Galia González-Hernández
Biographic Data
| ID | 4130103 |
|---|---|
| NAME | Galia González-Hernández |
| GIVEN NAMES | Galia |
| FAMILY NAME | González-Hernández |
| SIGNATURE | GONZÁLEZ-HERNÁNDEZ G |
| VERIFIED | No |
| TOTAL WORKS | 8 |
| TOTAL CITATIONS | 18 |
| AUTHOR COUNT | 8 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2006 |
| LATEST PUBLICATION YEAR | 2024 |
| H-INDEX | 3 |
Changes in Fossil Co 2 Emissions in Mexico City During the Covid-19 Lockdown Deduced From Atmospheric Radiocarbon Concentrations
We present atmospheric radiocarbon concentrations in CO 2 integrated samples taken between January 2019 and December 2021 in the Mexico City Metropolitan Area (MCMA) and explain the variations in terms of changes in emission sources associated with the COVID-19 lockdown restrictions imposed from March 2020. Δ 14 C values for samples collected during 2019 range between –44.15‰ and –13.17‰, with lower values during months with higher fossil fuels c…
A High-Resolution Chronology for the Palatial Complex of Xalla in Teotihuacan, Mexico, Combining Radiocarbon Ages and Archaeomagnetic Dates in a Bayesian Model
Teotihuacan is one of the most studied archaeological sites in Mesoamerica because of its exceptional size and urban planning; however, its last years of occupation and abandonment are still under debate. We report a high-resolution chronology for the Xalla complex integrating archaeomagnetic dates, radiocarbon ( 14 C) ages, and detailed archaeological information about sample type and context in a Bayesian model. The model includes 42 14 C ages …
Changes in CO 2 Emission Sources in Mexico City Metropolitan Area Deduced from Radiocarbon Concentrations in Tree Rings
We present radiocarbon ( 14 C) in tree rings from Mexico City and a reconstruction of fossil CO 2 concentrations for the last five decades, as part of a research program to understand the 14 C dynamics in this complex urban area. Background values were established by 14 C concentrations in tree rings from a nearby clean area. Agreement between background and NH-zone 2 values indicate Taxodium mucronatum is a good biomonitor for annual atmospheric…
Temporal and Spatial Variations of Atmospheric Radiocarbon in the Mexico City Metropolitan Area
The Mexico City Metropolitan Area (MCMA) produces a complex mixture of gases and aerosols from diverse sources, including burning of fossil fuels, biomass, and wastes, with a significant biogenic contribution. We present the first results of ongoing projects to study temporal and spatial variations of 14 CO 2 in the area. Temporal variations reconstructed from tree rings of Taxodium mucronatum indicate a considerable radiocarbon depletion, in acc…
Dendrochronological Potential of Fraxinus Uhdei and Its Use as Bioindicator of Fossil CO 2 Emissions Deduced from Radiocarbon Concentrations in Tree Rings
Dendrochronological studies are limited in tropical regions because not many tree species form annual growth rings. This work reports an evaluation of the dendrochronological potential of tropical ash ( Fraxinus uhdei ) and its use as a bioindicator of fossil CO 2 concentration in urban areas by means of radiocarbon analysis on growth rings. We analyzed a cross-section of a tree that grew during the period 1932–2007 in San Luis Potosí, one of the…
Modern Radiocarbon Levels for Northwestern Mexico Derived from Tree Rings: A Comparison with Northern Hemisphere Zones 2 and 3 Curves
The radiocarbon variation for northwestern Mexico during the period 1950–2004 was studied by accelerator mass spectrometry (AMS) and liquid scintillation counting (LSC) analyses of tree rings. Two tree-ring sequences of Pseudotsuga menziesii, sampled in a site isolated from urban centers and active volcanoes (26.18°N, 106.3°W, 3000 m asl), were dendrochronologically dated and separated in annual rings prior to 14 C analysis. Results obtained show…
High-resolution chronology for the Mesoamerican urban center of Teotihuacan derived from Bayesian statistics of radiocarbon and archaeological data
A high-resolution 14 C chronology for the Teopancazco archaeological site in the Teotihuacan urban center of Mesoamerica was generated by Bayesian analysis of 33 radiocarbon dates and detailed archaeological information related to occupation stratigraphy, pottery and archaeomagnetic dates. The calibrated intervals obtained using the Bayesian model are up to ca. 70% shorter than those obtained with individual calibrations. For some samples, this i…
Radiocarbon Laboratory at the National Autonomous University of Mexico: First Set of Samples and New 14 C Internal Reference Material
This contribution reports the first set of samples and the creation of an internal reference material at the recently opened Radiocarbon Laboratory at the National Autonomous University of Mexico (UNAM). Samples for the initial measurements were selected from archaeological and dating projects on Teotihuacán, one of the largest and best-studied Mesoamerican urban and ceremonial centers. The 14 C dates were compared to results obtained by 2 other …
Radiocarbon Laboratory at the National Autonomous University of Mexico: First Set of Samples and New 14 C Internal Reference Material
This contribution reports the first set of samples and the creation of an internal reference material at the recently opened Radiocarbon Laboratory at the National Autonomous University of Mexico (UNAM). Samples for the initial measurements were selected from archaeological and dating projects on Teotihuacán, one of the largest and best-studied Mesoamerican urban and ceremonial centers. The 14 C dates were compared to results obtained by 2 other …
Modern Radiocarbon Levels for Northwestern Mexico Derived from Tree Rings: A Comparison with Northern Hemisphere Zones 2 and 3 Curves
The radiocarbon variation for northwestern Mexico during the period 1950–2004 was studied by accelerator mass spectrometry (AMS) and liquid scintillation counting (LSC) analyses of tree rings. Two tree-ring sequences of Pseudotsuga menziesii, sampled in a site isolated from urban centers and active volcanoes (26.18°N, 106.3°W, 3000 m asl), were dendrochronologically dated and separated in annual rings prior to 14 C analysis. Results obtained show…
Temporal and Spatial Variations of Atmospheric Radiocarbon in the Mexico City Metropolitan Area
The Mexico City Metropolitan Area (MCMA) produces a complex mixture of gases and aerosols from diverse sources, including burning of fossil fuels, biomass, and wastes, with a significant biogenic contribution. We present the first results of ongoing projects to study temporal and spatial variations of 14 CO 2 in the area. Temporal variations reconstructed from tree rings of Taxodium mucronatum indicate a considerable radiocarbon depletion, in acc…
A High-Resolution Chronology for the Palatial Complex of Xalla in Teotihuacan, Mexico, Combining Radiocarbon Ages and Archaeomagnetic Dates in a Bayesian Model
Teotihuacan is one of the most studied archaeological sites in Mesoamerica because of its exceptional size and urban planning; however, its last years of occupation and abandonment are still under debate. We report a high-resolution chronology for the Xalla complex integrating archaeomagnetic dates, radiocarbon ( 14 C) ages, and detailed archaeological information about sample type and context in a Bayesian model. The model includes 42 14 C ages …
Changes in CO 2 Emission Sources in Mexico City Metropolitan Area Deduced from Radiocarbon Concentrations in Tree Rings
We present radiocarbon ( 14 C) in tree rings from Mexico City and a reconstruction of fossil CO 2 concentrations for the last five decades, as part of a research program to understand the 14 C dynamics in this complex urban area. Background values were established by 14 C concentrations in tree rings from a nearby clean area. Agreement between background and NH-zone 2 values indicate Taxodium mucronatum is a good biomonitor for annual atmospheric…
Dendrochronological Potential of Fraxinus Uhdei and Its Use as Bioindicator of Fossil CO 2 Emissions Deduced from Radiocarbon Concentrations in Tree Rings
Dendrochronological studies are limited in tropical regions because not many tree species form annual growth rings. This work reports an evaluation of the dendrochronological potential of tropical ash ( Fraxinus uhdei ) and its use as a bioindicator of fossil CO 2 concentration in urban areas by means of radiocarbon analysis on growth rings. We analyzed a cross-section of a tree that grew during the period 1932–2007 in San Luis Potosí, one of the…
Radiocarbon Laboratory at the National Autonomous University of Mexico: First Set of Samples and New 14 C Internal Reference Material
This contribution reports the first set of samples and the creation of an internal reference material at the recently opened Radiocarbon Laboratory at the National Autonomous University of Mexico (UNAM). Samples for the initial measurements were selected from archaeological and dating projects on Teotihuacán, one of the largest and best-studied Mesoamerican urban and ceremonial centers. The 14 C dates were compared to results obtained by 2 other …
High-resolution chronology for the Mesoamerican urban center of Teotihuacan derived from Bayesian statistics of radiocarbon and archaeological data
A high-resolution 14 C chronology for the Teopancazco archaeological site in the Teotihuacan urban center of Mesoamerica was generated by Bayesian analysis of 33 radiocarbon dates and detailed archaeological information related to occupation stratigraphy, pottery and archaeomagnetic dates. The calibrated intervals obtained using the Bayesian model are up to ca. 70% shorter than those obtained with individual calibrations. For some samples, this i…
Modern Radiocarbon Levels for Northwestern Mexico Derived from Tree Rings: A Comparison with Northern Hemisphere Zones 2 and 3 Curves
The radiocarbon variation for northwestern Mexico during the period 1950–2004 was studied by accelerator mass spectrometry (AMS) and liquid scintillation counting (LSC) analyses of tree rings. Two tree-ring sequences of Pseudotsuga menziesii, sampled in a site isolated from urban centers and active volcanoes (26.18°N, 106.3°W, 3000 m asl), were dendrochronologically dated and separated in annual rings prior to 14 C analysis. Results obtained show…
Dendrochronological Potential of Fraxinus Uhdei and Its Use as Bioindicator of Fossil CO 2 Emissions Deduced from Radiocarbon Concentrations in Tree Rings
Dendrochronological studies are limited in tropical regions because not many tree species form annual growth rings. This work reports an evaluation of the dendrochronological potential of tropical ash ( Fraxinus uhdei ) and its use as a bioindicator of fossil CO 2 concentration in urban areas by means of radiocarbon analysis on growth rings. We analyzed a cross-section of a tree that grew during the period 1932–2007 in San Luis Potosí, one of the…
Temporal and Spatial Variations of Atmospheric Radiocarbon in the Mexico City Metropolitan Area
The Mexico City Metropolitan Area (MCMA) produces a complex mixture of gases and aerosols from diverse sources, including burning of fossil fuels, biomass, and wastes, with a significant biogenic contribution. We present the first results of ongoing projects to study temporal and spatial variations of 14 CO 2 in the area. Temporal variations reconstructed from tree rings of Taxodium mucronatum indicate a considerable radiocarbon depletion, in acc…
Changes in CO 2 Emission Sources in Mexico City Metropolitan Area Deduced from Radiocarbon Concentrations in Tree Rings
We present radiocarbon ( 14 C) in tree rings from Mexico City and a reconstruction of fossil CO 2 concentrations for the last five decades, as part of a research program to understand the 14 C dynamics in this complex urban area. Background values were established by 14 C concentrations in tree rings from a nearby clean area. Agreement between background and NH-zone 2 values indicate Taxodium mucronatum is a good biomonitor for annual atmospheric…
A High-Resolution Chronology for the Palatial Complex of Xalla in Teotihuacan, Mexico, Combining Radiocarbon Ages and Archaeomagnetic Dates in a Bayesian Model
Teotihuacan is one of the most studied archaeological sites in Mesoamerica because of its exceptional size and urban planning; however, its last years of occupation and abandonment are still under debate. We report a high-resolution chronology for the Xalla complex integrating archaeomagnetic dates, radiocarbon ( 14 C) ages, and detailed archaeological information about sample type and context in a Bayesian model. The model includes 42 14 C ages …
Changes in Fossil Co 2 Emissions in Mexico City During the Covid-19 Lockdown Deduced From Atmospheric Radiocarbon Concentrations
We present atmospheric radiocarbon concentrations in CO 2 integrated samples taken between January 2019 and December 2021 in the Mexico City Metropolitan Area (MCMA) and explain the variations in terms of changes in emission sources associated with the COVID-19 lockdown restrictions imposed from March 2020. Δ 14 C values for samples collected during 2019 range between –44.15‰ and –13.17‰, with lower values during months with higher fossil fuels c…
Geography (8 works) · Radiocarbon dating (8 works) · Geology (7 works) · Archaeology (6 works) · Physical geography (6 works) · Atmospheric sciences (5 works) · Environmental Science (4 works) · Geology and Paleoclimatology Research (4 works) · Archaeology and ancient environmental studies (3 works) · Atmospheric and Environmental Gas Dynamics (3 works)