scholarly journals A standardized database of Marine Isotopic Stage 5e sea-level proxies on tropical Pacific Islands

2020 ◽  
Author(s):  
Nadine Hallmann ◽  
Gilbert Camoin ◽  
Jody M. Webster ◽  
Marc Humblet
Keyword(s):  
Coral Reef ◽  
Sea Level ◽  
Pacific Islands ◽  
New Caledonia ◽  
Tropical Pacific ◽  
Marshall Islands ◽  
Last Interglacial ◽  
Federal States ◽  
Mis 5E ◽  
Holocene Sea Level

Abstract. Marine isotope stage 5 deposits have been reported on many tropical Pacific islands. This paper presents a database compiled through the review of MIS 5e (Last Interglacial – LIG) coral reef records from islands belonging to French Polynesia (Anaa, Niau, Makatea, Moruroa, Takapoto, Bora Bora), the Hawaiian Islands (Oahu, Lana'i, Midway Atoll), Tuvalu, Kiribati (Christmas Island, Tarawa), the Cook Islands (Mangaia, Atiu, Mitiaro, Mauke, Pukapuka, Rakahanga, Rarotonga), Tonga, Samoa, the Federal States of Micronesia, the Mariana Islands, the Marshall Islands (Enewetak, Bikini), New Caledonia, Papua New Guinea, Vanuatu, Fiji and Niue. Studies reporting other sea-level indicators dated to other Pleistocene interglacials and Holocene sea-level indicators were not inserted in the database, but are included in this data description paper for completeness. Overall, about 300 studies concerning Pleistocene and Holocene sea-level indicators have been reviewed, and finally 284 data points from 35 studies on the MIS 5e have been inserted in the database. The main sea-level indicators include emerged coral reef terraces, but also reef units recovered in drill cores from a few islands, thus reflecting the diversity of tectonic settings and sampling approaches. Future research should be directed towards better constrained relative sea-level (RSL) reconstructions, including more precise chronological data, more accurate elevation measurements as well as a better refinement of the palaeo-water depth significance of coralgal assemblages. The database for Tropical Pacific Islands is available open-access at this link: http://doi.org/10.5281/zenodo.3991672 (Hallmann and Camoin, 2020).

scholarly journals A standardized database of Marine Isotopic Stage 5e sea-level proxies on tropical Pacific islands

2021 ◽  
Vol 13 (6) ◽  
pp. 2651-2699
Author(s):  
Nadine Hallmann ◽  
Gilbert Camoin ◽  
Jody M. Webster ◽  
Marc Humblet
Keyword(s):  
Coral Reef ◽  
Sea Level ◽  
Pacific Islands ◽  
Tropical Pacific ◽  
Marshall Islands ◽  
Last Interglacial ◽  
Federal States ◽  
Data Points ◽  
Mis 5E ◽  
Holocene Sea Level

Abstract. Marine Isotope Stage 5 deposits have been reported on many tropical Pacific islands. This paper presents a database compiled through the review of MIS 5e (last interglacial – LIG) coral reef records from islands belonging to French Polynesia (Anaa, Niau, Makatea, Moruroa, Takapoto, Bora Bora), the Hawaiian Islands (Oahu, Lanai, Midway Atoll), Tuvalu, Kiribati (Christmas Island, Tarawa), the Cook Islands (Mangaia, Atiu, Mitiaro, Mauke, Pukapuka, Rakahanga, Rarotonga), Tonga, Samoa, the Federal States of Micronesia, the Mariana Islands, the Marshall Islands (Enewetak, Bikini), New Caledonia, Papua New Guinea, the Solomon Islands, Vanuatu, Fiji and Niue. Studies reporting other sea-level indicators dated to other Pleistocene interglacials and Holocene sea-level indicators were not inserted in the database but are included in this data description paper for completeness. Overall, about 300 studies concerning Pleistocene and Holocene sea-level indicators have been reviewed, and finally 163 age data points and 94 relative sea-level (RSL) data points from 38 studies on the MIS 5e have been inserted in the database. An additional 155 age data points have been reviewed; i.e. the tropical Pacific islands database contains 318 age data points. The main sea-level indicators include emerged coral reef terraces, but also reef units recovered in drill cores from a few islands, thus reflecting the diversity of tectonic settings and sampling approaches. Future research should be directed towards better constrained RSL reconstructions, including more precise chronological data, more accurate elevation measurements and a better refinement of the palaeo-water-depth significance of coralgal assemblages. The database for tropical Pacific islands is available open access at this link: https://doi.org/10.5281/zenodo.3991672 (Hallmann and Camoin, 2020).

scholarly journals A standardized database of Last Interglacial (MIS 5e) sea-level indicators in Southeast Asia

2021 ◽  
Vol 13 (9) ◽  
pp. 4313-4329
Author(s):  
Kathrine Maxwell ◽  
Hildegard Westphal ◽  
Alessio Rovere
Keyword(s):  
Coral Reef ◽  
Southeast Asia ◽  
Sea Level ◽  
Sea Level Change ◽  
Last Interglacial ◽  
Level Change ◽  
Data Points ◽  
Mis 5E ◽  
Fossil Coral ◽  
Global Drivers

Abstract. Marine Isotope Stage 5e (MIS 5e; the Last Interglacial, 125 ka) represents a process analog for a warmer world. Analysis of sea-level proxies formed in this period helps in constraining both regional and global drivers of sea-level change. In Southeast Asia, several studies have reported elevation and age information on MIS 5e sea-level proxies, such as fossil coral reef terraces or tidal notches, but a standardized database of such data was hitherto missing. In this paper, we produced such a sea-level database using the framework of the World Atlas of Last Interglacial Shorelines (WALIS; https://warmcoasts.eu/world-atlas.html). Overall, we screened and reviewed 14 studies on Last Interglacial sea-level indicators in Southeast Asia, from which we report 43 proxies (42 coral reef terraces and 1 tidal notch) that were correlated to 134 dated samples. Five data points date to MIS 5a (80 ka), six data points are MIS 5c (100 ka), and the rest are dated to MIS 5e. The database compiled in this study is available at https://doi.org/10.5281/zenodo.5040784 (Maxwell et al., 2021).

scholarly journals A standardized database of Last interglacial (MIS 5e) sea-level indicators in Southeast Asia

2021 ◽  
Author(s):  
Kathrine Maxwell ◽  
Hildegard Westphal ◽  
Alessio Rovere
Keyword(s):  
Coral Reef ◽  
Southeast Asia ◽  
Sea Level ◽  
Sea Level Change ◽  
Last Interglacial ◽  
Level Change ◽  
Mis 5E ◽  
Near Future ◽  
Fossil Coral ◽  
Global Drivers

Abstract. Marine Isotope Stage 5e (the Last Interglacial, LIG) represents a process analogue for a warmer world expected for the near future. Analysis of LIG relative sea level (RSL) proxies helps in constraining both regional and global drivers of sea-level change. In Southeast Asia, several studies have reported elevation and age information on LIG RSL proxies, such as fossil coral reef terraces or tidal notches, but a standardized database of such data was hitherto missing. In this paper, we produced such sea-level database using the framework of the World Atlas of Last Interglacial Shorelines (WALIS, https://warmcoasts.eu/world-atlas.html). Overall, we screened and reviewed 14 studies on LIG sea-level indicators in Southeast Asia, from which we report 43 unique RSL proxies (42 coral reef terraces and one tidal notch), that were correlated to 134 dated samples. The database compiled in this study (Maxwell et al., 2021) is available at https://doi.org/10.5281/zenodo.4681325.

scholarly journals Last interglacial (MIS 5e) sea-level proxies in southeastern South America

2021 ◽  
Vol 13 (1) ◽  
pp. 171-197
Author(s):  
Evan J. Gowan ◽  
Alessio Rovere ◽  
Deirdre D. Ryan ◽  
Sebastian Richiano ◽  
Alejandro Montes ◽  
...  
Keyword(s):  
South America ◽  
Sea Level ◽  
Last Interglacial ◽  
Amino Acid Racemization ◽  
Exceptional Preservation ◽  
Infrared Stimulated Luminescence ◽  
Spin Resonance ◽  
Coastal Deposits ◽  
Mis 5E ◽  
Terrace Level

Abstract. Coastal southeast South America is one of the classic locations where there are robust, spatially extensive records of past high sea level. Sea-level proxies interpreted as last interglacial (Marine Isotope Stage 5e, MIS 5e) exist along the length of the Uruguayan and Argentinian coast with exceptional preservation especially in Patagonia. Many coastal deposits are correlated to MIS 5e solely because they form the next-highest terrace level above the Holocene highstand; however, dating control exists for some landforms from amino acid racemization, U∕Th (on molluscs), electron spin resonance (ESR), optically stimulated luminescence (OSL), infrared stimulated luminescence (IRSL), and radiocarbon dating (which provides minimum ages). As part of the World Atlas of Last Interglacial Shorelines (WALIS) database, we have compiled a total of 60 MIS 5 proxies attributed, with various degrees of precision, to MIS 5e. Of these, 48 are sea-level indicators, 11 are marine-limiting indicators (sea level above the elevation of the indicator), and 1 is terrestrial limiting (sea level below the elevation of the indicator). Limitations on the precision and accuracy of chronological controls and elevation measurements mean that most of these indicators are considered to be low quality. The database is available at https://doi.org/10.5281/zenodo.3991596 (Gowan et al., 2020).

scholarly journals Sensitivity of Red Sea circulation to sea level and insolation forcing during the last interglacial

2011 ◽  
Vol 7 (2) ◽  
pp. 1195-1233 ◽  
Author(s):  
G. Trommer ◽  
M. Siccha ◽  
E. J. Rohling ◽  
K. Grant ◽  
M. T. J. van der Meer ◽  
...  
Keyword(s):  
Sea Level ◽  
Red Sea ◽  
Planktonic Foraminifera ◽  
Gulf Of Aden ◽  
Last Interglacial ◽  
The Holocene ◽  
Circulation Mode ◽  
Monsoon Strength ◽  
Mis 5E ◽  
Mis 5

Abstract. This study investigates the response of Red Sea circulation to sea level and insolation changes during termination II and across the last interglacial, in comparison with termination I and the Holocene. Sediment cores from the central and northern part of the Red Sea were investigated by micropaleontological and geochemical proxies. The recovery of the planktonic foraminiferal fauna following high salinities during MIS 6 took place at similar sea-level stand (~50 m below present day), and with a similar species succession, as during termination I. This indicates a consistent sensitivity of the basin oceanography and the plankton ecology to sea-level forcing. Based on planktonic foraminifera, we find that increased water exchange with the Gulf of Aden especially occurred during the sea-level highstand of interglacial MIS 5e. From MIS 6 to the peak of MIS 5e, northern Red Sea SST increased from 21 °C to 25 °C, with about 3 °C of this increase taking place during termination II. Changes in planktonic foraminiferal assemblages indicate that the development of the Red Sea oceanography during MIS 5 was strongly determined by insolation and monsoon strength. The SW Monsoon summer circulation mode was enhanced during the termination, causing low productivity in northern central Red Sea core KL9, marked by high abundance of G. sacculifer, which – as in the Holocene – followed summer insolation. Core KL11 records the northern tip of the intruding intermediate water layer from the Gulf of Aden and its planktonic foraminifera fauna shows evidence for elevated productivity during the sea-level highstand in the southern central Red Sea. By the time of MIS 5 sea-level regression, elevated organic biomarker BIT values suggest denudation of soil organic matter into the Red Sea and high abundances of G. glutinata, and high reconstructed chlorophyll-a values, indicate an intensified NE Monsoon winter circulation mode. Our results imply that the amplitude of insolation fluctuations, and the resulting monsoon strength, strongly influence the Red Sea oceanography during sea-level highstands by regulating the intensity of water exchange with the Gulf of Aden. These processes are responsible for the observation that MIS 5e/d is characterized by higher primary productivity than the Holocene.

Tarophagus proserpina. [Distribution map].

1972 ◽  
Author(s):  
Keyword(s):  
Pacific Islands ◽  
New Caledonia ◽  
Solomon Islands ◽  
Marshall Islands ◽  
Ryukyu Islands ◽  
Distribution Map ◽  
Society Islands ◽  
Caroline Islands ◽  
New Hebrides ◽  
New Distribution

Abstract A new distribution map is provided for Tarophagus proserpina (Kirk.) (including T. p. australis Fennah) (Megamelus proserpina Kirk.) (Hemipt., Delphacidae) (Taro Leafhopper). Host Plants: Colocasia spp., Alocasia spp. Information is given on the geographical distribution in ASIA, Indonesia, Malaysia, Philippines, Ryukyu Islands, AUSTRALASIA and PACIFIC ISLANDS, Australia, Caroline Islands, Cook Islands, Fiji, Hawaii, Marianas Islands, Marshall Islands, New Caledonia, New Hebrides, Niue, Samoa, Society Islands, Solomon Islands, Tonga, Wallis Islands.

Ferrisia virgata. [Distribution map].

1966 ◽  
Author(s):  
Keyword(s):  
West Indies ◽  
Pacific Islands ◽  
New Caledonia ◽  
Solomon Islands ◽  
Marshall Islands ◽  
Mariana Islands ◽  
Distribution Map ◽  
Caroline Islands ◽  
New Hebrides ◽  
Congo Brazzaville

Abstract A new distribution map is provided for Ferrisia virgata (Ckll.) (=Ferrisiana virgata (Ckll.)) (Hemipt., Coccoidca). Host Plants: Cacao, Coffee, Citrus, Cotton, Jute, etc., polyphagous. Information is given on the geographical distribution in ASIA, Burma, Cambodia, Ceylon, China, Formosa, Hong Kong, India, Indonesia, Malaya, Pakistan, Pescadores Islands, Philippine Islands, Sabah, Sarawak, South Arabian Protectorates, Thailand, AFRICA, Angola, Cameroun, Congo (Brazzaville), Belgian Congo, Egypt, Ethiopia, Ghana, Ivory Coast, Kenya, Madagascar, Malawi, Mauritius, Mozambique, Nigeria, Principé, Republic of South Africa, Rhodesia, São Tomé, Senegal, Seychelles, Sierra Leone, Somalia, Sudan, Tanzania, Togo, Uganda, Zambia, AUSTRALASIA and PACIFIC ISLANDS, Australia, Caroline Islands, Fiji, Gilbert Islands, Hawaii, Johnston Island, Line Islands, Mariana Islands, Marquesas Islands, Marshall Islands, New Caledonia, New Hebrides, Panua & New Guinea, Solomon Islands, Tonga, Wallis Islands, NORTH AMERICA, Mexico, U.S.A., CENTRAL AMERICA and WEST INDIES, Costa Rica, Honduras, Nicaragua, Panama, West Indies, SOUTH AMERICA, Argentina, Brazil, Colombia, Guyana, Surinam, Venezuela.

A standardized database of Last Interglacial sea-level indicators in southeast Asia: Records from coral reef terraces in a tectonically complex region

2021 ◽  
Author(s):  
Kathrine Maxwell ◽  
Hildegard Westphal ◽  
Alessio Rovere
Keyword(s):  
Coral Reef ◽  
Southeast Asia ◽  
Sea Level ◽  
Tectonic Setting ◽  
Sea Level Change ◽  
The Philippines ◽  
Sea Level Changes ◽  
Last Interglacial ◽  
Level Change ◽  
Se Asia

<p>The Last Interglacial (LIG), as well as other warmer periods in the Earth’s geologic history, provides an analogue for predicted warming conditions in the near future. Analysis of sea-level indicators during this period is important in constraining regional drivers of relative sea-level change (RSL) and in modeling future trajectories of sea-level rise. In southeast Asia, several studies have been done to examine LIG sea-level indicators such as coral reef terraces and tidal notches. A synthesis of the state-of-the-art of the LIG RSL indicators in the region, meanwhile, has yet to be done. We reviewed over 50 published works on the LIG RSL indicators in southeast Asia and used the framework of the World Atlas of Last Interglacial Shorelines (WALIS) in building a standardized database of previously published LIG RSL indicators in the region. In total, we identified 38 unique RSL indicators and inserted almost 140 ages in the database. Available data from Indonesia, the Philippines, and East Timor points to variable elevation of sea-level indicators during the LIG highlighting the complex tectonic setting of this region. Variable uplift rates (from as low as 0.02 to as high as 1.1 m/ka) were reported in the study areas echoing various collision and subduction processes influencing these sites. Although several age constraints and elevation measurements have been provided by these studies, more data is still needed to shed more light on the RSL changes in the region. With this effort under the WALIS framework, we hope to identify gaps in the LIG RSL indicators literature in SE Asia and recognize potential areas that can be visited for future work. We also hope that this initiative will help us further understand the different drivers of past sea-level changes in SE Asia and will provide inputs for projections of sea-level change in the future.</p>

scholarly journals Exploring coral reef responses to millennial scale climatic forcings: insights from a 1-D numerical tool pyReef-Core v1.0

2018 ◽  
Author(s):  
Tristan Salles ◽  
Jodie Pall ◽  
M. Jody Webster ◽  
Belinda Dechnik
Keyword(s):  
Coral Reef ◽  
Sea Level ◽  
Environmental Conditions ◽  
Environmental Changes ◽  
Initial Conditions ◽  
Last Interglacial ◽  
Vertical Growth ◽  
Environmental Processes ◽  
The Impact ◽  
Drill Cores

Abstract. Assemblages of corals characterise specific reef biozones and the environmental conditions that change laterally across a reef and with depth. Drill cores through fossil reefs record the time- and depth-distribution of assemblages, which captures a partial history of the vertical growth response of reefs to changing palaeoenvironmental conditions. The effects of environmental factors on reef growth are well understood on ecological time-scales but are poorly constrained at centennial to millennial timescales. pyReef-Core is a stratigraphic forward model designed to solve the inverse problem of unobservable environmental processes controlling vertical reef development by simulating the physical, biological and sedimentological processes that determine vertical assemblage changes in drill cores. It models the stratigraphic development of coral reefs at centennial to millennial timescales under environmental forcing conditions including accommodation (relative sea level upward growth), oceanic variability (flow speed, nutrients, pH and temperature), sediment input and tectonics. It also simulates competitive coral assemblage interactions using the generalised Lotka-Volterra system of equations (GLVEs) and can be used to infer the influence of environmental conditions on the zonation and vertical accretion and stratigraphic succession of coral assemblages over decadal timescales and greater. The tool can quantitatively test carbonate platform development under the influence of ecological and environmental processes, and efficiently interpret vertical growth and karstification patterns observed in drill cores. We provide two realistic case studies illustrating the basic capabilities of the model and use it to reconstruct (1) the Holocene history (from 8500 years to present) of coral community responses to environmental changes, and (2) the evolution of an idealised coral-reef core since the Last Interglacial (from 140 000 years to present) under the influence of sea-level change, subsidence and karstification. We find that the model reproduces the details of the formation of existing coral-reef stratigraphic sequences both in terms of assemblages succession, accretion rates and depositional thicknesses. It can be applied to estimate the impact of changing environmental conditions on growth rates and patterns under many different settings and initial conditions.

Chapter 6 The Loyalty Islands and Ridge, New Caledonia

2020 ◽  
Vol 51 (1) ◽  
pp. 131-145 ◽  
Author(s):  
P. Maurizot ◽  
J. Collot ◽  
D. Cluzel ◽  
M. Patriat
Keyword(s):  
Coral Reef ◽  
Subduction Zone ◽  
Sea Level ◽  
Middle Miocene ◽  
New Caledonia ◽  
Tectonic Deformation ◽  
Sea Level Changes ◽  
Volcaniclastic Rocks ◽  
Carbonate Deposits

AbstractThe Loyalty Ridge lies to the east and NE of the Norfolk Ridge. The three main Loyalty Islands (Maré, Lifou and Ouvéa) emerge from the ridge at the same latitude as Grande Terre. The islands are uniformly composed of carbonate deposits, except for Maré, where Middle Miocene intra-plate basalts and associated volcaniclastic rocks form restricted outcrops. Miocene rhodolith limestones constitute the bulk of the carbonate cover of the three islands. On Maré, these platform accumulations are locally topped by a dolomitic hardground, which, in turn, is covered by Pliocene–Pleistocene coral-bearing formations. These coral reef constructions are preserved as elevated rims over all three islands and define an atoll stage in their development. The Pleistocene–Holocene palaeoshoreline indicators include fringing bioconstructions and marine notches and record both eustatic sea-level changes and tectonic deformation. The ridge has been in the forebulge region in front of the active Vanuatu subduction zone since the Pliocene and each of the three islands has been uplifted and tilted to varying degrees. Offshore, the Loyalty Ridge continues northwards to the d'Entrecasteaux Zone and southwards to the Three Kings Ridge. Although typically volcanic, the nature of the deep Loyalty Ridge remains unknown.

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