Michael Sarnthein
Biographic Data
| ID | 5598403 |
|---|---|
| NAME | Michael Sarnthein |
| GIVEN NAMES | Michael |
| FAMILY NAME | Sarnthein |
| SIGNATURE | SARNTHEIN M |
| AFFILIATIONS | Christian-Albrechts-Universität zu Kiel |
| ORCID | 0000-0002-8106-000X |
| VERIFIED | Yes |
| TOTAL WORKS | 13 |
| TOTAL CITATIONS | 40 |
| AUTHOR COUNT | 13 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1986 |
| LATEST PUBLICATION YEAR | 2024 |
| H-INDEX | 2 |
Centennial to Millennial-Scale Fluctuations of the Lake Suigetsu Atmospheric 14 C Record Represent Authentic 14 C Features Over Last Glacial-to-Deglacial Times
Short-term fluctuations in atmospheric radiocarbon ( 14 C) concentration mark the tree-ring record for the last ∼15 kyr. Terrestrial macrofossils from sediment cores of Lake Suigetsu, Japan, extend this record of fluctuations back to >35 cal ka BP. Their significance, however, is under debate since the signal-to-noise ratio of the Suigetsu record is low and progressively decreases with increasing age. Coherent semi-millennial-scale structures of …
Planktic 14 C Plateaus: A Result of Short-Term Sedimentation Pulses
The tuning of plateaus in glacial and deglacial planktic radiocarbon records to pertinent structures in the atmospheric 14 C record of Lake Suigetsu results in both a record of surface water reservoir ages and a centennial-scale absolute age model. However, the atmospheric origin of planktic 14 C plateaus may be questioned. Alternatively, plateaus may result from short pulses of increased hemipelagic sediment deposition, which challenges the tech…
Planktic and Benthic 14 C Reservoir Ages for Three Ocean Basins, Calibrated by a Suite of 14 C Plateaus in the Glacial-to-Deglacial Suigetsu Atmospheric 14 C Record
This article presents a compilation of planktic and benthic 14 C reservoir ages for the Last Glacial Maximum (LGM) and early deglacial from 11 key sites of global ocean circulation in the Atlantic and Indo-Pacific Ocean. The ages were obtained by 14 C plateau tuning, a robust technique to derive both an absolute chronology for marine sediment records and a high-resolution record of changing reservoir/ventilation ages (Δ 14 C values) for surface a…
C records show overturning pulses in the Nordic Seas over LGM and Heinrich 1
C Ages of a Varved Last Glacial Maximum Section Off Pakistan
In a core off Pakistan, we obtained 38 14 C analyses by accelerator mass spectrometry (AMS) from a 4.4-m-thick, expanded, annually-laminated Last Glacial Maximum (LGM) section, bracketed by bioturbated intervals ascribed to the Heinrich-1 (H1) and Heinrich-2 (H2) equivalent events (52 14 C analyses between 24–15 kyr BP). A floating varve age scale, anchored to the oxygen isotope record of the layer-counted GISP2 ice core at the H2/LGM boundary, r…
Abrupt onset and termination of the African Humid Period
Coherent High- and Low-Latitude Climate Variability During the Holocene Warm Period
A faunal record of sea-surface temperature (SST) variations off West Africa documents a series of abrupt, millennial-scale cooling events, which punctuated the Holocene warm period. These events evidently resulted from increased southward advection of cooler temperate or subpolar waters to this subtropical location or from enhanced regional upwelling. The most recent of these events was the Little Ice Age, which occurred between 1300 to 1850 A.D.…
Radiocarbon Levels in the Iceland Sea from 25–53 kyr and their Link to the Earth's Magnetic Field Intensity
By correlating the climate records and radiocarbon ages of the planktonic foraminifera N. pachyderma (s) of deep-sea core PS2644 from the Iceland Sea with the annual-layer chronology of the GISP2 ice core, we obtained 80 marine 14 C calibration points for the interval 11.4-53.3 ka cal BP. Between 27 and 54 ka cal BP the continuous record of 14 C/cal age differences reveals three intervals of highly increased 14 C concentrations coincident with lo…
Correlation of Marine 14 C Ages from the Nordic Seas with the Gisp2 Isotope Record: Implications for 14 C Calibration Beyond 25 ka BP
We present two new high-resolution sediment records from the southwestern Iceland and Norwegian Seas that were dated by numerous 14 C ages up to 54 14 C ka bp. Based on various lines of evidence, the local 14 C reservoir effect was restricted to 400–1600 yr. The planktic stable isotope records reveal several meltwater spikes that were sampled with an average time resolution of 50 yr in PS2644 and 130 yr in core 23071 during isotope stage 3. Most …
Century-scale events in monsoonal climate over the past 24,000 years
Atmospheric summer circulation and coastal upwelling in the Arabian Sea during the Holocene and the last glaciation
Accumulation rates of biogenic and lithogenic components were studied in 39 turbidite-free, well-dated sediment cores from the northern Indian Ocean to define the proportions of fluvial and eolian input and to reconstruct Quaternary patterns of coastal upwelling. The majority of dust deposited in the western Arabian Sea during the Holocene (about 100 × 10 6 t yr −1 ) is advected from Arabia by northwesterly winds, which overlie the low-level sout…
The Age of the Holstein Interglaciation: A Reply
The Holstein Interglaciation: Time-Stratigraphic Position and Correlation to Stable-Isotope Stratigraphy of Deep-Sea Sediments
Marine molluscan shells from para-type and other localities of the Holsteinian interglaciation were dated by Th/U and the electron spin resonance (ESR) method to more than 350,000 and 370,000 yr B.P., beyond the limit of Th/U dating. The high age estimate is corroborated by a K/Ar age of 420,000 yr B.P. determined from volcanic ash near the base of the Ariendorf paleosol in the Middle Rhine valley believed to be a pedostratigraphic equivalent of …
Radiocarbon Levels in the Iceland Sea from 25–53 kyr and their Link to the Earth's Magnetic Field Intensity
By correlating the climate records and radiocarbon ages of the planktonic foraminifera N. pachyderma (s) of deep-sea core PS2644 from the Iceland Sea with the annual-layer chronology of the GISP2 ice core, we obtained 80 marine 14 C calibration points for the interval 11.4-53.3 ka cal BP. Between 27 and 54 ka cal BP the continuous record of 14 C/cal age differences reveals three intervals of highly increased 14 C concentrations coincident with lo…
Correlation of Marine 14 C Ages from the Nordic Seas with the Gisp2 Isotope Record: Implications for 14 C Calibration Beyond 25 ka BP
We present two new high-resolution sediment records from the southwestern Iceland and Norwegian Seas that were dated by numerous 14 C ages up to 54 14 C ka bp. Based on various lines of evidence, the local 14 C reservoir effect was restricted to 400–1600 yr. The planktic stable isotope records reveal several meltwater spikes that were sampled with an average time resolution of 50 yr in PS2644 and 130 yr in core 23071 during isotope stage 3. Most …
C Ages of a Varved Last Glacial Maximum Section Off Pakistan
In a core off Pakistan, we obtained 38 14 C analyses by accelerator mass spectrometry (AMS) from a 4.4-m-thick, expanded, annually-laminated Last Glacial Maximum (LGM) section, bracketed by bioturbated intervals ascribed to the Heinrich-1 (H1) and Heinrich-2 (H2) equivalent events (52 14 C analyses between 24–15 kyr BP). A floating varve age scale, anchored to the oxygen isotope record of the layer-counted GISP2 ice core at the H2/LGM boundary, r…
The Holstein Interglaciation: Time-Stratigraphic Position and Correlation to Stable-Isotope Stratigraphy of Deep-Sea Sediments
Marine molluscan shells from para-type and other localities of the Holsteinian interglaciation were dated by Th/U and the electron spin resonance (ESR) method to more than 350,000 and 370,000 yr B.P., beyond the limit of Th/U dating. The high age estimate is corroborated by a K/Ar age of 420,000 yr B.P. determined from volcanic ash near the base of the Ariendorf paleosol in the Middle Rhine valley believed to be a pedostratigraphic equivalent of …
The Age of the Holstein Interglaciation: A Reply
Atmospheric summer circulation and coastal upwelling in the Arabian Sea during the Holocene and the last glaciation
Accumulation rates of biogenic and lithogenic components were studied in 39 turbidite-free, well-dated sediment cores from the northern Indian Ocean to define the proportions of fluvial and eolian input and to reconstruct Quaternary patterns of coastal upwelling. The majority of dust deposited in the western Arabian Sea during the Holocene (about 100 × 10 6 t yr −1 ) is advected from Arabia by northwesterly winds, which overlie the low-level sout…
Century-scale events in monsoonal climate over the past 24,000 years
Correlation of Marine 14 C Ages from the Nordic Seas with the Gisp2 Isotope Record: Implications for 14 C Calibration Beyond 25 ka BP
We present two new high-resolution sediment records from the southwestern Iceland and Norwegian Seas that were dated by numerous 14 C ages up to 54 14 C ka bp. Based on various lines of evidence, the local 14 C reservoir effect was restricted to 400–1600 yr. The planktic stable isotope records reveal several meltwater spikes that were sampled with an average time resolution of 50 yr in PS2644 and 130 yr in core 23071 during isotope stage 3. Most …
Abrupt onset and termination of the African Humid Period
Coherent High- and Low-Latitude Climate Variability During the Holocene Warm Period
A faunal record of sea-surface temperature (SST) variations off West Africa documents a series of abrupt, millennial-scale cooling events, which punctuated the Holocene warm period. These events evidently resulted from increased southward advection of cooler temperate or subpolar waters to this subtropical location or from enhanced regional upwelling. The most recent of these events was the Little Ice Age, which occurred between 1300 to 1850 A.D.…
Radiocarbon Levels in the Iceland Sea from 25–53 kyr and their Link to the Earth's Magnetic Field Intensity
By correlating the climate records and radiocarbon ages of the planktonic foraminifera N. pachyderma (s) of deep-sea core PS2644 from the Iceland Sea with the annual-layer chronology of the GISP2 ice core, we obtained 80 marine 14 C calibration points for the interval 11.4-53.3 ka cal BP. Between 27 and 54 ka cal BP the continuous record of 14 C/cal age differences reveals three intervals of highly increased 14 C concentrations coincident with lo…
C Ages of a Varved Last Glacial Maximum Section Off Pakistan
In a core off Pakistan, we obtained 38 14 C analyses by accelerator mass spectrometry (AMS) from a 4.4-m-thick, expanded, annually-laminated Last Glacial Maximum (LGM) section, bracketed by bioturbated intervals ascribed to the Heinrich-1 (H1) and Heinrich-2 (H2) equivalent events (52 14 C analyses between 24–15 kyr BP). A floating varve age scale, anchored to the oxygen isotope record of the layer-counted GISP2 ice core at the H2/LGM boundary, r…
C records show overturning pulses in the Nordic Seas over LGM and Heinrich 1
Planktic and Benthic 14 C Reservoir Ages for Three Ocean Basins, Calibrated by a Suite of 14 C Plateaus in the Glacial-to-Deglacial Suigetsu Atmospheric 14 C Record
This article presents a compilation of planktic and benthic 14 C reservoir ages for the Last Glacial Maximum (LGM) and early deglacial from 11 key sites of global ocean circulation in the Atlantic and Indo-Pacific Ocean. The ages were obtained by 14 C plateau tuning, a robust technique to derive both an absolute chronology for marine sediment records and a high-resolution record of changing reservoir/ventilation ages (Δ 14 C values) for surface a…
Planktic 14 C Plateaus: A Result of Short-Term Sedimentation Pulses
The tuning of plateaus in glacial and deglacial planktic radiocarbon records to pertinent structures in the atmospheric 14 C record of Lake Suigetsu results in both a record of surface water reservoir ages and a centennial-scale absolute age model. However, the atmospheric origin of planktic 14 C plateaus may be questioned. Alternatively, plateaus may result from short pulses of increased hemipelagic sediment deposition, which challenges the tech…
Centennial to Millennial-Scale Fluctuations of the Lake Suigetsu Atmospheric 14 C Record Represent Authentic 14 C Features Over Last Glacial-to-Deglacial Times
Short-term fluctuations in atmospheric radiocarbon ( 14 C) concentration mark the tree-ring record for the last ∼15 kyr. Terrestrial macrofossils from sediment cores of Lake Suigetsu, Japan, extend this record of fluctuations back to >35 cal ka BP. Their significance, however, is under debate since the signal-to-noise ratio of the Suigetsu record is low and progressively decreases with increasing age. Coherent semi-millennial-scale structures of …
Geology and Paleoclimatology Research (12 works) · Glacial period (8 works) · Holocene (8 works) · Climatology (7 works) · Geology (7 works) · Geology (6 works) · Isotope Analysis in Ecology (6 works) · Paleontology (6 works) · Radiocarbon dating (6 works) · Oceanography (5 works)