Modern and Late Holocene Retrogressive Thaw Slump Activity on the Yukon Coastal Plain and Herschel Island, Yukon Territory, Canada

2012 ◽  
Vol 23 (1) ◽  
pp. 39-51 ◽  
Author(s):  
H. Lantuit ◽  
W. H. Pollard ◽  
N. Couture ◽  
M. Fritz ◽  
L. Schirrmeister ◽  
...  
Keyword(s):  
Coastal Plain ◽  
Late Holocene ◽  
Yukon Territory ◽  
Retrogressive Thaw Slump

scholarly journals Late Holocene moisture balance variability in the southwest Yukon Territory, Canada

2007 ◽  
Vol 26 (1-2) ◽  
pp. 130-141 ◽  
Author(s):  
Lesleigh Anderson ◽  
Mark B. Abbott ◽  
Bruce P. Finney ◽  
Stephen J. Burns
Keyword(s):  
Late Holocene ◽  
Yukon Territory ◽  
Moisture Balance

Massive ground ice and ice-cored terrain near Sabine Point, Yukon Coastal Plain

1988 ◽  
Vol 25 (11) ◽  
pp. 1846-1856 ◽  
Author(s):  
D. G. Harry ◽  
H. M. French ◽  
W. H. Pollard
Keyword(s):  
Coastal Plain ◽  
Yukon Territory ◽  
Ground Ice ◽  
Flow Slides ◽  
Petrographic Analyses ◽  
Multiple Cycles ◽  
Lacustrine Basins

Massive ground ice, 5–6 m in thickness, is exposed within retrogressive thaw flow slides near Sabine Point, Yukon Territory. The ice is present near the upper surface of Buckland Till and is overlain and thaw truncated by mudflow sediments and a thick unit of peat and organic silt. Cryotextural and petrographic analyses suggest that the ice formed primarily by segregation processes. The ice occurs within an area of rolling terrain, surrounded by lacustrine basins. This may form a remnant of an initial post-Buckland surface, degraded by multiple cycles of thermokarst during the period 14 000 to 8000 years BP.

Paleoenvironmental Evolution of the Coastal Plain of Marathon, Greece, during the Late Holocene: Depositional Environment, Climate, and Sea Level Changes

2006 ◽  
Vol 222 ◽  
pp. 424-438 ◽  
Author(s):  
Kosmas Pavlopoulos ◽  
Panagiotis Karkanas ◽  
Maria Triantaphyllou ◽  
Efthimios Karymbalis ◽  
Theodora Tsourou ◽  
...  
Keyword(s):  
Sea Level ◽  
Coastal Plain ◽  
Late Holocene ◽  
Depositional Environment ◽  
Sea Level Changes ◽  
Paleoenvironmental Evolution ◽  
And Sea Level

Holocene aridity and storm phases, Gulf and Atlantic coasts, USA

2005 ◽  
Vol 63 (3) ◽  
pp. 368-373 ◽  
Author(s):  
Ervin G. Otvos
Keyword(s):  
North Carolina ◽  
Great Plains ◽  
Coastal Plain ◽  
Late Holocene ◽  
Gulf Coastal Plain ◽  
Southern Pines ◽  
Eolian Sediments

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.

A new GIS approach for reconstructing and mapping dynamic late Holocene coastal plain palaeogeography

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

scholarly journals Middle to late Holocene environmental evolution of the Pisa coastal plain (Tuscany, Italy) and early human settlements

2013 ◽  
Vol 303 ◽  
pp. 93-106 ◽  
Author(s):  
A. Amorosi ◽  
M. Bini ◽  
S. Giacomelli ◽  
M. Pappalardo ◽  
C. Ribecai ◽  
...  
Keyword(s):  
Coastal Plain ◽  
Late Holocene ◽  
Environmental Evolution ◽  
Human Settlements ◽  
Early Human

The thermal regime of a retrogressive thaw slump near Mayo, Yukon Territory

2000 ◽  
Vol 37 (7) ◽  
pp. 967-981 ◽  
Author(s):  
C R Burn
Keyword(s):  
Dominant Mode ◽  
Yukon Territory ◽  
Permafrost Degradation ◽  
Near Surface ◽  
Ground Temperatures ◽  
Fine Grained ◽  
Data Loggers ◽  
Development Data ◽  
Retrogressive Thaw Slump ◽  
Frost Penetration

The development of a retrogressive thaw slump near Mayo, Yukon Territory, has been traced from initiation by bank erosion (~1949) of the Stewart River to stabilization in 1993-1994. The stabilized headwall of the slump is 450 m from the river, and the slope of the slump floor is 3°. A transect of the slump from the river to the stabilized headwall was drilled in July 1995, to determine the extent and rate of permafrost degradation in the slump floor. Thermistors were placed in access tubes to 12 m depth at five sites, four near the transect and one in undisturbed terrain, to determine the magnitude of thermal disturbance due to slump development. Data loggers at the sites recorded the ground temperature at 1 m depth for two years from August 1995. The annual mean ground temperatures measured by the data loggers varied between 1.2° and 1.8°C in the slump, compared with -2.4°C in undisturbed ground, indicating a disturbance of about 4°C due to slumping. The depth of thaw in the slump floor is consistent with the Stefan solution for thawing of permafrost. Conduction is the dominant mode of heat transfer in the slump, where the soil is fine grained and there is almost no organic horizon. Winter ground temperatures at 1 m depth were nearly 6°C warmer in the slump than in the surrounding forest, even though snow depths were similar, due to the release of latent heat during prolonged frost penetration. These data demonstrate the importance of subsurface conditions on near-surface ground temperatures in winter.

scholarly journals Environmental History of an Early Spanish Settlement in the Visayas, Philippines: Excavations in the Parian District of Cebu City | Kasaysayang Pangkalikupan sa usa ka Karaang Puluy-anan Katsila sa Kabisay-an, Pilipinas: Mga Nakubkoban sa Distritong Parian, Lungsod sa Sugbu

SPAFA Journal ◽  
2020 ◽  
Vol 4 ◽  
Author(s):  
John Peterson ◽  
Archie Tiauzon ◽  
Mark Horrocks ◽  
Maria Kottermair
Keyword(s):  
Environmental History ◽  
Coastal Plain ◽  
Late Holocene ◽  
Urban Landscape ◽  
Soil Profiles ◽  
San Pedro ◽  
Guadalupe River ◽  
History Of ◽  
Core Areas ◽  
The City

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.

Peat layer accumulation and post‐burial deformation during the mid‐late Holocene in the Po coastal plain (Northern Italy)

2019 ◽  
Vol 31 (3) ◽  
pp. 621-639 ◽  
Author(s):  
Luigi Bruno ◽  
Bruno Campo ◽  
Andrea Di Martino ◽  
Wan Hong ◽  
Alessandro Amorosi
Keyword(s):  
Coastal Plain ◽  
Late Holocene ◽  
Northern Italy ◽  
Peat Layer
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