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Journal articles on the topic 'Astrid Ridge'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Siddiquie, H. N., D. Gopala Rao, and M. V. Ramana. "Geology and structure of the Astrid Ridge, Dronning Maud Land, Antarctica." Paleoceanography 3, no. 5 (1988): 583–99. http://dx.doi.org/10.1029/pa003i005p00583.

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2

Bergh, Hugh W. "Underlying fracture zone nature of Astrid Ridge off Antarctica's Queen Maud Land." Journal of Geophysical Research 92, B1 (1987): 475. http://dx.doi.org/10.1029/jb092ib01p00475.

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3

Jónasson, Pétur M., and Petur M. Jonasson. "Iceland: An Island Astride the Mid-Atlantic Ridge." Oikos 64, no. 1/2 (1992): 8. http://dx.doi.org/10.2307/3545039.

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4

GARDNER, THOMAS W., DAVID VERDONCK, NICHOLAS M. PINTER, et al. "Quaternary uplift astride the aseismic Cocos Ridge, Pacific coast, Costa Rica." Geological Society of America Bulletin 104, no. 2 (1992): 219–32. http://dx.doi.org/10.1130/0016-7606(1992)104<0219:quatac>2.3.co;2.

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5

Dilman, Anna B. "Asteroid fauna of the northern Mid-Atlantic Ridge: additional records." Marine Biology Research 9, no. 5-6 (2013): 563–86. http://dx.doi.org/10.1080/17451000.2012.749993.

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6

Dilman, Anna B. "Asteroid fauna of the northern Mid-Atlantic Ridge with description of a new speciesHymenasterides mironovisp. nov." Marine Biology Research 4, no. 1-2 (2008): 131–51. http://dx.doi.org/10.1080/17451000701821736.

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7

Barucci, M. A., P. H. Hasselmann, A. Praet, et al. "OSIRIS-REx spectral analysis of (101955) Bennu by multivariate statistics." Astronomy & Astrophysics 637 (May 2020): L4. http://dx.doi.org/10.1051/0004-6361/202038144.

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Contact. The NASA New Frontiers asteroid sample return mission Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) has provided a large amount of data on the asteroid (101955) Bennu, including high-quality spectra obtained by the OSIRIS-REx Visible and InfraRed Spectrometer (OVIRS). Aims. To better constrain the surface properties and compositional variations of Bennu, we studied the visible and near-infrared spectral behavior across the asteroid surface by means of a statistical analysis aiming to distinguish spectrally distinct groups, if pr

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8

Daly, M. G., O. S. Barnouin, J. A. Seabrook, et al. "Hemispherical differences in the shape and topography of asteroid (101955) Bennu." Science Advances 6, no. 41 (2020): eabd3649. http://dx.doi.org/10.1126/sciadv.abd3649.

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We investigate the shape of near-Earth asteroid (101955) Bennu by constructing a high-resolution (20 cm) global digital terrain model from laser altimeter data. By modeling the northern and southern hemispheres separately, we find that longitudinal ridges previously identified in the north extend into the south but are obscured there by surface material. In the south, more numerous large boulders effectively retain surface materials and imply a higher average strength at depth to support them. The north has fewer large boulders and more evidence of boulder dynamics (toppling and downslope move

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9

Hawksett, D. "Broad horizons Encyclopaedia of the Solar System, by Paul Weissman, Lucy-Ann McFadden, Sally Ride and Torrance Johnson. Academic Press, 90, 794 pages hbk, ISBN: 0122268059." Astronomy & Geophysics 40, no. 1 (1999): 1.32. http://dx.doi.org/10.1093/astrog/40.1.1.32.

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10

Binzel, Richard P., Francesca E. DeMeo, Brian J. Burt, et al. "Spectral slope variations for OSIRIS-REx target Asteroid (101955) Bennu: Possible evidence for a fine-grained regolith equatorial ridge." Icarus 256 (August 2015): 22–29. http://dx.doi.org/10.1016/j.icarus.2015.04.011.

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11

Rożek, A., S. C. Lowry, B. Rozitis, et al. "Physical model of near-Earth asteroid (1917) Cuyo from ground-based optical and thermal-IR observations." Astronomy & Astrophysics 627 (July 2019): A172. http://dx.doi.org/10.1051/0004-6361/201834162.

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Context. The near-Earth asteroid (1917) Cuyo was subject to radar and light curve observations during a close approach in 1989, and observed up until 2008. It was selected as one of our ESO Large Programme targets, aimed at observational detections of the Yarkovsky-O’Keefe-Radzievskii-Paddack (YORP) effect through long-term light curve monitoring and physical modelling of near-Earth asteroids. Aims. We aim to constrain the physical properties of Cuyo: shape, spin-state, and spectroscopic and thermo-physical properties of the surface. Methods. We acquired photometric light curves of Cuyo spanni

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12

Papakonstantinou, Maria-Foteini, Arto Penttinen, Gregory N. Tsokas, et al. "The Makrakomi Archaeological Landscapes Project. A preliminary report on investigations carried out in 2010–2012." Opuscula. Annual of the Swedish Institutes at Athens and Rome 6 (November 2013): 211–60. http://dx.doi.org/10.30549/opathrom-06-08.

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In this article we provide a preliminary report of the work carried out between 2010 and 2012 as part of the Makrakomi Archaeological Landscapes Project (MALP). The programme of research is carried out in co-operation between the Swedish Institute at Athens and the 14th Ephorate of Prehistoric and Classical Antiquities at Lamia. The interdisciplinary project started in the summer of 2010, when a pilot survey was conducted in and around the hill of Profitis Elias, in the modern municipality of Makrakomi, where extensive traces of ancient fortifications are still visible. Systematic investigatio

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13

Ogundare, Margaret Ojone, Agneta Fransson, Melissa Chierici, Warren R. Joubert, and Alakendra N. Roychoudhury. "Variability of Sea-Air Carbon Dioxide Flux in Autumn Across the Weddell Gyre and Offshore Dronning Maud Land in the Southern Ocean." Frontiers in Marine Science 7 (January 15, 2021). http://dx.doi.org/10.3389/fmars.2020.614263.

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Sea surface fugacity of carbon dioxide (fCO2ssw) was measured across the Weddell gyre and the eastern sector in the Atlantic Southern Ocean in autumn. During the occupation between February and April 2019, the region of the study transect was a potential ocean CO2 sink. A net CO2 flux (FCO2) of −6.2 (± 8; sink) mmol m–2 d–1 was estimated for the entire study region, with the largest average CO2 sink of −10.0 (± 8) mmol m–2 d–1 in the partly ice-covered Astrid Ridge (AR) region near the coast at 68°S and −6.1 (± 8) mmol m–2d–1 was observed in the Maud Rise (MR) region. A CO2 sink was also obser

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14

Watanabe, S., M. Hirabayashi, N. Hirata, et al. "Hayabusa2 arrives at the carbonaceous asteroid 162173 Ryugu—A spinning top–shaped rubble pile." Science, March 19, 2019, eaav8032. http://dx.doi.org/10.1126/science.aav8032.

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The Hayabusa2 spacecraft arrived at the near-Earth carbonaceous asteroid 162173 Ryugu in 2018. We present Hayabusa2 observations of Ryugu’s shape, mass, and geomorphology. Ryugu has an oblate ‘spinning top’ shape with a prominent circular equatorial ridge. Its bulk density, 1.19 ± 0.02 g cm–3, indicates a high porosity (>50%) interior. Large surface boulders suggest a rubble-pile structure. Surface slope analysis shows Ryugu’s shape may have been produced if it once spun at twice the current rate. Coupled with the observed global material homogeneity, this suggests that Ryugu was reshaped b

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15

Lauridsen, Palle Schantz. "BØRNENES BYER." Tidsskriftet Antropologi, no. 47 (June 1, 2003). http://dx.doi.org/10.7146/ta.v0i47.107123.

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Inden for de seneste år er der skrevet ganske meget om byer og film (jf. litteraturlisten). Byfilmens kanon er ved at være på plads, og det ville være nemt at finde yndlingsfilm blandt disse kanoniske film. For ikke at fortsætte ad et spor, der allerede er lagt, skal jeg dog i denne lille opsats behandle to byfilm, som jeg aldrig selv har set omtalt i diskussioner af filmens byer. Det drejer sig om to efterhånden alderstegne film, Astrid Henning-Jensens Palle alene i verden (1949) og Albert Lamorisses Le ballon rouge (1956). Altså om to børnefilm, hvor

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16

"Asteroid miners to hitch a ride with Virgin Galactic." New Scientist 215, no. 2874 (2012): 6. http://dx.doi.org/10.1016/s0262-4079(12)61840-5.

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17

Sugita, S., R. Honda, T. Morota, et al. "The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes." Science, March 19, 2019, eaaw0422. http://dx.doi.org/10.1126/science.aaw0422.

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The near-Earth carbonaceous asteroid 162173 Ryugu is thought to have been produced from a parent body that contained water ice and organic molecules. The Hayabusa2 spacecraft has obtained global multi-color images of Ryugu. Geomorphological features present include a circum-equatorial ridge, east/west dichotomy, high boulder abundances across the entire surface, and impact craters. Age estimates from the craters indicate a resurfacing age of ≲106 years for the top 1-meter layer. Ryugu is among the darkest known bodies in the Solar System. The high abundance and spectral properties of boulders

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18

Delamoir, Jeannette, and Patrick West. "Editorial." M/C Journal 10, no. 2 (2007). http://dx.doi.org/10.5204/mcj.2618.

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   As Earth heats up and water vapourises, “Adapt” is a word that is frequently invoked right now, in a world seething with change and challenge. Its Oxford English Dictionary definitions—“to fit, to make suitable; to alter so as to fit for a new use”—give little hint of the strangely divergent moral values associated with its use. There is, of course, the word’s unavoidable Darwinian connotations which, in spite of creationist controversy, communicate a cluster of positive values linked with progress. By contrast, the literary use of adapt is frequently linked with negative

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