Results 61 to 70 of about 2,662 (199)

Contributions of Multi‐Method Geophysical Survey to Archaeological Research at the Battlefield of Waterloo

Archaeological Prospection, Volume 31, Issue 3, Page 267-287, July/September 2024.
ABSTRACT Archaeological prospection is continually expanding into new frontiers, examining increasingly large areas, diverse environmental contexts and varying site types. One area that has received only limited focus is historic battlefields. This paper presents results from large‐scale geophysical surveys (> 100 ha) at the Napoleonic battlefield of ...
Duncan Williams, Dominique Bosquet, Tony Pollard, Kate Welham, Stuart Eve, Philippe De Smedt   +5 more
wiley   +1 more source

Pioneer Venus Orbiter Observations of Solar Wind Driven Magnetosonic Waves Interacting With the Dayside Venusian Ionosphere

Geophysical Research Letters, Volume 51, Issue 12, 28 June 2024.
Abstract We use in situ plasma observations made by the Pioneer Venus Orbiter spacecraft to show for the first time that magnetosonic waves can couple the solar wind to the upper ionosphere and deposit energy there. The waves are generated upstream of Venus, are advected into the shock and propagate across the draped magnetic field, through the ...
C. M. Fowler, S. Ledvina, C. C. Chaston, M. Persson, R. Ramstad, J. Luhmann   +5 more
wiley   +1 more source

Study to develop gradiometer techniques [PDF]

The primary goal of the current gravity gradiometer research at Stanford has been to establish the feasibility of using a gravity gradiometer with 1 E accuracy, as the primary sensor in various applications. The two applications considered here in detail
Debra, D. B., Kurosaki, M., Schaechter, D.   +2 more
core   +1 more source

MAGPRIME: An Open‐Source Library for Benchmarking and Developing Interference Removal Algorithms for Spaceborne Magnetometers

Earth and Space Science, Volume 11, Issue 6, June 2024.
Abstract Magnetometers are essential instruments in space physics, but their measurements are often contaminated by various external interference sources. In this work, we present a comprehensive review of existing magnetometer interference removal methods and introduce MAGPRIME (MAGnetic signal PRocessing, Interference Mitigation, and Enhancement), an
Alex Paul Hoffmann, Mark B. Moldwin, Shun Imajo, Matthew G. Finley, Arie Sheinker   +4 more
wiley   +1 more source

Feasibility Analysis of Underwater Vehicle Detection Based on Homogeneous Ellipsoidal Hull Model Using Gravity Gradient

Journal of Marine Science and Engineering
In recent years, as underwater vehicles continue to improve their noise reduction capabilities, sonar-based detection has faced significant challenges, and non-acoustic detection has become a research focus.
Hexing Zheng, Jinguo Liu, Haitao Gu
doaj   +1 more source

Geoarchaeological investigations in Artanish Peninsula, Armenia: Testing a new geochemical prospecting method for archaeology

Archaeological Prospection, Volume 31, Issue 1, Page 3-22, January/March 2024.
Abstract Within the framework of an Armenian–German research project, taking place between 2019 and 2021 on the Artanish Peninsula at Lake Sevan (Armenia), in addition to numerous (geo‐) archaeological investigations, methods of geochemical prospection have been carried out. The ancient burial grounds of Artanish 23 and Artanish 29 have served as model
Arshavir Hovhannisyan, Arsen Bobokhyan, René Kunze, Jörg W. E. Fassbinder, Sandra E. Hahn, Dmitri Arakelyan, Avetis Grigoryan, Marianna Harutyunyan, Varduhi Siradeghyan   +8 more
wiley   +1 more source

Development of a sensitive superconducting gravity gradiometer for geological and navigational applications [PDF]

A sensitive and stable gravity gradiometer would provide high resolution gravity measurements from space. The instrument could also provide precision tests of fundamental laws of physics and be applied to inertial guidance systems of the future.
Paik, H. J., Richard, J. P.
core   +1 more source

Effective inertial frame in an atom interferometric test of the equivalence principle

, 2017
In an ideal test of the equivalence principle, the test masses fall in a common inertial frame. A real experiment is affected by gravity gradients, which introduce systematic errors by coupling to initial kinematic differences between the test masses. We
Asenbaum, Peter, Hogan, Jason M., Kasevich, Mark A., Kovachy, Tim, Notermans, Remy, Overstreet, Chris   +5 more
core   +1 more source

Quiet Time Thermospheric Gravity Waves Observed by GOCE and CHAMP

Journal of Geophysical Research: Space Physics, Volume 129, Issue 1, January 2024.
Abstract The Gravity Field and Steady‐State Ocean Circulation Explorer (GOCE) and CHAllenging Minisatellite Payload (CHAMP) satellites measure in‐situ thermospheric density and cross‐track wind. When propagating obliquely to the satellite track in a horizontal plane (i.e., not purely along‐track or cross‐track), gravity waves (GWs) can be observed both
Shuang Xu, Sharon L. Vadas, Jia Yue
wiley   +1 more source

Research relative to the development of a cryogenic microwave cavity gradiometer for orbital use [PDF]

The noncryogenic, single axis, gravity gradiometer which is characterized by a sensitivity of the order of 10 to the minus 2 power Eovos Units in a few sec integration time was investigated.
Grossi, M. D.
core   +1 more source