Friday, May 25, 2012

4740.txt

date: Thu, 31 Oct 1996 18:38:43
from: Andrey.SalamatinatXYZxyz.ru
subject: Abstract submission
to: mscarlett@peg.apc.org, convnet@peg.apc.org, p.jonesatXYZxyz.ac.uk

IAMAS/IAPSO Secretariat
Convention Network
224 Rouse Street
Port Melbourne Victoria 3207
AUSTRALIA

E-mail: mscarlettatXYZxyz.apc.org
convnetatXYZxyz.apc.org
p.jonesatXYZxyzt-anglia.ac.uk

November 1, 1996

Dear Organizing Committee,
Dear Prof. Phil Jones:

Please find enclosed into this message a repeatedly sent the Notice
of Intention to Attend and the Abstract Submission Form for a
presentation at the Symposium JMP17. The file containing the abstract
in the Microsoft Word format is also attached.

I would be much obliged if the Organizing Committee could respond by
a confirmation, confirming that the materials are acceptable for
consideration.

I would also request to inform me in what way and to what address I
could apply for a supporting grant to cover my travel and living
expenses to participate in the Symposia.

Sincerely
Andrey N. Salamatin
Professor
Kazan State University
Russia

**********************************************************************

NOTICE OF INTENTION TO ATTEND

Professor
Surname: SALAMATIN
Given Names: ANDREY
Organization: Kazan State University
Department: Department of Applied Mathematics
Position: Professor
Address: Kazan State University, 18, Lenin Street, KAZAN
State (Republic): Tatarstan, Post Code: 420008, Country: RUSSIA
Tel.: (7)(8432)31-84-45, Fax:(7)(8432)38-09-94, 38-74-18
E-mail: Andrey.SalamatinatXYZxyz.ru

I am interested in a scientific tour:
Seminar on Antarctica & Global Change
- Hobart, Tasmania - Australia (13-19 July, 1997)

**********************************************************************

ABSTRACT SUBMISSION FORM
Page 1

Abstract Title: Temperature Change During the Last Climate
Transition in Central Antarctica as Deduced
from Borehole Temperature and Isotopic Record
at Vostok Station
Corresponding Author's Name: Andrey N. Salamatin
Contact Address: Kazan State University, 18, Lenin Street
City: KAZAN, State(Republic): Tatarstan, Post Code: 420008,
Country: RUSSIA,
Tel.: (7)(8432)31-84-45, Fax: (7)(8432)38-09-94, 38-74-18
E-mail: Andrey.SalamatinatXYZxyz.ru

I would like to present my paper in Symposium:
Palaeoclimate in the Southern Hemisphere - JMP17

I would prefer my presentation to be ORAL.

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--
Page 2


Temperature Change During the Last Climate Transition
in Central Antarctica as Deduced from Borehole Temperature and
Isotopic Record at Vostok Station

Andrey N. Salamatin
Kazan State University, Kazan, Russia

Vladimir Ya. Lipenkov, Nartsiss I. Barkov
Arctic and Antarctic Research Institute, St.Petersburg, Russia

Temperature measurements in deep boreholes drilled at Vostok Station
(East Antarctica) have provided the ice-sheet temperature profile
down to a depth of 2700 m. The accuracy of the data is sufficient to
analyze perturbations induced by the recent climate history and to
calibrate isotopic paleothermometer. A special mathematical model and
computer system are developed to infer the main Milankovitch
components of temperature climatic oscillations on the glacier
surface in the past directly from the temperature - depth curve.
The ratio between ice-core deuterium content and cloud
temperature fluctuations (at the top of the inversion layer) is also
verified by fitting the simulated and measured present-day borehole
temperature profiles. It appears that this value may be about 5.8-6.5
permil/C, i.e. approximately 30% lower than the conventional estimate
(9 permil/C) derived from the contemporary spatial distribution of
isotopes over the Antarctic ice sheet. At the same time it becomes
evident that the surface temperatures responsible for the thermal
state of the glacier body does not proportionally follow the inversion
temperatures. The precession climatic oscillations in the inversion
strength undergo additional selective amplification which makes the
early Holocene temperatures on the ice- sheet surface warmer and the
glacial temperatures lower than it was thought before. To understand
this effect one should take into account the fact that the positive
difference between the mean annual inversion and surface temperatures
is mainly a seasonal (winter) phenomenon. Hence, the relatively high
amplitude of the precession component in the surface temperature
oscillations in comparison with the one of the inversion temperature
may be just a direct consequence of an essentially stronger precession
signal in the seasonal temperature response to orbital forcing than in
the mean annual temperature variations in the atmosphere for Central
Antarctica.
The glacial - interglacial temperature increase over Central
Antarctica was determined to be about 15C in the ice-sheet surface
temperature shifting from -69.6C during the Last Glacial Maximum (20-
22 kyr BP) to -54.6C in the Holocene Optimum (8-10 kyr BP) with the
early Holocene temperatures on the surface 3.3C warmer than the
present-day level -57.9C. The corresponding increase in the inversion
temperature was about 9C. All these estimates are noticeably larger
than it has been previously indicated and are much closer to the
revised palaeotemperature changes (21-22C) recently reconstructed from
the GISP and GRIP ice-core isotope records in Greenland.

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