Expendable Doppler Penetrometer for Deep Ocean Sediment Strength Measurements

1984 ◽  
Author(s):  
R. M. Beard
Keyword(s):  
Deep Ocean ◽  
Ocean Sediment ◽  
Sediment Strength

scholarly journals Temperature effects on carbon-specific respiration rate and sinking velocity of diatom aggregates – potential implications for deep ocean export processes

2013 ◽  
Vol 10 (6) ◽  
pp. 4073-4085 ◽  
Author(s):  
M. H. Iversen ◽  
H. Ploug
Keyword(s):  
Respiration Rate ◽  
Deep Ocean ◽  
Sediment Traps ◽  
Average Particle ◽  
Data Set ◽  
Direct Measurements ◽  
Ocean Sediment ◽  
Influence Of Temperature On ◽  
Ocean Carbon ◽  
Sinking Velocity

Abstract. Most deep ocean carbon flux profiles show low and almost constant fluxes of particulate organic carbon (POC) in the deep ocean. However, the reason for the non-changing POC fluxes at depths is unknown. This study presents direct measurements of formation, degradation, and sinking velocity of diatom aggregates from laboratory studies performed at 15 °C and 4 °C during a three-week experiment. The average carbon-specific respiration rate during the experiment was 0.12 ± 0.03 at 15 °C, and decreased 3.5-fold when the temperature was lowered to 4 °C. No direct influence of temperature on aggregate sinking speed was observed. Using the remineralisation rate measured at 4 °C and an average particle sinking speed of 150 m d−1, calculated carbon fluxes were similar to those collected in deep ocean sediment traps from a global data set, indicating that temperature plays a major role for deep ocean fluxes of POC.

scholarly journals Diketopiperazine Alkaloids from a Deep Ocean Sediment Derived Fungus Penicillium sp.

2009 ◽  
Vol 57 (8) ◽  
pp. 873-876 ◽  
Author(s):  
Lin Du ◽  
Xinying Yang ◽  
Tianjiao Zhu ◽  
Fengping Wang ◽  
Xiang Xiao ◽  
...  
Keyword(s):  
Deep Ocean ◽  
Penicillium Sp ◽  
Ocean Sediment

Corrigendum to “Trisorbicillinone A, a novel sorbicillin trimer, from a deep ocean sediment derived fungus, Phialocephala sp. FL30r”

2007 ◽  
Vol 48 (45) ◽  
pp. 8083 ◽  
Author(s):  
Dehai Li ◽  
Fengping Wang ◽  
Xiang Xiao ◽  
Yuchun Fang ◽  
Tianjiao Zhu ◽  
...  
Keyword(s):  
Deep Ocean ◽  
Ocean Sediment

scholarly journals Alkaloids from a deep ocean sediment-derived fungus Penicillium sp. and their antitumor activities

2010 ◽  
Vol 63 (4) ◽  
pp. 165-170 ◽  
Author(s):  
Lin Du ◽  
Teng Feng ◽  
Boyu Zhao ◽  
Dehai Li ◽  
Shengxin Cai ◽  
...  
Keyword(s):  
Deep Ocean ◽  
Antitumor Activities ◽  
Penicillium Sp ◽  
Ocean Sediment

Deep ocean sediment transport

1988 ◽  
Vol 12 (1) ◽  
pp. 105-106
Author(s):  
Herman H. Rieke
Keyword(s):  
Sediment Transport ◽  
Deep Ocean ◽  
Ocean Sediment
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