Brendan Reilly

Brendan Reilly
Lamont - Doherty Earth Observatory Columbia University

Doctor of Philosophy

About

147
Publications
17,168
Reads
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604
Citations
Citations since 2016
143 Research Items
596 Citations
2016201720182019202020212022020406080100120
2016201720182019202020212022020406080100120
2016201720182019202020212022020406080100120
2016201720182019202020212022020406080100120

Publications

Publications (147)
Article
Over the last decade, two major calving events of the Petermann Ice Tongue in Northwest Greenland have led to speculation on its future stability and contribution to further Greenland Ice Sheet mass loss. However, it has been unclear if these events are anomalous or typical within the context of limited historical observations. We extend the histor...
Article
Full-text available
International Ocean Discovery Program (IODP) Expedition 382 in the Scotia Sea’s Iceberg Alley recovered among the most continuous and highest resolution stratigraphic records in the Southern Ocean near Antarctica spanning the last 3.3 Myr. Sites drilled in Dove Basin (U1536/U1537) have well‐resolved magnetostratigraphy and a strong imprint of orbit...
Article
We document magnetic mineral diagenesis with high resolution magnetic susceptibility, hysteresis, isothermal remanent magnetization, and other rock magnetic measurements through a shallow sulfate‐methane transition (SMT) at Perseverance Drift—a high‐accumulation rate Holocene biosiliceous Antarctic marine sediment deposit. The structure of the SMT...
Article
Full-text available
Antarctica is one of the most vulnerable regions to climate change on Earth and studying the past and present responses of this polar marine ecosystem to environmental change is a matter of urgency. Sedimentary ancient DNA (sedaDNA) analysis can provide such insights into past ecosystem-wide changes. Here we present authenticated (through extensive...
Article
Relative Sea Levels (RSLs) derived primarily from marine bivalves near Petermann Glacier, NW Greenland, constrain past regional ice-mass changes through glacial isostatic adjustment (GIA) modeling. Oxygen isotopes measured on bivalves corrected for shell-depth habitat and document changing meltwater input. Rapid RSL fall of up to 62 m/kyr indicates...
Article
Full-text available
Early Pleistocene Marine Isotope Stage (MIS)‐31 (1.081–1.062 Ma) is a unique interval of extreme global warming, including evidence of a West Antarctic Ice Sheet (WAIS) collapse. Here we present a new 1,000‐year resolution, spanning 1.110–1.030 Ma, diatom‐based reconstruction of primary productivity, relative sea surface temperature changes, sea‐ic...
Conference Paper
The Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages and their role in inbuencing the carbon cycle. We report the crst high-resolution record of dust deposition and ocean productivity for the Antarctic Zone, close to the main dust source, Patagonia (Fig...
Article
Full-text available
Ice loss in the Southern Hemisphere has been greatest over the past 30 years in West Antarctica. The high sensitivity of this region to climate change has motivated geologists to examine marine sedimentary records for evidence of past episodes of West Antarctic Ice Sheet (WAIS) instability. Sediments accumulating in the Scotia Sea are useful to exa...
Article
Full-text available
Based on sediment cores and geophysical data collected from Petermann Fjord and northern Nares Strait, NW Greenland, an Arctic ice shelf sediment facies is presented that distinguishes sub and pro ice shelf environments. Sediment cores were collected from sites beneath the present day Petermann Ice Tongue (PIT) and in deglacial sediments of norther...
Article
Full-text available
During the last deglaciation substantial volumes of meltwater from the decaying Laurentide Ice Sheet were supplied to the Arctic, Gulf of Mexico and North Atlantic along different drainage routes, sometimes as catastrophic flood events. These events are suggested to have impacted global climate, for example initiating the Younger Dryas cold period....
Article
Full-text available
The Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages and their role in influencing the carbon cycle. We report a high-resolution record of dust deposition and ocean productivity for the Antarctic Zone, close to the main dust source, Patagonia. Our deep-...
Conference Paper
Recent advancements in marine sedimentary ancient DNA (sedaDNA) techniques now enable detection of rare eukaryote taxa in deep ocean sediments. To be determined, however, is how far back in time these taxa can be detected. Here, we present the first authenticated (through sedaDNA damage analysis) metagenomic marine eukaryote sedaDNA from the Scotia...
Conference Paper
The Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages and their role in influencing the carbon cycle. We report the first high-resolution record of dust deposition and ocean productivity for the Antarctic Zone, close to the main dust source, Patagonia. O...
Conference Paper
The eastern Scotia Sea is known as Iceberg Alley, where large numbers of icebergs are brought to the Antarctic Circumpolar Current via the Weddell Sea Gyre. Icebergs transported through Iceberg Alley today can have traveled in the coastal current from anywhere around the Antarctica margin, but are sourced mostly from the Weddell Sea sector. The Wed...
Conference Paper
The Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages and their role in influencing the carbon cycle. We report the first high-resolution record of dust deposition and ocean productivity for the Antarctic Zone, close to the main dust source, Patagonia. O...
Conference Paper
IODP Exp. 382 in the Scotia Sea’s Iceberg Alley recovered among the most continuous and highest resolution stratigraphic records in the Southern Ocean near Antarctica from 3.3 Ma to present. These deep sea contourite deposits have lithologic alternations between terrigenous and diatomaceous facies which reflect Antarctic Ice Sheet and Southern Ocea...
Article
International Ocean Drilling Program (IODP) Expedition 341 recovered sediments from the south Alaska continental slope that preserves a well resolved and dated inclination record over most of the past ∼43,000 years. The Site U1419 chronology (Walczak et al., 2020) is among the highest resolution in the world, constrained by 173 radiocarbon dates, p...
Preprint
Full-text available
The Antarctic Circumpolar Current (ACC) acts as a critical component to regulate the global thermohaline circulation and climate. However, active debate remains about the relative strength of ACC during current/past warm periods and underlying driving mechanisms. Here, we present sortable silt mean grain size records from the Scotia Sea to infer th...
Article
Full-text available
The Petermann 2015 expedition to Petermann Fjord and adjacent Hall Basin recovered a transect of cores, extending from Nares Strait to underneath the 48 km long ice tongue of Petermann glacier, offering a unique opportunity to study ice–ocean–sea ice interactions at the interface of these realms. First results suggest that no ice tongue existed in...
Conference Paper
Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages and their role in influencing the carbon cycle. We report the first high-resolution record of dust deposition and ocean productivity for the Antarctic Zone, close to the main dust source, Patagonia. Our d...
Article
Full-text available
The northern sector of the Greenland Ice Sheet is considered to be particularly susceptible to ice mass loss arising from increased glacier discharge in the coming decades. However, the past extent and dynamics of outlet glaciers in this region, and hence their vulnerability to climate change, are poorly documented. In the summer of 2019, the Swedi...
Chapter
Full-text available
International Ocean Discovery Program (IODP) Site U1536 (proposed Site SCO-13) is located 235 km northwest of the South Orkney Islands at 59°26.46′S, 41°3.66′W in 3220 m of water. Site U1536 is the first of two sites drilled in Dove Basin, which is located in the southern Scotia Sea. This site was targeted to recover a com- plete Neogene record of...
Chapter
Full-text available
International Ocean Discovery Program (IODP) Site U1535 (proposed Site SFSD-02A) is located on the northern flank of a large trough ~668 km east of the Strait of Magellan at 53°11.49′S, 58°38.60′W in 647 m of water. The site is situated at Common Depth Point 9220 on Seismic Reflection Profile SGFI93-107. Site U1535 is the second of a pair of sites....
Chapter
Full-text available
This section provides an overview of operations, depth conven- tions, core handling, curatorial procedures, and analyses performed on the R/V JOIDES Resolution during International Ocean Discov- ery Program (IODP) Expedition 382. This information applies only to shipboard work described in the Expedition reports section of the Expedition 382 Procee...
Book
Full-text available
International Ocean Discovery Program Expedition 382, Iceberg Alley and Subantarctic Ice and Ocean Dynamics, investigated the long-term climate history of Antarctica, seeking to understand how polar ice sheets responded to changes in insolation and atmospheric CO2 in the past and how ice sheet evolution influenced global sea level and vice versa. F...
Chapter
Full-text available
International Ocean Drilling Program (IODP) Site U1538 (pro- posed Site SCO-11) is located 365 km north-northeast of the South Orkney Islands at 57°26.52′S, 43°21.47′W in 3131 m of water. The site lies in Pirie Basin and is situated at Shotpoint 4900 on Seismic Reflection Profile SCAN2013-13, 9 km east of Crossing Line SCAN2013-11. Site U1538 is lo...
Chapter
Full-text available
International Ocean Discovery Program (IODP) Site U1534 (proposed Site SFSD-03A) is located at 53°11.38′S, 58°45.65′W in 605 m of water. The site is situated on the northern flank of an east– west trending trough on the continental shelf ~660 km east of the Strait of Magellan at Common Depth Point 10005 on Seismic Re- flection Profile SGFI93. Site...
Chapter
Full-text available
International Ocean Discovery Program Expedition 382, Ice- berg Alley and Subantarctic Ice and Ocean Dynamics, investigated the long-term climate history of Antarctica, seeking to understand how polar ice sheets responded to changes in insolation and atmo- spheric CO2 in the past and how ice sheet evolution influenced global sea level and vice vers...
Chapter
Full-text available
International Ocean Drilling Program (IODP) Site U1537 (pro- posed Site SCO-18) is located 265 km northwest of the South Or- kney Islands at 59°6.65′S, 40°54.37′W in 3713 m of water. The site lies in the northeast part of Dove Basin in a ~1 km thick contourite drift and is situated at Shotpoint 4900 on Multichannel Seismic (MCS) Reflection Profile...
Preprint
Full-text available
The northern sector of the Greenland ice sheet is considered to be particularly susceptible to ice mass loss arising from increased glacier discharge in the coming decades. However, the past extent and dynamics of outlet glaciers in this region, and hence their vulnerability to climate change, are poorly documented. In the summer of 2019, the Swedi...
Preprint
Full-text available
The Petermann 2015 Expedition to Petermann Fjord and adjacent Hall Basin recovered a transect of cores from Nares Strait to under the 48 km long ice tongue of Petermann glacier, offering a unique opportunity to study ice-ocean-sea ice interactions at the interface of these realms. First results suggest that no ice tongue existed in Petermann Fjord...
Article
Full-text available
Scotia Sea and the Drake Passage is key towards understanding the development of modern oceanic circulation patterns and their implications for ice sheet growth and decay. The sedimentary record of the southern Scotia Sea basins documents the regional tectonic, oceanographic and climatic evolution since the Eocene. However, a lack of accurate age e...
Conference Paper
Full-text available
Location, Location, Location: Turbidite stratigraphy at the interface between paleoseismic and paleoclimate records C. Goldfinger. M. Walczak, V. Sahakian, Brendan Reilly, Saray Valdez Hernandez Paleoseismic turbidites along the Cascadia margin are spatially restricted, more so than one might expect. Excellent high-resolution records are found in...
Conference Paper
Magnetic susceptibility (k) records from Scotia Sea deep water contourites are remarkably similar to atmospheric dust flux records in East Antarctic ice cores, suggesting Scotia Sea contourite evolution and atmospheric dust transport are responding to common forcing mechanisms. Glacial-marine k records reflect the interplay of lithogenic sediment p...
Article
Full-text available
The processes controlling advance and retreat of outlet glaciers in fjords draining the Greenland Ice Sheet remain poorly known, undermining assessments of their dynamics and associated sea-level rise in a warming climate. Mass loss of the Greenland Ice Sheet has increased six-fold over the last four decades, with discharge and melt from outlet gla...
Article
Full-text available
Calving events of Petermann Glacier, northwest Greenland, in 2010 and 2012 reduced the length of its ice tongue by c. 25 km, allowing exploration of newly uncovered seafloor during the Petermann 2015 Expedition. This article presents the results of foraminiferal analysis and environmental data from thirteen surface sediment samples in northern Nare...
Article
Full-text available
Approximately 74 ka, Toba caldera in Sumatra, Indonesia, erupted in one of the most catastrophic supereruptions in Earth's history. Resurgent uplift of the caldera floor raised Samosir Island 700 m above Lake Toba, exposing valuable lake sediments. To constrain sediment chronology, we collected 173 discrete paleomagnetic 8 cm 3 cubes and 15 radioca...
Chapter
Full-text available
International Ocean Discovery Program (IODP) Expedition 354 Site U1450 was drilled at the center of a transect of 7 sites across the Bengal Fan at 8°N where long-term accumulation rates are highest. Site U1450 primarily consists of sandy and silty-sandy turbidites deposited at a rate higher than 20 cm/ky. During periods when the depocenter shifted...
Conference Paper
Patterns of variability in Pleistocene magnetic susceptibility (k) from deep-sea sediment cores from the Scotia Sea show a striking similarity to patterns of dust flux recorded in the EPICA Dronning Maud Land (EDML) ice core. Antarctic marine k records broadly reflect the interplay of lithogenic sediment provenance, biological productivity, sedimen...