Results 71 to 80 of about 78,364 (165)

Marine Sediment Record of Eruption‐Fed Vertical Density Currents, Kermadec Arc (Rangitāhua)

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Products of explosive volcanism can be transported into the oceans, where they form marine tephra layers. The processes responsible for their deposition are often complex, involving multiple transport mechanisms. During the RV Investigator voyage IN2022‐V02 (2022), a 35‐cm‐thick marine tephra unit was piston‐cored at 2,460 m water depth in the
Janne M. Scheffler   +7 more
wiley   +1 more source

Hydroacoustic Monitoring of Mayotte Submarine Volcano during Its Eruptive Phase

open access: yesGeosciences
Submarine volcanoes are more challenging to monitor than subaerial volcanoes. Yet, the large eruption of the Hunga Tonga-Hunga Ha’apai volcano in the Tonga archipelago in 2022 was a reminder of their hazardous nature and hence demonstrated the need to ...
Aude Lavayssière   +2 more
doaj   +1 more source

PLANETARY-SCALE RESPONSE OF AEROSOLS TO THE TONGA VOLCANO ERUPTION [PDF]

open access: yesRadio Physics and Radio Astronomy
Subject and Purpose. The work is aimed at analyzing changes in the concentration of atmospheric aerosols that were observed not only in the regions within a close vicinity of the eruption (particularly, in Australia), but in polar regions of the Earth as
A. V. Soina, Yu. M. Yampolsky
doaj   +1 more source

Emplacement of Hybrid Continental‐Oceanic Arc Terranes Without Collision: The Devonian Calliope Arc (New England Orogen, Australia)

open access: yesTectonics, Volume 45, Issue 7, July 2026.
Abstract The accretion of allochthonous provinces, derived from oceanic plates, has traditionally been considered an important contributor to continental growth. However, increasing evidence shows that some oceanic terranes (e.g., island arcs) are not “exotic,” as suggested by the presence of continental‐derived sedimentary provenance.
Igor V. Gomes   +4 more
wiley   +1 more source

Contribution to the Odonata of the Kingdom of Tonga [PDF]

open access: yes, 2013
New data on the Odonata fauna of the Kingdom of Tonga is provided following re-search carried out on Tongatapu and 'Eua islands in July 2012. New localities for Tongatapu Island are put on record and previous studies are compared with new pheno-logical ...
Marinov, Milen
core  

Profundum solomoni (Amphipoda: Uristidae) Exhibits a Disjunct Geographic Distribution at Hadal Depths Across the San Cristobal Trench, Santa Cruz Trench and Nova Canton Trough

open access: yesZoologica Scripta, Volume 55, Issue 4, Page 639-651, July 2026.
ABSTRACT Hadal environments (> 6000 m ocean depths) are often viewed as isolated locations with high species endemism due to limited dispersal. However, molecular studies continue to reveal greater complexity that questions historical perceptions. Recent population genetic studies focused on scavenging amphipods have identified broadly distributed ...
Brett C. Gonzalez   +2 more
wiley   +1 more source

Export Performance in South Pacific Countries Marginally Endowed with Natural Resources: Samoa and Tonga, 1960 to 1999 [PDF]

open access: yes
Stochastic dominance analysis was used to assess export performance in two Polynesian countries of similar size and structure that are both marginally endowed with natural resources: Samoa and Tonga.
Blowes, Anita, Fleming, Euan M.
core  

Tonga 1975

open access: yes, 1975
Edition 1-D.O.S.Standard map series designation: Series X872. "Projection:--transverse Mercator." "Grid:--U.T.M. zone 1; Tonga cadastral grid." Relief shown by contours, spot heights, and land form drawings on some sheets.
Great Britain. Directorate of Overseas Surveys;
core  

Pronounced Suppression and X-Pattern Merging of Equatorial Ionization Anomalies After the 2022 Tonga Volcano Eruption. [PDF]

open access: yesJ Geophys Res Space Phys, 2022
Aa E   +14 more
europepmc   +1 more source

1:25,000 Kingdom of Tonga [cartographic material] /

open access: yes, 1975
Ed. 1-D.O.S. Standard map series designation: Series X872.; "Grid:--U.T.M. zone 1; Tonga cadastral grid."; Relief shown by contours, spot heights, and land form drawings on some sheets.; Includes location map and conversion table.
Great Britain. Directorate of Overseas Surveys.
core  

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