Great Earthquakes and Tsunamis of the Past 2000 Years at the Salmon River Estuary, Central Oregon Coast, USA

2004 ◽  
Vol 94 (4) ◽  
pp. 1276-1292 ◽  
Author(s):  
A. R. Nelson
Keyword(s):  
River Estuary ◽  
Oregon Coast ◽  
Salmon River ◽  
The Past ◽  
Great Earthquakes ◽  
Past 2000 Years

scholarly journals Identifying the Greatest Earthquakes of the Past 2000 Years at the Nehalem River Estuary, Northern Oregon Coast, USA

10.5334/oq.70 ◽  
2020 ◽  
Vol 6 ◽  
Author(s):  
Alan R. Nelson ◽  
Andrea D. Hawkes ◽  
Yuki Sawai ◽  
Simon E. Engelhart ◽  
Rob Witter ◽  
...  
Keyword(s):  
River Estuary ◽  
Oregon Coast ◽  
The Past ◽  
Past 2000 Years

Great-earthquake paleogeodesy and tsunamis of the past 2000 years at Alsea Bay, central Oregon coast, USA

2008 ◽  
Vol 27 (7-8) ◽  
pp. 747-768 ◽  
Author(s):  
Alan R. Nelson ◽  
Yuki Sawai ◽  
Anne E. Jennings ◽  
Lee-Ann Bradley ◽  
Linda Gerson ◽  
...  
Keyword(s):  
Great Earthquake ◽  
Oregon Coast ◽  
The Past ◽  
Past 2000 Years

General characteristics of climate changes during the past 2000 years in China

2012 ◽  
Vol 56 (2) ◽  
pp. 321-329 ◽  
Author(s):  
QuanSheng Ge ◽  
JingYun Zheng ◽  
ZhiXin Hao ◽  
HaoLong Liu
Keyword(s):  
Climate Changes ◽  
The Past ◽  
Past 2000 Years

Late Holocene Sea Temperatures along the Central California Coast

1999 ◽  
Vol 51 (1) ◽  
pp. 74-82 ◽  
Author(s):  
Terry L. Jones ◽  
Douglas J. Kennett
Keyword(s):  
Late Holocene ◽  
Fish Bone ◽  
Archaeological Sites ◽  
Central California ◽  
The Past ◽  
Past 2000 Years ◽  
Terrestrial Productivity ◽  
Continued Use ◽  
Mussel Shells ◽  
Marine Productivity

AbstractMussel shells from central California coastal archaeological sites record changes in sea surface temperatures in the past 2000 years. Water temperatures, inferred from oxygen isotopes in the shells, were about 1°C cooler than present and stable between 2000 and 700 yr ago. Between about 700 and 500 yr ago, seasonal variation was greater than present, with extremes above and below historic levels. Water temperatures were 2–3°C cooler than today 500–300 yr ago. The interval of variable sea temperatures 700–500 yr ago partially coincided with an interval of drought throughout central California. A coincident disruption in human settlement along the coast suggests movements of people related to declining water sources. Quantities of fish bone in central coast middens dating to this same period are high relative to other periods, and the remains of northern anchovies, a species sensitive to changing oceanographic conditions, are also abundant. The continued use of local fisheries suggests that changes in settlement and diet were influenced more by drought than by a decrease in marine productivity, as fish provided a staple during an interval of low terrestrial productivity.

scholarly journals Fire in ice: two millennia of Northern Hemisphere fire history from the Greenland NEEM ice core

2014 ◽  
Vol 10 (1) ◽  
pp. 809-857 ◽  
Author(s):  
P. Zennaro ◽  
N. Kehrwald ◽  
J. R. McConnell ◽  
S. Schüpbach ◽  
O. Maselli ◽  
...  
Keyword(s):  
Black Carbon ◽  
Biomass Burning ◽  
Fire History ◽  
Global Climate ◽  
Ice Cores ◽  
Dominant Factor ◽  
The Past ◽  
Past 2000 Years ◽  
Isotopic Analyses ◽  
Fire Activity

Abstract. Biomass burning is a major source of greenhouse gases and influences regional to global climate. Pre-industrial fire-history records from black carbon, charcoal and other proxies provide baseline estimates of biomass burning at local to global scales, but there remains a need for broad-scale fire proxies that span millennia in order to understand the role of fire in the carbon cycle and climate system. We use the specific biomarker levoglucosan, and multi-source black carbon and ammonium concentrations to reconstruct fire activity from the North Greenland Eemian (NEEM) ice cores (77.49° N; 51.2° W, 2480 m a.s.l.) over the past 2000 years. Increases in boreal fire activity (1000–1300 CE and 1500–1700 CE) over multi-decadal timescales coincide with the most extensive central and northern Asian droughts of the past two millennia. The NEEM biomass burning tracers coincide with temperature changes throughout much of the past 2000 years except for during the extreme droughts, when precipitation changes are the dominant factor. Many of these multi-annual droughts are caused by monsoon failures, thus suggesting a connection between low and high latitude climate processes. North America is a primary source of biomass burning aerosols due to its relative proximity to the NEEM camp. During major fire events, however, isotopic analyses of dust, back-trajectories and links with levoglucosan peaks and regional drought reconstructions suggest that Siberia is also an important source of pyrogenic aerosols to Greenland.

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