-GC-MS Open
Radiocarbon ( 14 C) dating of sediment deposition around Antarctica is often challenging due to heterogeneity in sources and ages of organic carbon in the sediment. Chemical and thermochemical techniques have been used to separate organic …
View article: Constraints on the Timing and Extent of Deglacial Grounding Line Retreat in West Antarctica
Constraints on the Timing and Extent of Deglacial Grounding Line Retreat in West Antarctica Open
Projections of Antarctica's contribution to future sea level rise are associated with significant uncertainty, in part because the observational record is too short to capture long‐term processes necessary to estimate ice mass changes over…
View article: The life and death of a subglacial lake in West Antarctica
The life and death of a subglacial lake in West Antarctica Open
Over the past 50 years, the discovery and initial investigation of subglacial lakes in Antarctica have highlighted the paleoglaciological information that may be recorded in sediments at their beds. In December 2018, we accessed Mercer Sub…
View article: Data for Siegfried*, Venturelli*, et al., 2023, Geology
Data for Siegfried*, Venturelli*, et al., 2023, Geology Open
Datasets used in Siegfried*, Venturelli*, et al. (2023). The life and death of a subglacial lake in West Antarctica, Geology, doi: 10.1130/G50995.1. See top-level readme.md file for more information about the types of data and dat…
View article: Data for Siegfried*, Venturelli*, et al., 2023, Geology
Data for Siegfried*, Venturelli*, et al., 2023, Geology Open
Datasets used in Siegfried*, Venturelli*, et al. (2023). The life and death of a subglacial lake in West Antarctica, Geology, doi: 10.1130/G50995.1. See top-level readme.md file for more information about the types of data and dat…
View article: Biogeochemical and historical drivers of microbial community composition and structure in sediments from Mercer Subglacial Lake, West Antarctica
Biogeochemical and historical drivers of microbial community composition and structure in sediments from Mercer Subglacial Lake, West Antarctica Open
Ice streams that flow into Ross Ice Shelf are underlain by water-saturated sediments, a dynamic hydrological system, and subglacial lakes that intermittently discharge water downstream across grounding zones of West Antarctic Ice Sheet (WA…
View article: Know Before You Go: A Community-Derived Approach to Planning for and Preventing Sexual Harassment at Oceanographic Field Sites
Know Before You Go: A Community-Derived Approach to Planning for and Preventing Sexual Harassment at Oceanographic Field Sites Open
Sexual harassment is a pervasive problem on oceanographic research vessels and while conducting fieldwork in general. A variety of factors contribute to inadequate protection against sexual harassment, such as poor training in prevention, …
View article: Millennial scale marine incursion into an isolated environment fuels a contemporary subglacial microbial community beneath the West Antarctic Ice Sheet
Millennial scale marine incursion into an isolated environment fuels a contemporary subglacial microbial community beneath the West Antarctic Ice Sheet Open
View article: Global fjords as transitory reservoirs of labile organic carbon modulated by organo-mineral interactions
Global fjords as transitory reservoirs of labile organic carbon modulated by organo-mineral interactions Open
The global carbon cycle is strongly modulated by organic carbon (OC) sequestration and decomposition. Whereas OC sequestration is relatively well constrained, there are few quantitative estimates of its susceptibility to decomposition. Fjo…
View article: Deep-sea stylasterid δ <sup>18</sup> O and δ <sup>13</sup> C maps inform sampling scheme for paleotemperature reconstructions
Deep-sea stylasterid δ <sup>18</sup> O and δ <sup>13</sup> C maps inform sampling scheme for paleotemperature reconstructions Open
Deep-sea corals have the potential to provide high resolution paleotemperature records to evaluate oceanographic changes in settings that are vulnerable to current and future warming. The geochemical records preserved in coral skeletal car…
View article: History of Anvers-Hugo Trough, western Antarctic Peninsula shelf, since the Last Glacial Maximum. Part I: Deglacial history based on new sedimentological and chronological data
History of Anvers-Hugo Trough, western Antarctic Peninsula shelf, since the Last Glacial Maximum. Part I: Deglacial history based on new sedimentological and chronological data Open
Reconstructing the advance and retreat of past ice sheets provides important long-term context for recent change(s) and enables us to better understand ice sheet responses to forcing mechanisms and external boundary conditions that regulat…
View article: History of Anvers-Hugo Trough, western Antarctic Peninsula shelf, since the Last Glacial Maximum. Part II: Palaeo-productivity and palaeoceanographic changes during the Last Glacial Transition
History of Anvers-Hugo Trough, western Antarctic Peninsula shelf, since the Last Glacial Maximum. Part II: Palaeo-productivity and palaeoceanographic changes during the Last Glacial Transition Open
Following the Last Glacial Maximum (LGM; ca. 23-19 calibrated [cal.] kyr before present [BP]), atmospheric and oceanic warming, together with global sea-level rise, drove widespread deglaciation of the Antarctic Ice Sheet, increasing the f…
View article: A transitory pool of labile organic carbon hosted in global fjords revealed by thermal pyrolytic decomposition analysis
A transitory pool of labile organic carbon hosted in global fjords revealed by thermal pyrolytic decomposition analysis Open
View article: Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations
Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations Open
The Subglacial Antarctic Lakes Scientific Access (SALSA) Project accessed Mercer Subglacial Lake using environmentally clean hot-water drilling to examine interactions among ice, water, sediment, rock, microbes and carbon reservoirs within…
View article: History of the Larsen C Ice Shelf reconstructed from sub–ice shelf and offshore sediments
History of the Larsen C Ice Shelf reconstructed from sub–ice shelf and offshore sediments Open
Because ice shelves respond to climatic forcing over a range of time scales, from years to millennia, an understanding of their long-term history is critically needed for predicting their future evolution. We present the first detailed rec…
View article: Engineered Continental‐Scale Rivers Can Drive Changes in the Carbon Cycle
Engineered Continental‐Scale Rivers Can Drive Changes in the Carbon Cycle Open
Floodplains of large alluvial rivers modulate the composition of riverine organic carbon (OC) and control OC oxidative loss, constituting a critical component in the global river‐atmosphere‐ocean carbon cycle. Therefore, anthropogenic mana…
View article: Mid‐Holocene Grounding Line Retreat and Readvance at Whillans Ice Stream, West Antarctica
Mid‐Holocene Grounding Line Retreat and Readvance at Whillans Ice Stream, West Antarctica Open
Understanding ice sheet evolution through the geologic past can help constrain ice sheet models that predict future ice dynamics. Existing geological records of grounding line retreat in the Ross Sea, Antarctica, have been confined to ice‐…
View article: Stylasterid corals: A new paleotemperature archive
Stylasterid corals: A new paleotemperature archive Open
View article: Increasing Rates of Carbon Burial in Southwest Florida Coastal Wetlands
Increasing Rates of Carbon Burial in Southwest Florida Coastal Wetlands Open
Rates of organic carbon (OC) burial in some coastal wetlands appear to be greater in recent years than they were in the past. Possible explanations include ongoing mineralization of older OC or the influence of an unaccounted‐for artifact …
View article: Microbial Fe(III) reduction as a potential iron source from Holocene sediments beneath Larsen Ice Shelf
Microbial Fe(III) reduction as a potential iron source from Holocene sediments beneath Larsen Ice Shelf Open
View article: Effects of Improved <sup>17</sup>O Correction on Interlaboratory Agreement in Clumped Isotope Calibrations, Estimates of Mineral‐Specific Offsets, and Temperature Dependence of Acid Digestion Fractionation
Effects of Improved <sup>17</sup>O Correction on Interlaboratory Agreement in Clumped Isotope Calibrations, Estimates of Mineral‐Specific Offsets, and Temperature Dependence of Acid Digestion Fractionation Open
The clumped isotopic composition of carbonate‐derived CO 2 (denoted Δ 47 ) is a function of carbonate formation temperature and in natural samples can act as a recorder of paleoclimate, burial, or diagenetic conditions. The absolute abunda…
View article: Petrocarbon evolution: Ramped pyrolysis/oxidation and isotopic studies of contaminated oil sediments from the Deepwater Horizon oil spill in the Gulf of Mexico
Petrocarbon evolution: Ramped pyrolysis/oxidation and isotopic studies of contaminated oil sediments from the Deepwater Horizon oil spill in the Gulf of Mexico Open
Hydrocarbons released during the Deepwater Horizon (DWH) oil spill weathered due to exposure to oxygen, light, and microbes. During weathering, the hydrocarbons' reactivity and lability was altered, but it remained identifiable as "petroca…
View article: Large‐Scale Intrusion of Circumpolar Deep Water on Antarctic Margin Recorded by Stylasterid Corals
Large‐Scale Intrusion of Circumpolar Deep Water on Antarctic Margin Recorded by Stylasterid Corals Open
We present centennial‐scale radiocarbon ( 14 C) records archived by deep sea stylasterid corals from the outer shelf and upper slope of the Antarctic margin. These novel stylasterids ( Errina spp.) were collected from the western Ross Sea …
View article: A centuries-long delay between a paleo-ice-shelf collapse and grounding-line retreat in the Whales Deep Basin, eastern Ross Sea, Antarctica
A centuries-long delay between a paleo-ice-shelf collapse and grounding-line retreat in the Whales Deep Basin, eastern Ross Sea, Antarctica Open
View article: Mangrove sediment carbon stocks along an elevation gradient: Influence of the late Holocene marine regression (New Caledonia)
Mangrove sediment carbon stocks along an elevation gradient: Influence of the late Holocene marine regression (New Caledonia) Open