Dataset Title Permafrost investigations in Central Yakutia (Siberia)
Dataset Purpose The impact of the break-up on the erosion process on the head of several islands was analysed from the Lena River (Yakutia). The aim of the program was to quantify the relative influence of fluvial thermal erosion during the ice breakup of the Lena River. In situ measurements of the thermal regime of the frozen islands are carried out.
Dataset Abstract Permafrost investigations in Central Yakutia (Siberia) carried out at GEOPS laboratory (Laboratoire de Geographie Physique, Orsay University, France) in cooperation with the Permafrost Institute (Yakutsk, Russia)
Acquisition Methodology The thermal regime of the islands along the Lena river is monitored using a HOBO instrument, which measures the temperature of the layer every hour. The erosion rate if also monitor with topographic measurements taken every year after the ice break up in the spring. The islands can move around 10-50 m per year. As part of the project they also carried out photo-interpretation of time series of satellite GeoEye images (50cm/pixel) and also field studies where the landslides were mapped and the processes and origin of melting of ice-wedges was examined. During the field observations the geographical distribution and orientation of the lakes was carried out.
Quality
Dataset DOI http://ipa.arcticportal.org/reports-2012/706-france/652-france.html
Access Constraints The data is not freely available yet, there are a number of papers under review. Contact the scientific coordinator for further details
Use Constraints
Keywords Permafrost, Siberia, Lena river, ground-observations
Status In work
Temporal Coverage
Start Date 2008-05-01
Stop Date
Project 0
Project short Name ANR Climaflu project
Project long Name Agence Nationale de la Recherche - Climatic change and fluvial dynamic of the Lena river
URL http://geops.geol.u-psud.fr/spip.php?article112&lang=en
Description This project is dedicated to the consequences of climate warming on erosion rates on periglacial environments and their impact on human activity. It has been recently reported that climatic change deeply influences arctic rivers. The Yakutia region is a particularly interesting area for its spectacular floods, for its lowest temperature records as well as for its maximum thickness of permafrost. The hydrology of the Lena and its tributaries is characterized by an extremely episodic flow regime. In Spring, during the break up period, the joined increase of the water discharge and stream temperature contribute to an active thermal erosion along the frozen river banks.
URL Type VIEW PROJECT HOME PAGE
Contact 0
Role Investigator
Full Name Fedorov Alexander
Email fedorov@mpi.ysn.ru
Phone +7(4112)390896
Fax +7(4112)334476
Organism short Name MPI
Organism long Name Melnikov Permafrost Institute of the Siberian Branch of the Russian Academy of Sciences
URL http://mpi.ysn.ru/index.php/en/
Description
URL Type VIEW PROJECT HOME PAGE
Address (Line1) Melnikov Permafrost Institute SB RAS, 36 Merzlotnaya Str
Address (Line2)
City Yakutsk
Postal Code 677010
Country Russian Federation
Contact 1
Role Investigator
Full Name Dupeyrat Laure
Email laure.dupeyrat@u-psud.fr
Phone +33(0)169156161
Fax
Organism short Name GEOPS
Organism long Name Geoscience Paris Sud
URL http://geops.geol.u-psud.fr/
Description
URL Type VIEW PROJECT HOME PAGE
Address (Line1) Laboratory GEOPS, Bât. 509 - Université Paris-Sud
Address (Line2)
City Orsay
Postal Code 91400
Country France
Contact 2
Role Investigator
Full Name Gargani Julien
Email julien.gargani@u-psud.fr
Phone +33(0)169157592
Fax +33(0)169154882
Organism short Name GEOPS
Organism long Name Geoscience Paris Sud
URL http://geops.geol.u-psud.fr/
Description
URL Type VIEW PROJECT HOME PAGE
Address (Line1) Laboratory GEOPS, Bât. 509 - Université Paris-Sud
Address (Line2)
City Orsay
Postal Code 91400
Country France
Contact 3
Role Investigator
Full Name Gautier Emmanuele
Email emmanuele.gautier@cnrs-bellevue.fr
Phone +33(0)145075585
Fax
Organism short Name LGP
Organism long Name Laboratoire de Géographie Physique
URL http://www.lgp.cnrs-bellevue.fr
Description
URL Type VIEW PROJECT HOME PAGE
Address (Line1) Laboratoire de Géographie Physique, 1 place Aristide Briand
Address (Line2)
City Meudon
Postal Code 92195
Country France
Contact 4
Role Investigator
Full Name Séjourné Antoine
Email antoine.sejourne@u-psud.fr
Phone +33(0)169154929
Fax +33(0)169154882
Organism short Name GEOPS
Organism long Name Geoscience Paris Sud
URL http://geops.geol.u-psud.fr/
Description
URL Type VIEW PROJECT HOME PAGE
Address (Line1) Laboratory GEOPS, Bât. 509 - Université Paris-Sud
Address (Line2)
City Orsay
Postal Code 91400
Country France
Contact 5
Role Investigator
Full Name Costard François
Email francois.costard@u-psud.fr
Phone +33(0)169154910
Fax
Organism short Name GEOPS
Organism long Name Geoscience Paris Sud
URL http://geops.geol.u-psud.fr/
Description
URL Type VIEW PROJECT HOME PAGE
Address (Line1) Laboratory GEOPS, Bât. 509 - Université Paris-Sud
Address (Line2)
City Orsay
Postal Code 91400
Country France
Parameter 0
Category EARTH SCIENCE/CLIMATE INDICATORS/CRYOSPHERE/LAND SURFACE
Parameter Geographical distribution of the thaw slump
Units unknown
Parameter 1
Category EARTH SCIENCE/CLIMATE INDICATORS/LAND SURFACE/EROSION RATE
Parameter Averaged erosion rate
Units meters per year (m/yr)
Parameter 2
Category EARTH SCIENCE/LAND SURFACE/FROZEN GROUND/SOIL TEMPERATURE
Parameter Temperature of the frozen layer (T)
Units degree_Celsius (°C: K @ 273.15)
Datacenter short Name
Datacenter long Name
Address (Line1)
Address (Line2)
City
Postal Code
Country
URL
Description
URL Type
Reference 0
Reference Title Impact of the global warming on the fluvial thermal erosion over the Lena River in Central Siberia
Authors Costard F., E. Gautier, D. Brunstein, J. Hammadi, A. Fedorov, D. Yang and L. Dupeyrat
Publication Date 2007-07-18
Series
Edition
Volume 34
Issue 14
Report_number
Publication Place
Publisher Geophysical Research Letters
Pages
ISBN
DOI 10.1029/2007GL030212
Other reference details
URL
Description
URL Type
Multimedia Thermocirques in central Yakutia. From A. Sejourne, 2012.
Caption Thermocirques in central Yakutia. From A. Sejourne, 2012.
Description A detailed study of significant melting of ice-wedges on hillside slopes of thermokarst lakes in Central Yakutia (eastern Siberia) was performed by A. Séjourné in collaboration with F. Costard and J. Gargani (GEOPS laboratory, Orsay University) and A. Fedorov (Permafrost Institute of Yakutsk). The important melting of ice-wedges could lead to formation of amphitheatrical hollows referred as thermocirques (as seen in the photograph). The melting of ground-ice on the scarp of thermocirque triggers falls and small mud-flows that induce the retreat of the scarp parallel to itself. The evolution of thermocirques in Central Yakutia has been little studied and analyzing their formation could help to understand the recent thermokarst in relation to climate change in Central Yakutia. The project studied the thermocirques with field surveys in July 2009-2010 and October 2012 to examine the processes and origin of melting of ice-wedges and; photo-interpretation of time series of satellite GeoEye images (50 cm/pixel) to study the temporal evolution of thermocirques.
Distribution Format The common format is ASCII. Readme files come with data requests.
Media Email contact
Size
Fees No fees
Data Resolution
Latitude Resolution 50 *(for the Geographical distribution map) cm
Longitude Resolution 50 *(for the Geographical distribution map) cm
Horizontal Resolution Range
Vertical Resolution
Vertical Resolution Range
Temporal Resolution from one hour for the Temperature measurements to one year for the erosion rate
Temporal Resolution Range
Instrument 0
Site Name Yakutia region/Lena river/Central Siberia
Location RUSSIA
Detailed Location The Lena river is one of the largest arctic rivers located in a permafrost environment. At the latitude of Yakustk, the fluvial forms of the floodplain exhibit a large number of shallow and wide channels.
Site Longitude
Site Latitude
Site Altitude
Site Depth
Platform short Name GEOEYE-1
Platform long Name GeoEye-1 high-resolution earth observation satellite
Instrument short Name
Instrument long Name
Instrument Longitude
Instrument Latitude
Network Lons/Lats (Format : lon0 lat0, Lon1 Lat1, ...)
Instrument Altitude
Instrument Depth
Instrument Description
Instrument 1
Site Name Yakutia region/Lena river/Central Siberia
Location RUSSIA
Detailed Location The Lena river is one of the largest arctic rivers located in a permafrost environment. At the latitude of Yakustk, the fluvial forms of the floodplain exhibit a large number of shallow and wide channels.
Site Longitude
Site Latitude
Site Altitude
Site Depth
Platform short Name In situ observations
Platform long Name
Instrument short Name HOBO
Instrument long Name HOBO data loggers
Instrument Longitude
Instrument Latitude
Network Lons/Lats (Format : lon0 lat0, Lon1 Lat1, ...)
Instrument Altitude
Instrument Depth
Instrument Description
Instrument 2
Site Name Yakutia region/Lena river/Central Siberia
Location RUSSIA
Detailed Location The Lena river is one of the largest arctic rivers located in a permafrost environment. At the latitude of Yakustk, the fluvial forms of the floodplain exhibit a large number of shallow and wide channels.
Site Longitude
Site Latitude
Site Altitude
Site Depth
Platform short Name WORLDVIEW-1
Platform long Name WORLDVIEW-1 Satellite sensor
Instrument short Name
Instrument long Name
Instrument Longitude
Instrument Latitude
Network Lons/Lats (Format : lon0 lat0, Lon1 Lat1, ...)
Instrument Altitude
Instrument Depth
Instrument Description
Spatial Coverage
Southern latitude 77.45 degrees
Northern latitude 77.45 degrees
Western longitude -51.06 degrees
Eastern longitude -51.06 degrees
Minimum Altitude
Maximum Altitude
Minimum depth 0 m
Maximum depth 2533.84 m
Paleo Temporal Coverage
Paleo Start Date
Paleo Stop Date
Eon
Era
Period
Epoch
Stage