Ellen Platzman
Biographic Data
| ID | 6379661 |
|---|---|
| NAME | Ellen Platzman |
| GIVEN NAMES | Ellen |
| FAMILY NAME | Platzman |
| SIGNATURE | PLATZMAN E |
| AFFILIATIONS | Department of Earth Sciences, University of Southern California, USA |
| VERIFIED | No |
| TOTAL WORKS | 6 |
| TOTAL CITATIONS | 8 |
| WORKS AS AUTHOR | 6 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2005 |
| LATEST PUBLICATION YEAR | 2022 |
| H-INDEX | 2 |
A comparison of late-Holocene hydrologic variability in California
This study compares the paleohydrologic variability in two California regions over the last 2000 years – Sierra Nevada region and southern California region. Both regions show significant and reproducible proxy evidence for multi-decadal wet/dry intervals that are synchronous between the two regions. The overall durations of individual cycles (wet-wet or dry-dry) average ~130 years, but the cycles are closer to 90–100 year duration for the last 5…
Late-Holocene paleomagnetic secular variation records from Lake Turkana, East Equatorial Africa
We have carried out a paleomagnetic study of three piston cores collected from Lake Turkana. The goal is to recover a Holocene paleomagnetic secular variation (PSV) record for this lake and to correlate it with other Holocene PSV records from the East Africa Rift Valley (EARV). All three cores were sampled with u-channels and magnetic measurements of magnetic susceptibility, the natural remanence (NRM), and two artificial remanences, anhysteretic…
Paleomagnetic secular variation records from Holocene sediments of Lake Victoria (0.5°S, 33.3°E)
We have conducted a paleomagnetic study of Holocene sediments from Lake Victoria in order to develop a high-resolution record of paleomagnetic secular variation (PSV). This study has recovered PSV records from two cores (V95-1P and V95-7P) in northern Lake Victoria (0.5°S). The PSV is recorded in fine-grained detrital magnetite/titanomagnetite grains, but the rock magnetic data suggest that significant magnetic mineral dissolution has occurred, w…
Lake sediment records of multidecadal/centennial-scale hydrologic variability in California for the last 2000 years
Paleomagnetic chronostratigraphy of late Holocene Zaca Lake, California
We have developed a paleomagnetic secular variation (PSV) record from Zaca Lake, California, that spans the last ~3200 years. The record is derived from detailed (2 cm) sampling of core 09-1C, which is 873 cm in length. The paleomagnetic remanence is carried jointly by magnetite and greigite. The greigite appears to form in the anoxic bottom water of the lake and/or at the sediment/water interface. The paleomagnetic remanence has a very simple ch…
Dating environmental change using magnetic bacteria in archaeological soils from the upper Thames Valley, UK
Dating environmental change using magnetic bacteria in archaeological soils from the upper Thames Valley, UK
Paleomagnetic chronostratigraphy of late Holocene Zaca Lake, California
We have developed a paleomagnetic secular variation (PSV) record from Zaca Lake, California, that spans the last ~3200 years. The record is derived from detailed (2 cm) sampling of core 09-1C, which is 873 cm in length. The paleomagnetic remanence is carried jointly by magnetite and greigite. The greigite appears to form in the anoxic bottom water of the lake and/or at the sediment/water interface. The paleomagnetic remanence has a very simple ch…
Dating environmental change using magnetic bacteria in archaeological soils from the upper Thames Valley, UK
Lake sediment records of multidecadal/centennial-scale hydrologic variability in California for the last 2000 years
Paleomagnetic chronostratigraphy of late Holocene Zaca Lake, California
We have developed a paleomagnetic secular variation (PSV) record from Zaca Lake, California, that spans the last ~3200 years. The record is derived from detailed (2 cm) sampling of core 09-1C, which is 873 cm in length. The paleomagnetic remanence is carried jointly by magnetite and greigite. The greigite appears to form in the anoxic bottom water of the lake and/or at the sediment/water interface. The paleomagnetic remanence has a very simple ch…
Paleomagnetic secular variation records from Holocene sediments of Lake Victoria (0.5°S, 33.3°E)
We have conducted a paleomagnetic study of Holocene sediments from Lake Victoria in order to develop a high-resolution record of paleomagnetic secular variation (PSV). This study has recovered PSV records from two cores (V95-1P and V95-7P) in northern Lake Victoria (0.5°S). The PSV is recorded in fine-grained detrital magnetite/titanomagnetite grains, but the rock magnetic data suggest that significant magnetic mineral dissolution has occurred, w…
A comparison of late-Holocene hydrologic variability in California
This study compares the paleohydrologic variability in two California regions over the last 2000 years – Sierra Nevada region and southern California region. Both regions show significant and reproducible proxy evidence for multi-decadal wet/dry intervals that are synchronous between the two regions. The overall durations of individual cycles (wet-wet or dry-dry) average ~130 years, but the cycles are closer to 90–100 year duration for the last 5…
Late-Holocene paleomagnetic secular variation records from Lake Turkana, East Equatorial Africa
We have carried out a paleomagnetic study of three piston cores collected from Lake Turkana. The goal is to recover a Holocene paleomagnetic secular variation (PSV) record for this lake and to correlate it with other Holocene PSV records from the East Africa Rift Valley (EARV). All three cores were sampled with u-channels and magnetic measurements of magnetic susceptibility, the natural remanence (NRM), and two artificial remanences, anhysteretic…
Geography (6 works) · Geology (6 works) · Geology and Paleoclimatology Research (5 works) · Physical geography (5 works) · Geomagnetism and Paleomagnetism Studies (4 works) · Holocene (4 works) · Paleontology (4 works) · Archaeology (3 works) · Paleomagnetism (3 works) · Radiocarbon dating (3 works)