Potencial de las imágenes satelitales corona para la reconstrucción 3D de paisajes arqueológicos

[EN] This paper presents a preliminary use of satellite imagery from the CORONA program in the reconstruction of the archaeological landscape of two different sites: Ancient Termez (southern border of Uzbekistan) and Khatm Al Melaha (eastern coast of United Arab Emirates in Kalba area). This analysis constitutes the first step of the work carried out in the field since 2018 at both sites for an analysis of the syntactic interoperability of multi-scale geospatial data for archaeological heritage. The aim of this work was to establish an approach for the use of CORONA satellite imagery for archaeological DEM reconstruction. The objectives of the reconstruction were conditioned for different reasons: in the case of Termez prior to the anthropic transformation of the site in the Soviet - Afghan War and in the case of Khatm Al Melaha prior to the urban, coastal and road transformation. The results have provided uneven data due to the characteristics of the existing imagery: mission, resolution, overlap, orography and different ground control point distribution. This methodology opens a door to the reconstruction of archaeological landscapes that have suffered evident deterioration for different reasons by means of historical aerial imagery in the last 60 years, practically, in some cases, as a primary and unique source for analysing this type of change from the past.[ES] Este artículo presenta un uso preliminar de imágenes satelitales del programa CORONA en la reconstrucción del paisaje arqueológico de dos yacimientos diferentes: la Antigua Termez (frontera Sur de Uzbekistán) y Khatm Al Melaha (costa Este de los Emiratos Árabes Unidos en la zona de Kalba). Este análisis constituye el primer paso del trabajo realizado en campo desde 2018 en ambos yacimientos para un análisis de la interoperatividad sintáctica de datos geoespaciales multiescala para el patrimonio arqueológico. El objetivo de este trabajo ha sido establecer una aproximación sobre el uso de imágenes de satélite CORONA para la reconstrucción arqueológica del MDE. Los objetivos de la reconstrucción estuvieron condicionados por diferentes motivos, en el caso de Termez, previo a la transformación antrópica del yacimiento, por la guerra soviético-afgana y, en el caso de Khatm Al Melaha, previo a la transformación urbana, costera y red de carreteras. Los resultados han proporcionado datos desiguales debido a las características de las imágenes existentes: misión, resolución, solape, orografía y diferente distribución de puntos de control terrestres. Esta metodología abre la puerta a la reconstrucción de paisajes arqueológicos que han sufrido un deterioro evidente por diferentes motivos mediante imágenes aéreas históricas en los últimos 60 años, donde prácticamente en algunos casos, constituye una fuente primaria y única para analizar este tipo de cambios del pasado.The Termez project was supported by two R&D&I projects, CERAC (HAR2016-75133-C3-1-P) led by V. Martínez and J.M. Gurt, and CONCERAC (HAR2016-75133-C3-3-P) led by E. Ariño, all funded by the Spanish Ministry of Science, Innovation and Universities. The Palarq Foundation supported the archaeological campaign in Termez in the year 2018. V. Martínez worked on this paper through the post-doctoral research contract Ramón y Cajal (RYC-2014-15789). Research campaigns in Kalba area have been carried out thanks to the collaboration of SHARJAH ARCHAEOLOGY AUTHORITY (Emirate of Sharjah, United Arab Emirates). This work was developed within the project H2019/HUM-5742 AVIPES-CM (CAMComunidad de Madrid, Spain/ ESF- Fondo Social Europeo).Angás, J.; Uribe, P.; Bea, M.; Farjas, M.; Ariño, E.; Martinez-Ferreras, V.; Gurt, J. (2021). Potential of corona satellite imagery for 3D reconstruction of archaeological landscapes. En Proceedings 3rd Congress in Geomatics Engineering. Editorial Universitat Politècnica de València. 35-41. https://doi.org/10.4995/CiGeo2021.2021.12703OCS354

Rapid Intensity Decrease During the Second Half of the First Millennium BCE in Central Asia and Global Implications

Recent paleomagnetic studies have shown that important short-lived intensity fluctuations occurred during the first millennium BCE. However, the knowledge of the spatial and temporal extension of these features is still limited by the scarce availability of robust data. In this study we focus on the study of the intensity decrease that took place in Central Asia during the second half of the 1st millennium BCE after the high intensities that characterized the Levantine Iron Age Anomaly. Since previous archeointensities available for this period and region were obtained without accomplishing modern standards of quality, we present here new archeointensities that are derived from classical Thellier and Thellier experiments, including partial thermoremanent magnetization (pTRM) checks, thermoremanent magnetization (TRM) anisotropy and cooling rate corrections at the specimen level. The new 51 archeointensities, together with previous archeointensities, have been used to present a new local paleosecular variation curve for Central Asia. The results confirm the existence of an important geomagnetic field intensity decrease in South Uzbekistan from the 4th century BCE to the end of the 1st century BCE associated with rates of changes up to −15 μT/century. A critical analysis of the archeointensity global database indicates that this feature was present at continental scale, from Western Europe to Central Asia. However, this trend is not identified in other regions such as Japan or Mexico. Finally, the comparison with the dipole moment derived from recent global geomagnetic field reconstructions suggests a strong influence of non-dipolar sources upon this continental intensity feature

Le transport maritime du vin léétanien au haut Empire. L’apport du gisement d’amphores du cap Gros (Port-Vendres)

The underwater deposit of cape Gros has been the subject of surveys in recent years. It has not yielded any significant remains of a ship, but corresponds to a shipwreck site, as shown by several tenuous elements. On the other hand, it has yielded the remains of a cargo of Pascual 1 amphorae. Archaeometric analyses have shown that this very homogeneous cargo comes from the same area, and probably from the same workshop located in the vicinity of Badalona. It illustrates the flow of Leetanian wines transported from the ports of the central area of the Catalan coast to Narbonne, in order to supply western Gaul in particular, as well as the northern confines of the Empire. More specifically, it is comparable to that of the wrecks at Els Ullastres and Cap del Vol, and must be placed at the peak of Leetanian wine production between 40 BC and the Augustan periodKeywords