Results 41 to 50 of about 19,945 (300)

Redescription of the Triassic cynodont Cistecynodon parvus and reassessment of its phylogeny

The Anatomical Record, EarlyView.
Abstract Cynodontia is an important subclade of Therapsida that first occurred in the late Permian. It includes extinct subclades which are the non‐mammaliaform cynodonts and Mammaliaformes, with the latter ultimately giving rise to crown mammals. The systematics of non‐mammaliaform cynodonts has been extensively studied and is relatively well‐resolved,
Erin S. Lund, Frederik P. Wolvaardt, Roger M. H. Smith, Jaganmoy Jodder, Julien Benoit   +4 more
wiley   +1 more source

Prediction of coal mine roof water damage based on micro-seismic monitoring technology

Meikuang Anquan, 2023
Taking 307 working face of Tingnan Coal Mine as the engineering background, in order to verify the reliability of real-time monitoring of water flowing fractured zone height by micro-seismic monitoring data, the mechanical numerical simulation software ...
LIAN Huiqing, YANG Yi, YANG Songlin, TANG Zhongyi, XU Bin, PEI Wenxian, WANG Rui, LI Qixing
doaj   +1 more source

Challenges and Opportunities in Multi‐Method Integrated Geophysical Prospection of Buried Building Remains at the Sanctuary of Olympia

Archaeological Prospection, EarlyView.
ABSTRACT Ancient Olympia was one of the most important sanctuaries and the venue for the Olympic Games in Greek and Roman times. Its remains are located in the Olympia Terrace (Peloponnese, Greece) at the present‐day confluence of the rivers Alpheios and Kladeos at the base of Mount Kronos.
Sarah Bäumler, Dennis Wilken, Peter Fischer, Lena Slabon, Timo Willershäuser, Birgitta Eder, Hans‐Joachim Gehrke, Erofili‐Iris Kolia, Franziska Lang, Oliver Pilz, Andreas Vött   +10 more
wiley   +1 more source

Three-dimensional numerical simulation and wave field analysis of seismic-while-digging model with faults

Meikuang Anquan
Seismic-while-digging exploration technology is one of the important exploration means in the intelligent development of coal roadway. Compared with the traditional exploration technology, it has the advantages of safety, high efficiency and synchronous ...
Shuai XU, Guangzhong JI, Yakuan GAO, Wenjie JIAO, Dixiu HE   +4 more
doaj   +1 more source

Emission of Rn and CO2 From Soil at Fault Zones Caused by Seismic Waves

Earth and Space Science, 2023
In the search for precursors to earthquakes, correlation has been found between geochemical characteristics of soil gases and seismic activity. In this paper we present evidence that seismic waves can trigger emission of soil radon (Rn) and carbon ...
Lei Liu, Zhi Chen, Ying Li, Zhaofei Liu, Le Hu, Xiang Wang, Longxing Yang, Jianguo Du, Xiaocheng Zhou   +8 more
doaj   +1 more source

Features of the analysis of technological pipelines for the development of an offshore field using the correlation of seismic impact data

Архитектура, строительство, транспорт, 2021
Seismic sensors are installed on offshore platforms for recording earthquakes. Technological pipelines are being built, to service the operation of the field. This article is devoted to ensuring the safety of technological pipelines.
L. V. Muravieva, I. G. Ovchinnikov
doaj   +1 more source

Optimizing Strategies for Non‐Invasive Prospection of Settlements in the Intertidal Zone: A Case Study From the Centre of the Drowned Medieval Village of Tolsende (Scheldt Estuary, the Netherlands)

Archaeological Prospection, EarlyView.
ABSTRACT Medieval and early modern drowned villages in the intertidal zone of the Scheldt estuary (the Netherlands) constitute intriguing yet largely understudied components of north‐western Europe's underwater cultural heritage. Despite their high archaeological potential as time capsules of past settlement landscapes, research has remained limited ...
Jan Trachet, Sarah Bäumler, Stefan Krojer, Jeroen Verhegge, Wim De Clercq, Philippe De Smedt, Wouter H. Maes, Bente S. Majchczack, Immo Trinks, Dennis Wilken   +9 more
wiley   +1 more source

Joint seismic/electrical effective medium modelling of hydrate-bearing marine sediments and an application to the Vancouver Island margin [PDF]

, 2008
Remote determination of the hydrate content of marine sediments remains a challenging problem.In the absence of boreholes, the most commonly used approach involves the measurement of Pwavevelocities from seismic experiments.
Best, A.I., Ellis, M.H., Best, Angus I., Minshull, T.A., Sinha, M.C.   +4 more
core  

Scanning Parametric Sediment Echosounder as Tool for Underwater Archaeological Prospection

Archaeological Prospection, EarlyView.
ABSTRACT Underwater cultural heritage 3D prospection techniques, especially for remains that are partly buried in the ground, are only very rarely available and often can only be applied with considerable technical effort. To overcome this limitation, we evaluate a methodological adaption of widely used and available single channel parametric sediment ...
Dennis Wilken, Philipp Held, Jacob Geersen, Marcel Bradtmöller, Peter Feldens, Jens Schneider v. Deimling   +5 more
wiley   +1 more source

Anomalous stress diffusion in earthquake triggering: Correlation length, time dependence, and directionality [PDF]

, 2003
It has been recently suggested that moderate and large earthquakes can be triggered by similarly sized events at very long range. Here we study the main characteristics of earthquake triggering by determining its correlation length, time dependence, and ...
Ian G. Main, Huc, Mireilli, Main, Ian G.; id_orcid, Mireille Huc   +3 more
core   +1 more source