A5002799264- Geomagnetism and Paleomagnetism Studies
- Geology and Paleoclimatology Research
- Geophysical and Geoelectrical Methods
- Archaeology and ancient environmental studies
- Geological and Geochemical Analysis
- Pleistocene-Era Hominins and Archaeology
- Maritime and Coastal Archaeology
- Marine and environmental studies
- Geological formations and processes
- earthquake and tectonic studies
- Earthquake Detection and Analysis
- Archaeology and Historical Studies
- Methane Hydrates and Related Phenomena
- Magnetic and Electromagnetic Effects
- Ancient Mediterranean Archaeology and History
- Ancient Near East History
- Geological and Geophysical Studies
- High-pressure geophysics and materials
- Marine animal studies overview
- Geochemistry and Geologic Mapping
- Metallurgy and Cultural Artifacts
- Forensic Anthropology and Bioarchaeology Studies
- Building materials and conservation
- Cultural Heritage Materials Analysis
- Planetary Science and Exploration
Hebrew University of Jerusalem
2015-2024
Ben-Gurion University of the Negev
2024
Hebrew College
2023
Tel Aviv University
2022
University of California, San Diego
2013-2021
Scripps Institution of Oceanography
2013-2016
Abstract The Magnetics Information Consortium (MagIC) database provides an archive with a flexible data model for paleomagnetic and rock magnetic data. PmagPy software package is cross‐platform open‐source set of tools written in Python the analysis that serves as one interface to MagIC, accommodating various levels user expertise. facilitates thorough documentation sampling, measurements, sets, visualization, interpretation experimental Although not only route into MagIC database, makes...
The selection of paleointensity data is a challenging, but essential step for establishing reliability. There is, however, no consensus as to how best quantify and which processes are most effective. To address these issues, we begin lay the foundations more unified theoretically justified approach data. We present new compilation standard definitions statistics help remove ambiguities in their calculation. also compile largest-to-date set raw from historical locations laboratory control...
This paper presents the results of 2009 excavations at Site 30 in Timna Valley, Israel. The results, coupled with a suite 11 new radiocarbon dates, fix chronology site between 11th and 9th centuries B.C.E. challenge previous chronological framework copper production activities southern Arabah Valley. also striking correlation recently reported archaeological record Iron Age Faynan, indicating technological social unity two regions. In light reexamination previously published materials, we...
Thellier‐type experiments are a method used to estimate the intensity of ancient geomagnetic field from samples carrying thermoremanent magnetization. The analysis experimental data is conventionally done by manually interpreting each specimen individually. main limitations this approach are: (1) manual interpretation highly subjective and can be biased misleading concepts, (2) procedure time consuming, (3) unless measurement published, final results cannot reproduced readers. These issues...
Earth’s magnetic field, one of the most enigmatic physical phenomena planet, is constantly changing on various time scales, from decades to millennia and longer. The reconstruction geomagnetic field behavior in periods predating direct observations with modern instrumentation based geological archaeological materials has twin challenges ( i ) accuracy ancient paleomagnetic estimates ii dating material. Here we address latter by using a set storage jar handles (fired clay) stamped royal seals...
The Hebrew Bible and other ancient Near Eastern texts describe Egyptian, Aramean, Assyrian, Babylonian military campaigns to the Southern Levant during 10th sixth centuries BCE. Indeed, many destruction layers dated this period have been unearthed in archaeological excavations. Several of these are securely linked specific widely accepted as chronological anchors. However, dating is often debated, challenging ability accurately reconstruct different raising questions regarding historicity...
Abstract Geomagnetic models based on direct observations since the 1830s show that averaged relative change in field intensity Earth's surface over past 170 years is less than 4.8% per decade. It unknown if these rates represent typical behavior of secular variations due to insufficient temporal resolution archaeomagnetic records from earlier periods. To address this question, we investigate two ancient slag mounds Cyprus—Skouriotissa Vouppes (SU1, fourth fifth centuries CE, 21 m height),...
Our understanding of geomagnetic field intensity prior to the era direct instrumental measurements relies on paleointensity analysis rocks and archaeological materials that serve as magnetic recorders. Only in rare cases are absolute data sets continuous over millennial timescales, sub-centennial resolution, directly dated using radiocarbon. As a result, fundamental properties field, such its maximum rate change have remained subject lively discussion. Here, we place firm constraints these...
In this presentation, we review the methodological, geomagnetic, and chronological insights gained from a newly developed high-resolution archaeomagnetic intensity curve for Levant spanning over past 9 millennia. The new compilation includes variety of archaeological materials collected Israel, Syria, Iraq, Jordan, primarily dated using radiocarbon and/or historical constraints. Paleointensity data were obtained two different methods: Triaxe, Thellier-IZZI-MagIC incorporating anisotropy...
Magnetite (Fe3O4), a ubiquitous sedimentary iron mineral, is crucial for paleomagnetic records preservation. However, reactive ferric minerals, including magnetite, can undergo reduction in aquatic sediments above and within the sulfidic zone at Sulfate-Methane Transition Zone (SMTZ), resulting production of dissolved ferrous iron. Partial reoxidation reduced oxic-anoxic interface lead to authigenic magnetite precipitation. Yet, persistence behavior deeper methanic have remained poorly...
Abstract Recent archaeomagnetic data from ancient Israel revealed the existence of a so‐called “Levantine Iron Age geomagnetic anomaly” (LIAA) which spanned first 350 years millennium before Common Era (B.C.E.) and was characterized by high averaged field (virtual axial dipole moments, VADM > 140 Z Am 2 , nearly twice today's field), short decadal‐scale spikes (VADM 160–185 ), fast variations, substantial deviation direction. The geographic constraints LIAA have remained elusive due to...
Abstract Statistical analysis of geomagnetic paleosecular variation (PSV) and time‐averaged field has been largely based on global compilations paleomagnetic data from lava flows. These show different trends in the averaged inclination anomaly (Δ I ) between two hemispheres, with small positive (<2°) anomalies midsouthern latitudes large negative (> −5°) midnorthern latitudes. To inspect ΔI 20°N 40°N we augment a new set Golan‐Heights (GH), Plio‐Pleistocene volcanic plateau northeast...
Paleomagnetic analysis of archaeological materials is crucial for understanding the behavior geomagnetic field in past. As it often difficult to accurately date acquisition magnetic information recorded materials, large age uncertainties and discrepancies are common archaeomagnetic datasets, limiting ability use these data modeling dating. Here we present an dated reconstruction intensity direction Jerusalem August, 586 BCE, city's destruction by fire Babylonian army, which marks end Iron...
The Lower Paleolithic Late Acheulian in the Levant marks a fascinating chapter human cultural and biological evolution. Nevertheless, many aspects of are still undeciphered, hindered by complex nature each site on one hand, scarcity wide, multidisciplinary studies other, difficulties obtaining absolute chronology for this timeframe. Therefore, subjects such as subsistence strategies modes adaptation, regional diversity, possible existence interactions between hominin groups largely...
The large and well-studied archaeological record of Israel offers a unique opportunity for collecting high resolution archaeomagnetic data from the past several millennia. Here, we initiate first catalog directions Israel, with covering four consists 76 directions, which 47 fulfill quality selection criteria Fisher precision parameter (k) ≥ 60, 95% cone confidence (α95) < 6° number specimens per site (n) 8. new complements our published paleointensity Levant enables testing hypothesis...
Abstract Archeomagnetic records are an important source of information on the past behavior geomagnetic field. Frequently, however, coeval archeomagnetic intensity (archeointensity) datasets from nearby locations display significant discrepancies, hampering precise reconstruction high‐resolution secular variation curve. This is case for time interval between later phase Early Bronze and early Late Ages (23rd–15th centuries BCE) in Levant Mesopotamia. We address problem by cross‐correlating...
Dendrites are crystals that grow in branches diverge along crystallographically defined directions. Despite the importance of dendrites paleomagnetic research, little is known about how act as magnetic recorders, because they exhibit complicated domain structures. In this study, we experimentally examine textures and sizes affect their structure properties. We study two basaltic glass samples three synthetic slag samples, which collectively define a wide range dendritic morphologies. use...