Environmental interpretation using insoluble residues within reef coral skeletons: problems, pitfalls, and preliminary results

Coral Reefs ◽  
1993 ◽  
Vol 12 (1) ◽  
pp. 31-42 ◽  
Author(s):  
Ann F. Budd ◽  
Keith O. Mann ◽  
Hector M. Guzm�n
Keyword(s):  
Reef Coral ◽  
Environmental Interpretation ◽  
Preliminary Results ◽  
Coral Skeletons

Seasonal high and low density bands in reef coral skeletons

Nature ◽  
1975 ◽  
Vol 255 (5511) ◽  
pp. 697-698 ◽  
Author(s):  
JON N. WEBER ◽  
PETER DEINES ◽  
EUGENE W. WHITE ◽  
PATRICIA H. WEBER
Keyword(s):  
Reef Coral ◽  
Low Density ◽  
Coral Skeletons

Separation of kinetic and metabolic isotope effects in carbon-13 records preserved in reef coral skeletons

2000 ◽  
Vol 64 (6) ◽  
pp. 975-987 ◽  
Author(s):  
Jeffrey M. Heikoop ◽  
Jennifer J. Dunn ◽  
Michael J. Risk ◽  
Henry P. Schwarcz ◽  
Ted A. McConnaughey ◽  
...  
Keyword(s):  
Isotope Effects ◽  
Reef Coral ◽  
Coral Skeletons

scholarly journals Effects of ocean acidification on the dissolution rates of reef-coral skeletons

PeerJ ◽  
2013 ◽  
Vol 1 ◽  
pp. e208 ◽  
Author(s):  
Robert van Woesik ◽  
Kelly van Woesik ◽  
Liana van Woesik ◽  
Sandra van Woesik
Keyword(s):  
Ocean Acidification ◽  
Sea Level Rise ◽  
Sea Level ◽  
Average Rate ◽  
Reef Coral ◽  
Reef Growth ◽  
Dissolution Rates ◽  
Coral Skeletons ◽  
Surface Areas ◽  
Coral Colony

Ocean acidification threatens the foundation of tropical coral reefs. This study investigated three aspects of ocean acidification: (i) the rates at which perforate and imperforate coral-colony skeletons passively dissolve when pH is 7.8, which is predicted to occur globally by 2100, (ii) the rates of passive dissolution of corals with respect to coral-colony surface areas, and (iii) the comparative rates of a vertical reef-growth model, incorporating passive dissolution rates, and predicted sea-level rise. By 2100, when the ocean pH is expected to be 7.8, perforateMontiporacoral skeletons will lose on average 15 kg CaCO3m−2y−1, which is approximately −10.5 mm of vertical reduction of reef framework per year. This rate of passive dissolution is higher than the average rate of reef growth over the last several millennia and suggests that reefs composed of perforateMontiporacoral skeletons will have trouble keeping up with sea-level rise under ocean acidification. Reefs composed of primarily imperforate coral skeletons will not likely dissolve as rapidly, but our model shows they will also have trouble keeping up with sea-level rise by 2050.

The O–C diagrams of minor planets − a new approach to modelling the rotation

1999 ◽  
Vol 173 ◽  
pp. 185-188
Author(s):  
Gy. Szabó ◽  
K. Sárneczky ◽  
L.L. Kiss
Keyword(s):  
Error Analysis ◽  
Time Dependence ◽  
Theoretical Work ◽  
Minor Planet ◽  
Minor Planets ◽  
New Approach ◽  
Preliminary Results ◽  
Ccd Observations

AbstractA widely used tool in studying quasi-monoperiodic processes is the O–C diagram. This paper deals with the application of this diagram in minor planet studies. The main difference between our approach and the classical O–C diagram is that we transform the epoch (=time) dependence into the geocentric longitude domain. We outline a rotation modelling using this modified O–C and illustrate the abilities with detailed error analysis. The primary assumption, that the monotonity and the shape of this diagram is (almost) independent of the geometry of the asteroids is discussed and tested. The monotonity enables an unambiguous distinction between the prograde and retrograde rotation, thus the four-fold (or in some cases the two-fold) ambiguities can be avoided. This turned out to be the main advantage of the O–C examination. As an extension to the theoretical work, we present some preliminary results on 1727 Mette based on new CCD observations.

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