Sharen Lee
Datos Biográficos
| ID | 4131979 |
|---|---|
| NOMBRE | Sharen Lee |
| NOMBRES | Sharen |
| APELLIDO | Lee |
| FIRMA | LEE S |
| AFILIACIONES | University of Oxford |
| ORCID | 0000-0002-2401-2837 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 7 |
| TOTAL DE CITAS | 310 |
| TOTAL COMO AUTOR | 7 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 2010 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2013 |
| ÍNDICE H | 4 |
Recent and Planned Developments of the Program OxCal
OxCal is a widely used software package for the calibration of radiocarbon dates and the statistical analysis of 14 C and other chronological information. The program aims to make statistical methods easily available to researchers and students working in a range of different disciplines. This paper will look at the recent and planned developments of the package. The recent additions to the statistical methods are primarily aimed at providing mor…
Modeling the Age of the Cape Riva (Y-2) Tephra
Tephra from the Cape Riva (Y-2) eruption of Santorini has been found across the eastern Mediterranean. It presents an important link between marine and terrestrial records. A Poisson process (P Sequence) age-depth prior, with model averaging, is used to model individual previously published radiocarbon sequences, cross-linked with an exponential phase model parameter to obtain a robust age. Multiple sequences and 14 C determinations from 3 easter…
Iron Age Chronology in Israel
Bayesian methods have been widely used to address the Iron Age chronological debate in Israel, which has implications for the entire eastern Mediterranean Iron Age chronology. However, a consensus has not been reached. This is largely because radiocarbon dates of materials in this period lie on an oscillation in the calibration curve. This study focuses on the modeling of 14 C dates from the Iron I and Iron II periods, discusses the underlying as…
Volcanic ash layers illuminate the resilience of Neanderthals and early modern humans to natural hazards
Marked changes in human dispersal and development during the Middle to Upper Paleolithic transition have been attributed to massive volcanic eruption and/or severe climatic deterioration. We test this concept using records of volcanic ash layers of the Campanian Ignimbrite eruption dated to ca. 40,000 y ago (40 ka B.P.). The distribution of the Campanian Ignimbrite has been enhanced by the discovery of cryptotephra deposits (volcanic ash layers t…
Building and testing age models for the construction of robust Quaternary chronologies
Development and Application of the Trapezoidal Model for Archaeological Chronologies
Single- and multiphase models have been used extensively in construction of chronologies. We model more gradual transition between phases with a trapezoid model since it better reflects the nature of the information that goes into the model prior. We find that a simple trapezoid model has a bias that docs not reflect prior knowledge, and thus propose an addition of a noninformative clement to the prior. We also present an alternative parameteriza…
Developments in the Calibration and Modeling of Radiocarbon Dates
Calibration is a core element of radiocarbon dating and is undergoing rapid development on a number of different fronts. This is most obvious in the area of 14 C archives suitable for calibration purposes, which are now demonstrating much greater coherence over the earlier age range of the technique. Of particular significance to this end is the development of purely terrestrial archives such as those from the Lake Suigetsu sedimentary profile an…
Recent and Planned Developments of the Program OxCal
OxCal is a widely used software package for the calibration of radiocarbon dates and the statistical analysis of 14 C and other chronological information. The program aims to make statistical methods easily available to researchers and students working in a range of different disciplines. This paper will look at the recent and planned developments of the package. The recent additions to the statistical methods are primarily aimed at providing mor…
Development and Application of the Trapezoidal Model for Archaeological Chronologies
Single- and multiphase models have been used extensively in construction of chronologies. We model more gradual transition between phases with a trapezoid model since it better reflects the nature of the information that goes into the model prior. We find that a simple trapezoid model has a bias that docs not reflect prior knowledge, and thus propose an addition of a noninformative clement to the prior. We also present an alternative parameteriza…
Developments in the Calibration and Modeling of Radiocarbon Dates
Calibration is a core element of radiocarbon dating and is undergoing rapid development on a number of different fronts. This is most obvious in the area of 14 C archives suitable for calibration purposes, which are now demonstrating much greater coherence over the earlier age range of the technique. Of particular significance to this end is the development of purely terrestrial archives such as those from the Lake Suigetsu sedimentary profile an…
Iron Age Chronology in Israel
Bayesian methods have been widely used to address the Iron Age chronological debate in Israel, which has implications for the entire eastern Mediterranean Iron Age chronology. However, a consensus has not been reached. This is largely because radiocarbon dates of materials in this period lie on an oscillation in the calibration curve. This study focuses on the modeling of 14 C dates from the Iron I and Iron II periods, discusses the underlying as…
Modeling the Age of the Cape Riva (Y-2) Tephra
Tephra from the Cape Riva (Y-2) eruption of Santorini has been found across the eastern Mediterranean. It presents an important link between marine and terrestrial records. A Poisson process (P Sequence) age-depth prior, with model averaging, is used to model individual previously published radiocarbon sequences, cross-linked with an exponential phase model parameter to obtain a robust age. Multiple sequences and 14 C determinations from 3 easter…
Developments in the Calibration and Modeling of Radiocarbon Dates
Calibration is a core element of radiocarbon dating and is undergoing rapid development on a number of different fronts. This is most obvious in the area of 14 C archives suitable for calibration purposes, which are now demonstrating much greater coherence over the earlier age range of the technique. Of particular significance to this end is the development of purely terrestrial archives such as those from the Lake Suigetsu sedimentary profile an…
Volcanic ash layers illuminate the resilience of Neanderthals and early modern humans to natural hazards
Marked changes in human dispersal and development during the Middle to Upper Paleolithic transition have been attributed to massive volcanic eruption and/or severe climatic deterioration. We test this concept using records of volcanic ash layers of the Campanian Ignimbrite eruption dated to ca. 40,000 y ago (40 ka B.P.). The distribution of the Campanian Ignimbrite has been enhanced by the discovery of cryptotephra deposits (volcanic ash layers t…
Building and testing age models for the construction of robust Quaternary chronologies
Development and Application of the Trapezoidal Model for Archaeological Chronologies
Single- and multiphase models have been used extensively in construction of chronologies. We model more gradual transition between phases with a trapezoid model since it better reflects the nature of the information that goes into the model prior. We find that a simple trapezoid model has a bias that docs not reflect prior knowledge, and thus propose an addition of a noninformative clement to the prior. We also present an alternative parameteriza…
Recent and Planned Developments of the Program OxCal
OxCal is a widely used software package for the calibration of radiocarbon dates and the statistical analysis of 14 C and other chronological information. The program aims to make statistical methods easily available to researchers and students working in a range of different disciplines. This paper will look at the recent and planned developments of the package. The recent additions to the statistical methods are primarily aimed at providing mor…
Modeling the Age of the Cape Riva (Y-2) Tephra
Tephra from the Cape Riva (Y-2) eruption of Santorini has been found across the eastern Mediterranean. It presents an important link between marine and terrestrial records. A Poisson process (P Sequence) age-depth prior, with model averaging, is used to model individual previously published radiocarbon sequences, cross-linked with an exponential phase model parameter to obtain a robust age. Multiple sequences and 14 C determinations from 3 easter…
Iron Age Chronology in Israel
Bayesian methods have been widely used to address the Iron Age chronological debate in Israel, which has implications for the entire eastern Mediterranean Iron Age chronology. However, a consensus has not been reached. This is largely because radiocarbon dates of materials in this period lie on an oscillation in the calibration curve. This study focuses on the modeling of 14 C dates from the Iron I and Iron II periods, discusses the underlying as…
Archaeology and ancient environmental studies (6 obras) · Archaeology (5 obras) · Geography (5 obras) · Geology (5 obras) · Geology and Paleoclimatology Research (5 obras) · Paleontology (5 obras) · Radiocarbon dating (4 obras) · Statistics (4 obras) · Calibration (3 obras) · Computer Science (3 obras)