Abstract
The significance of analog studies using lava tubes on Earth to inform on the design of future lunar and Martian missions is aimed at exploring and utilising those structures as potential habitats on those planetary bodies. Lava tubes, natural subsurface cavities formed by volcanic activity, have several characteristics that make them appealing for human habitation on the Moon and Mars. Researchers conducting analog studies on Earth can gain valuable insights into the geological, environmental, engineering, crew and robotic challenges associated with lunar or Martian lava tube exploration and housing. This work reviews some scientific characteristics of an Azorean lava tube system that can contribute towards analog studies and their potential to help plan and design lunar and Martian missions. Human and robotic planetary exploration has garnered considerable attention recently, focusing on identifying potential habitats for future human missions. Lava tubes, formed by molten lava flowing beneath the solidified crust, offer natural subsurface shelters with numerous advantages for lunar or Martian habitation. This work provides insight into one of a lava tube structures, in Terceira island in the Azores archipelago. This structure would be adequate for analog studies that can contribute to the design of missions, providing valuable protocols for geological, geophysical and engineering tasks and potentially facilitating the development of sustainable lunar or Martian habitats. © 2023 International Multidisciplinary Scientific Geoconference. All rights reserved.

Abstract
Results of self-potential, seismic reflection and refraction, Infrared spectroscopy, ion chromatography and IR thermography survey performed over a Portuguese artistic tomb made of a porous limestone are presented. The tomb presents nowadays severe decay phenomena. The decay products associated to the decay patterns observed are mainly related with the presence of salts, namely nitrates and secondarily of chlorides. The self-potential and the thermography survey allowed verifying that moisture degrees change in different side walls of the tomb. The seismic methods showed there is no clear interface between undamaged and damaged stone material where the limestone is soft and the strength is slightly lower in the most humid zones. © 2013 Taylor & Francis Group, London.

Abstract
The region West of Estarreja is topographically flat and, from the geological point of view, characterized by Quaternary and Cretaceous formations that lie discordantly over Pre-Cambrian schists. The topography of this contact is poorly known and, therefore, is investigated here. Data from drilling, electrical resistivity profiles and gravity mapping, over a 30 km2 area bounded on the Eastern side by the “Norte” Railway line and on the Western by the Ria de Aveiro that separates Murtosa from Torreira, are jointly interpreted to produce a robust model for the topography of the bedrock. Hence, NW-SE alignments, inferred by previous works, are clearly identified. Bedrock depressions are also proposed and agree with previous geophysical models from areas to the South of the region herein investigated. © 2022 LNEG – Laboratório Nacional de Energia e Geologia IP.

Abstract
This paper focuses the evaluation of susceptibility to linear erosion in the RDD, presenting the results of SIMWE (Simulated Water Erosion) model application. Furthermore, we also proceed to the results analysis by comparing the hydrological characteristics (infiltration capacity, hydraulic conductivity), soil texture and structure (evaluated by the electrical resistivity) in the high erosion areas defined through SIMWE. The study shows an association between the spatial distribution of erosive features with high values of water depth and reduced water discharge values that are consistent with the reduced values of electrical resistivity sectors. The areas with the highest percentage of erosive features related to sediment flux, the transport capacity and the sediment concentration assume medium susceptibility values. These combined to a hydraulic conductivity and soil infiltration capacity at very low values is consistent with its fine texture, allowing increased runoff and the development of linear erosion.

Abstract
O Mosteiro da Batalha é uma relevante obra da arquitectura gótica, resultou do cumprimento da promessa feita por D. João I, após vitória na batalha de Aljubarrota. O mosteiro esteve na posse dos dominicanos até à extinção das ordens religiosas, sendo actualmente dependência da DGPC e Património da Humanidade pela UNESCO. Recentemente a Universidade Aveiro caracterizou estrutural do monumento. Entre as técnicas testadas considera-se aqui o potencial espontâneo, anteriormente aplicados na Igreja da Graça em Santarém (Martinho et. al, 2014). Seleccionou-se uma parede com eflorescências na qual se sobrepôs uma grelha de eléctrodos (12×5) espaçados de 0.5m. O mapeamento do potencial espontâneo foi realizado tendo como referência um eléctrodo sobre eflorescências. Concluiu-se que as zonas da parede com sais estão ao mesmo potencial, enquanto as zonas onde as eflorescências não ocorrem apresentam um potencial mais elevado. A composição mineralógica dos sais foi estudada por Difracção de Raios X.

Abstract
The construction of terraces, in the Douro Region, with earthen embankments rises aset of problems related to the hydrological processes. The main objective of this study is the evaluation of the electrical resistivity spatial variation in agriculture terraces atDouro valley (Portugal).To achieve this objective two variables are analysed, the soil electrical resistivity andthe flow direction algorithms. In field survey, 13 electrical resistivity profiles wererecorded. The contributing area calculated with the algorithms D (DeterminiscInfinity Flow) and MFD (Multiple Flow Direction), are the base of the internal runoffmodelling, both supported by the digital elevation model with a special resolution of1m2.Was stablished a correlation between the spatial variation of the soil electrical resistivityrepresented by standard deviation electrical resistivity of each profile and the averagevalue of contributing area coincident with each profile.The electrical resistivity standard deviation seems to be moderately good correlated forthe D algorithm at about 1m of depth and has a good correlaon at 1,5m to 2m ofdepth with the MFD algorithm. The results analysis shows a significant positivestatistical correlation between electrical resistivity standard deviation and thecontributing areas (MFD and D) depending on the soil depths.