A new interpolation method to measure delta evolution and sediment flux: Application to the late Holocene coastal plain of the Argens River in the western Mediterranean

2020 ◽  
Vol 424 ◽  
pp. 106159
Author(s):  
Jean-Philippe Degeai ◽  
Frédérique Bertoncello ◽  
Matteo Vacchi ◽  
Laurent Augustin ◽  
Alain de Moya ◽  
...  
2006 ◽  
Vol 222 ◽  
pp. 424-438 ◽  
Author(s):  
Kosmas Pavlopoulos ◽  
Panagiotis Karkanas ◽  
Maria Triantaphyllou ◽  
Efthimios Karymbalis ◽  
Theodora Tsourou ◽  
...  

2005 ◽  
Vol 63 (3) ◽  
pp. 368-373 ◽  
Author(s):  
Ervin G. Otvos

A bottomland flora that prevailed between ∼9900 and 6000 cal yr B.P. in a North Carolina stream valley may not reflect a regionally much wetter Atlantic climate, coeval with record drought in the Great Plains region and assumed dry Gulf coastal conditions. Such conditions were inferred for 6000 ± 1000 yr ago when the Bermuda High may have consistently occupied summer positions far to the NE. Arid episodes coeval with the Little River local wet interval are known from eolian sediments and pollen spectra in the Atlantic and the Gulf coastal plain. For multiple reasons, the regional extent, intensity, and duration of coastal aridity and alternating wet phases and the Bermuda High positions are not yet adequately constrained. The climate and edaphic causes for the steadily growing predominance of southern pines over hardwoods, achieved between ∼8900 and 4200 cal yr B.P. at different sites at different times are similarly still unresolved. New data from Shelby Lake, AL, reconfirms that no credible field or other proxy evidence exists for a previously postulated “catastrophic Gulf hurricane phase” in the late Holocene.


2006 ◽  
Vol 30 (4) ◽  
pp. 513-530 ◽  
Author(s):  
Jonathan D. Phillips ◽  
Michael C. Slattery

Coastal and marine sedimentary archives are sometimes used as indicators of changes in continental sediment production and fluvial sediment transport, but rivers crossing coastal plains may not be efficient conveyors of sediment to the coast. Where this is the case, changes in continental sediment dynamics are not evident at the river mouth. Stream power is typically low and accommodation space high in coastal plain river reaches, resulting in extensive alluvial storage upstream of estuaries and correspondingly low sediment loads at the river mouth. In some cases there is a net loss of sediment in lower coastal plain reaches, so that sediment input from upstream exceeds yield at the river mouth. The lowermost sediment sampling stations on many rivers are too far upstream of the coast to represent lower coastal plain sediment fluxes, and thus tend to overestimate sediment yields. Sediment which does reach the river mouth is often trapped in estuaries and deltas. Assessment of sediment flux from coastal plain rivers is also confounded by the deceptively simple question of the location of the mouth of the river. On low-gradient coastal plains and shelves, the location of the river mouth may have varied by hundreds of kilometers due to sea-level change. The mouth may also differ substantially according to whether it is defined based on channel morphology, network morphology, hydrographic or hydrochemical criteria, elevation of the channel relative to sea level, or the locus of deposition. Further, while direct continent-to-ocean flux may be very low at current sea-level stands, sediment stored in estuaries and lower coastal plain alluvium (including deltas) may eventually become part of the marine sedimentary package. The role of accommodation space in coastal plain alluvial sediment storage has been emphasized in previous work, but low transport capacity controlled largely by slope is also a crucial factor, as we illustrate with examples from Texas.


Geomorphology ◽  
2016 ◽  
Vol 270 ◽  
pp. 55-70 ◽  
Author(s):  
H.J. Pierik ◽  
K.M. Cohen ◽  
E. Stouthamer
Keyword(s):  

2012 ◽  
Vol 23 (1) ◽  
pp. 39-51 ◽  
Author(s):  
H. Lantuit ◽  
W. H. Pollard ◽  
N. Couture ◽  
M. Fritz ◽  
L. Schirrmeister ◽  
...  

2013 ◽  
Vol 303 ◽  
pp. 93-106 ◽  
Author(s):  
A. Amorosi ◽  
M. Bini ◽  
S. Giacomelli ◽  
M. Pappalardo ◽  
C. Ribecai ◽  
...  

2010 ◽  
Vol 6 (6) ◽  
pp. 807-816 ◽  
Author(s):  
C. Martín-Puertas ◽  
F. Jiménez-Espejo ◽  
F. Martínez-Ruiz ◽  
V. Nieto-Moreno ◽  
M. Rodrigo ◽  
...  

Abstract. A combination of marine (Alboran Sea cores, ODP 976 and TTR 300 G) and terrestrial (Zoñar Lake, Andalucia, Spain) geochemical proxies provides a high-resolution reconstruction of climate variability and human influence in the southwestern Mediterranean region for the last 4000 years at inter-centennial resolution. Proxies respond to changes in precipitation rather than temperature alone. Our combined terrestrial and marine archive documents a succession of dry and wet periods coherent with the North Atlantic climate signal. A dry period occurred prior to 2.7 cal ka BP – synchronously to the global aridity crisis of the third-millennium BC – and during the Medieval Climate Anomaly (1.4–0.7 cal ka BP). Wetter conditions prevailed from 2.7 to 1.4 cal ka BP. Hydrological signatures during the Little Ice Age are highly variable but consistent with more humidity than the Medieval Climate Anomaly. Additionally, Pb anomalies in sediments at the end of the Bronze Age suggest anthropogenic pollution earlier than the Roman Empire development in the Iberian Peninsula. The Late Holocene climate evolution of the in the study area confirms the see-saw pattern between the eastern and western Mediterranean regions and the higher influence of the North Atlantic dynamics in the western Mediterranean.


2010 ◽  
Vol 6 (5) ◽  
pp. 1655-1683 ◽  
Author(s):  
C. Martín-Puertas ◽  
F. Jiménez-Espejo ◽  
F. Martínez-Ruiz ◽  
V. Nieto-Moreno ◽  
M. Rodrigo ◽  
...  

Abstract. A combination of marine (Alboran Sea cores, ODP 976 and TTR 300 G) and terrestrial (Zoñar Lake, Andalucia, Spain) paleoclimate information using geochemical proxies provides a high resolution reconstruction of climate variability and human influence in southwestern Mediterranean region for the last 4000 years at inter-centennial resolution. Proxies respond to changes in precipitation rather than temperature alone. Our archive documents a succession of dry and wet periods coherent with the North Atlantic climate signal. Drier stages occurred prior to 2.7 cal ka BP, well-correlated with the global aridity crisis of the third-millennium BC, and during the Medieval Warm Period (1.4–0.7 cal ka BP). Wetter conditions prevailed from 2.7 to 1.4 cal ka BP and after the Medieval Warm Period and the onset of the Little Ice Age. Hydrological signatures during the Little Ice Age are highly variable but consistent with more humidity that the period before. Additionally, Pb anomalies in sediments at the end of Bronze Age suggest anthropogenic pollution earlier than the Roman Empire development in the Iberian Peninsula. The evolution of the climate in the study area during the Late Holocene confirms the see-saw pattern previously shown between eastern and western Mediterranean regions and suggests a higher influence of the North Atlantic dynamics in the western Mediterranean.


SPAFA Journal ◽  
2020 ◽  
Vol 4 ◽  
Author(s):  
John Peterson ◽  
Archie Tiauzon ◽  
Mark Horrocks ◽  
Maria Kottermair

The Jesuit House was built in 1730 on land reclaimed from the Tinago Marsh at the edge of the early Spanish settlement of Cebu City, Philippines, two centuries after it was first encountered by the Spanish explorer Magellan. As the city expanded from its core areas ca. 1565 around Fort San Pedro, Plaza Independencia, and the sites of Santo Nino Church and the Cebu Cathedral, waterways were drained and filled, and canals were dredged to extend the urban Spanish grid. Archaeological excavations at the Jesuit House and in the nearby Casa Gorordo Annex project document these changes in the urban landscape. Soil profiles throughout the downtown coastal plain in conjunction with chronostratigraphic data from the excavations demonstrate its submergence during the late Holocene high sea still-stand, followed by dissection by local drainages and the Guadalupe River. Relict channels and distinct interfluvial terraces are observed showing a migrating series of channels along the shoreline as well as a distinct escarpment at the back of the plain that marked the limits of marine intrusion during the high still-stand. Visayans and Spanish settlers selected higher ground for settlement in the interfluves and modified lowland areas such as the marshlands one of which became the Parian District of urban Cebu. Archaeological investigations at the Jesuit House and the Casa Gorordo Annex document the environmental history as well as the transition from native to colonial lifeways at the edge of Empire.Ang Balay Hesuita natukod niadtong tuig 1730 pinaagi sa pagtambak og yuta sa Katunggan sa Tinago diha sa ngilit sa nag-unang nahimutangan sa mga Katsila sa Sugbu, Pilipinas, mga duha ka gatusan ka tuig human kini nakaplagan sa Katsilang manunuhid nga si Magallanes. Sa dihang nilapad ang lungsod, gibana-bana 1565, nga naglangkob sa Kotang San Pedro, Hawan Independencia, ug mga luna sa Simbahang Santo Nino ug Katedral sa Sugbu, ang mga katunggan gipahubas ug gitambaka’g yuta, ug ang mga kanal gihawas-asan aron sa pagpalugway sa gilapdon sa lungsuranong Katsila. Makita kining mga kausaban sa lungsod pinaagi sa mga nakubkuban sa mga arkeyologo sa Balay Hesuita ug sa Sumpay sa Balay Gorordo nga duol niini. Ang mga takilirang hulagway’ng yuta sa tibuok kabaybayunang patag sa maong lungsod, tali sa datos nga kronostratigrapiko nga nakuha pinaagi sa mga arkeyolohikong pangubkob nagapakita sa pagkalubog niini kaniadto sa kinatas-ang naabtan sa dagat sa panahon sa Holosino, gisundan kini sa pagtabas-tabas pinaagi sa mga gagmay’ng sapa ug sa Subang Guadalupe. Makita sa mga karaang giagian sa katubigan ug tataw’ng mga hinagdanan ang nagsunod-sunod nga mga agianan sa tubig subay sa baybayon ug ang mga tataw nga tagaytay sa likod sa patag nga maoy nagpaila kung asa taman niabot ang kadagatan sa panahon sa kintas-ang gihunungan niini kaniadto. Gipili sa mga lumolupyo nga Bisaya ug Katsila ang hataas nga mga lugar para ila kining puy-an taliwala sa mga dagayday ug ilang giusab ang mga basa nga mga lugar sa ubos niini, sama sa mga katunggan diin usa niini ang Ditritong Parian sa Sugbu. Ang mga pagtulun-ang arkeyologo sa Balay Hesuita ug sa Sumpay sa Balay Gorordo nagapakita sa kaagi sa kalikupan lakip na ang pag-usab gikan sa lumadnon ngadto sa kolonyal nga mga pamaagi sa kinabuhi diha sa ngilit sa Imperyo.


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