Some chemical features of two Papuan fresh waters (Papua New Guinea)

1976 ◽  
Vol 27 (3) ◽  
pp. 467 ◽  
Author(s):  
T Petr

The Purari River in Papua (Papua New Guinea) is a tropical river with ionic dominance similar to that of the world average river water, i.e. Ca > Mg > Na > K, and HCO3 > (SO4?) > Cl. As the sulphate concentration was not determined, the anionic trend still needs to be further investigated. The Na:Ca as well as the Ca + Mg:Na + K ionic ratios suggest that chemical weathering in the highlands is the dominant source of dissolved solids, and that it determines the chemistry of the lower course of the Purari River. Among the waters investigated, the Purari River, in its lower course, has a total salinity higher than that of the Sirinumu impoundment, and lower than that of the Sepik River. The low concentration of solutes in the Sirinumu impoundment near Port Moresby indicates that oligotrophication can be expected in reservoirs built on Papuan rivers.








2014 ◽  
Vol 53 (5) ◽  
pp. 471-483 ◽  
Author(s):  
Gwendalyn Vengiau ◽  
Masahiro Umezaki ◽  
Suparat Phuanukoonnon ◽  
Peter Siba ◽  
Chiho Watanabe


2000 ◽  
Vol 20 (16) ◽  
pp. 2239-2266 ◽  
Author(s):  
G.C Kineke ◽  
K.J Woolfe ◽  
S.A Kuehl ◽  
J.D Milliman ◽  
T.M Dellapenna ◽  
...  


PLoS ONE ◽  
2015 ◽  
Vol 10 (4) ◽  
pp. e0125178 ◽  
Author(s):  
Alvin Kuowei Tay ◽  
Susan Rees ◽  
Jack Chen ◽  
Moses Kareth ◽  
Sylvester Lahe ◽  
...  


Antiquity ◽  
1994 ◽  
Vol 68 (260) ◽  
pp. 604-610 ◽  
Author(s):  
Christina Pavlides ◽  
Chris Gosden

The growing story of early settlement in the northwest Pacific islands is moving from coastal sites into the rainforest. Evidence of Pleistocene cultural layers have been discovered in open-site excavations at Yombon, an area containing shifting hamlets, in West New Britain's interior tropical rainforest. These sites, the oldest in New Britain, may presently stand as the oldest open sites discovered in rainforest anywhere in the world.



Tsunami ◽  
2021 ◽  
pp. 37-48
Author(s):  
James Goff ◽  
Walter Dudley

The 1998 Papua New Guinea tsunami was a significant puzzle for scientists who finally cracked the cause, but it also marks the most recent event of many that can be dated back to at least 6,000 years ago where the skull of the oldest tsunami victim in the world was found. Papua New Guinea was also the starting point for the most remarkable navigational feat in the world, with Polynesians moving rapidly east into the Pacific Ocean, their settlement of the region being punctuated by hiatuses caused by catastrophic tsunamis approximately 3,000, 2,000, and 600 years ago. It was on isolated Pacific islands that humans first came into contact with the deadly Pacific Ring of Fire. Settlement abandonment, mass graves, and cultural collapse mark their progress.



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