6/25/2013

IODP・PEP@サンタクルーズ、カリフォルニア

先週、横山先生はIODPのプロポーザル審査会(PEP)@カリフォルニアに参加されました。

ダウンタウンのホテルで4日間、缶詰状態だったそうです。


IODPのPEPは現在の体制が今回で終了することもあり、掘削サイト審査委員会(SCP)と合同でやる新しい取り組みも行われたそうです。





会議後、横山先生はカリフォルニア大学サンタクルーズ校(UC SC)を訪問されました。

同校には、ちょうど卒業生の山口保彦さんが滞在中だったので、キャンパスや現在の住まいなどを案内してもらったそうです。


山口さんと先生。奥の家にルームシェアで4人で住んでいるとのことでした。


家はビーチから1分ほどの好立地!w

一方の大学は山の上だそうですwww


海洋学部の校舎は駐車場から谷にかかる橋を渡った先。





昼食はアメリカならではの巨大なサンドイッチとハンバーガー!!
(体重管理には気をつけてくださいね。)

山口さんとJAMSTEC・高野淑識さん


その後、山口さんを車でサンノゼまで送り、分かれたそうです。

お目当ては…紀伊国屋書店が入った日系スーパーの週刊少年ジャンプwww


山口さんはサンタクルーズに到着間もないので生活をスタートさせたばかりですが、横山先生ががポスドクで2000年にUC Berkeleyで生活をスタートさせたときのような高揚感を感じているようだった、とのことです。

20130625 新着論文(ELSEVIER) 6/17-23

Chemical Geology
1, Stable Sr-isotope, Sr/Ca, Mg/Ca, Li/Ca and Mg/Li ratios in the scleractinian cold-water coral Lophelia pertusa
J. Raddatz , V. Liebetrau , A. Rüggeberg , E. Hathorne , A. Krabbenhöft , A. Eisenhauer , F. Böhm , H. Vollstaedt , J. Fietzke , M. López Correa , A. Freiwald ,

2, Re-Os isotopes and major and trace element geochemistry of carbonaceous shales, Aravalli Supergroup, India: Impact of post-depositional processes
Gyana Ranjan Tripathy , Sunil Kumar Singh , Harsh Bhu

3, Growth-rate induced disequilibrium of oxygen isotopes in aragonite: An in situ study
Rinat I. Gabitov

Geochimica et Cosmochimica Acta
4, Ca isotope fractionation in a high-alkalinity lake system: Mono Lake, California
Laura C. Nielsen , Donald J. DePaolo

Palaeogeography, Palaeoclimatology, Palaeoecology
5, Benthic foraminifera as palaeoenvironmental indicators during the last million years in the eastern Mediterranean inner shelf
Simona Avnaim-Katav , Ahuva Almogi-Labin , Amir Sandler , Dorit Sivan

6, Cenozoic organic carbon isotope and pollen records from the Xining Basin, NE Tibetan Plateau, and their palaeoenvironmental significance
Yunping Chi , Xiaomin Fang , Chunhui Song , Yunfa Miao , Xiaohua Teng , Wenxia Han , Fuli Wu , Jiwei Yang

Quaternary Geochronology
7, Cosmogenic 10Be dating of ice sheet marginal belts in Mecklenburg-Vorpommern, Western Pomerania
Vincent Rinterknecht , Andreas Börner , Didier Bourlès , Régis Braucher

Quaternary Research
8, Paleoclimate and growth rates of speleothems in the northwestern Iberian Peninsula over the last two glacial cycles
Heather M. Stoll , Ana Moreno , Ana Mendez-Vicente , Saul Gonzalez-Lemos , Montserrat Jimenez-Sanchez , Maria Jose Dominguez-Cuesta , R.

Quaternary Science Reviews
9, High-resolution paleomagnetic secular variations and relative paleointensity since the Late Pleistocene in southern South America
Agathe Lisé-Pronovost , Guillaume St-Onge , Claudia Gogorza , Torsten Haberzettl , Michel Preda , Pierre Kliem , Pierre

10, Atmospheric simulations of southern South America's climate since the Last Glacial maximum
Edward W. Pollock , Andrew B.G. Bush

11, A ring-width-based reconstruction of June–July minimum temperatures since AD1245 from white spruce stands in the Mackenzie Delta region, northwestern Canada
Trevor J. Porter , Michael F.J. Pisaric , Steven V. Kokelj , Peter deMontigny

12, 100,000-year-long terrestrial record of millennial-scale linkage between eastern North American mid-latitude paleovegetation shifts and Greenland ice-core oxygen isotope trends
Ronald J. Litwin , Joseph P. Smoot , Milan J. Pavich , Helaine W. Markewich , George Brook , Nancy J. Durika

13, Numerical analyses of a multi-proxy data set from a distal glacier-fed lake, Sørsendalsvatn, western Norway
Jostein Bakke , Mathias Trachsel , Bjørn Christian Kvisvik , Atle Nesje , Astrid Lyså

14, High-resolution variability of the South American summer monsoon over the last seven millennia: insights from a speleothem record from the central Peruvian Andes
Lisa C. Kanner , Stephen J. Burns , Hai Cheng , R. Lawrence Edwards , Mathias Vuille

15, Multiple tree-ring chronologies (ring width, δ13C and δ18O) reveal dry and rainy season signals of rainfall in Indonesia
Karina Schollaen , Ingo Heinrich , Burkhard Neuwirth , Paul J. Krusic , Rosanne D. D'Arrigo , Oka Karyanto , Gerhard Helle

Global and Planetary Change
16, Salinity Drift of Global Argo Profiles and Recent Halosteric Sea Level Variation
Xidong Wang , Guijun Han , Wei Li , Xirong Wu , Xuefeng Zhang

Quaternary International
17, Assessing the impact of climatic factors on potential evapotranspiration in droughts
in North China
Jing Feng , Denghua Yan , Chuanzhe Li , Fuliang Yu , Cheng Zhang


6/19/2013

2013/06/18 New papers (agu,egu,gsa...)


Jouranl of geophysical research: Oceans

1.     Northern North Atlantic sea-surface height and ocean heat content
Sirpa Häkkinen, Peter B. Rhines and Denise L. Worthen
DOI 10.1002/jgrc.20268
          
    2. The relationship between oxygen, nitrate and phosphate in the world ocean based on potential temperature
     Miho Ishizu and Kelvin J. Richards
DOI 10.1002/jgrc.20249

GRL
3. Do Extreme Climate Events Require Extreme Forcings?
Arun Kumar, Mingyue Chen, Martin Hoerling, Jon Eischeid
doi: 10.1002/grl.50657

4. Impact of City Size on Precipitation-Modifying Potential
Paul E. Schmid and Dev Niyogi
doi: 10.1002/grl.50656
5. GRACE Satellites Monitor Large Depletion in Water Storage in Response to the 2011 Drought in Texas
Di Long, Bridget R. Scanlon, Laurent Longuevergne, Alex-Y. Sun, D. Nelun Fernando, and Save Himanshu
doi: 10.1002/grl.50655
Keywords: Drought monitoring, GRACE, soil moisture storage, groundwater storage, NLDAS, GLDAS, Texas

6. Strong relationship between dimethyl sulfide and net community production in the western subarctic Pacific
Sohiko Kameyama, Hiroshi Tanimoto, Satoshi Inomata, Hisayuki Yoshikawa-Inoue, Urumu Tsunogai, Atsushi Tsuda, Mitsuo Uematsu, Masao Ishii, and Daisuke Sasano, Koji Suzuki, and Yuichi Nosaka
doi: 10.1002/grl.50654

7. Linked frequency and intensity of persistent volcanic activity at Stromboli (Italy)
J. Taddeucci, D.M. Palladino,  G. Sottili, D. Bernini, D. Andronico, A. Cristaldi
doi: 10.1002/grl.50652
1) Tracking frequency and relative intensity of Strombolian explosions at Stromboli
2) Frequency and intensity correlate positively when time-averaged over hours-days
3) Rising input of magma/gas at depth raises both explosion frequency and intensity

8. Effect of CO2 inhibition on biogenic isoprene emission: implications for air quality under 2000-to-2050 changes in climate, vegetation and land use
Amos P. K. Tai, Loretta J. Mickley, Colette L. Heald, Shiliang Wu
doi: 10.1002/grl.50650
Effect of CO2-isoprene interaction on air quality by year 2050 is simulated
CO2-isoprene interaction reduces ozone and aerosol sensitivity to climate
Human land use change will become a key driver for future air quality

9. Improved Annular Mode Variability in a Global Atmospheric General Circulation Model with 16-km Horizontal Resolution
Erool Palipane, Jian Lu, Gang Chen, James L. Kinter III
doi: 10.1002/grl.50649

10.Characterizing decadal to centennial variability in the equatorial Pacific during the last millennium
T. R. Ault, 
C. Deser,
 M. Newman, J. Emile-Geay
doi: 10.1002/grl.50647

11. Identification of a widespread Kamchatkan tephra: a middle Pleistocene tie-point between Arctic and Pacific paleoclimatic records
Vera Ponomareva, Maxim Portnyagin, Alexander Derkachev, Olaf Juschus, Dieter Garbe-Schönberg, and Dirk Nürnberg
doi: 10.1002/grl.50645

Geochemistry, Geophysics, Geosystems
12. Ten Years of soil CO2 continuous monitoring on Mt. Etna: exploring the relationship between processes of soil degassing and volcanic activity
Marco Liuzzo, Sergio Gurrieri, Gaetano Giudice, Giovanni Giuffrida
DOI 10.1002/ggge.20196
Key Points:Clear relationship between anomalous soil CO2 degassing and volcanic activity Cycles of CO2 increase-decrease always anticipated the eruptive activity
Brief lava fountaining episodes were preceded by minor increase-decrease cycles

13. A skeletal Sr/Ca record preserved in Dipsastraea (Favia) speciosa and implications for coral Sr/Ca thermometry in mid-latitude regions
Inah Seo, Yong Il Lee, Tsuyoshi Watanabe, Hiroya Yamano, Michiyo Shimamura, Chan Min Yoo and Kiseong Hyeong
DOI 10.1002/ggge.20195

Global biogeochemical cycles
14. Future Arctic Ocean Primary Productivity from
CMIP5 Simulations: Uncertain Outcome, but
Consistent Mechanisms
Martin Vancoppenolle, Laurent Bopp, Gurvan Madec, John Dunne, Tatiana Ilyina, Paul R. Halloran, Nadja Steiner

Climate of the past
15. Contrasting patterns of climatic changes during the Holocene across the Italian Peninsula reconstructed from pollen data
O. Peyron , M. Magny , S. Goring , S. Joannin , J.-L. de Beaulieu , E. Brugiapaglia , L. Sadori , G. Garfi ,
K. Kouli, C. Ioakim, and N. Combourieu-Nebout
doi:10.5194/cp-9-1233-2013
16. Greenland ice core evidence of the 79 AD Vesuvius eruption
C. Barbante, N. M. Kehrwald, P. Marianelli, B. M. Vinther, J. P. Steffensen, G. Cozzi, C. U. Hammer,
H. B. Clausen, and M.-L. Siggaard-Adersen
doi:10.5194/cp-9-1221-2013
 They identify tephra par- ticles and determine that volcanic shards extracted from a depth of 429.3 m in the GRIP ice core are likely due to the 79 AD Vesuvius eruption. The chemical composition of the tephra particles is consistent with the K-phonolitic compo- sition of the Vesuvius juvenile ejecta and differs from the chemical composition of other major eruptions (≥VEI 4) between 50–100 AD.

17. Vegetation responses to interglacial warming in the Arctic: examples from Lake El’gygytgyn, Far East Russian Arctic
A. V. Lozhkin and P. M. Anderson
doi:10.5194/cp-9-1211-2013

6/18/2013

New Papers (2013/06/11-2013/06/17)

Nature
1. Reindeer keep the ground cool
Nature 498, 140 (13 June 2013) doi:10.1038/498140a Published online 12 June 2013
Reindeer herding practices and their effect on vegetation in northern Scandinavia may influence when snow melts in spring.

2. Climate and war: A call for more research
Neil Adger, Jon Barnett & Geoff Dabelko
Nature 498,171(13 June 2013) doi:10.1038/498171b Published online 12 June 2013
The possibility that climate change could be responsible for violent conflict (A. Solow Nature 497,179–180; 2013) is starting to influence how governments frame and react to climate change. 

3. Climate and war: No clear-cut schism
Michael Brzoska & Jürgen Scheffran
Nature 498, 171 (13 June 2013) doi:10.1038/498171c Published online12 June 2013
They are sceptical about the effectiveness of Andrew Solow's proposals for cooling the debate over a possible link between wars and climate change ( Nature 497 , 179 – 180 ; 2013 ).

4. Sea stars shed too-hot arms
Nature 498, 140 (13 June 2013) doi:10.1038/498140c Published online 12 June 2013
Sea stars may use their arms to keep their central cores cool when high temperatures threaten their survival.

5. Brazil: Save Caatinga from drought disaster
Roberto Leonan Morim Novaes, Saulo Felix & Renan de França Souza
Nature 498,170 (13 June 2013) doi:10.1038/498170a Published online 12 June 2013
Whether natural fluctuations in temperature and rainfall or climate change are to blame, the lack of water is killing livestock and destroying crops.

6. Transgenic fish: European concerns over GM salmon
J. Robert Britton & Rodolphe E. Gozlan
Nature 498,171 (13 June 2013) doi:10.1038/498171e Published online 12 June 2013

7. Ecology: Conservation in captivity
Amanda Mascarelli
Nature 498, 261–263 (13 June 2013) doi:10.1038/nj7453-261a Published online 12 June 2013
Zoos provide an opportunity to work on crucial issues of biodiversity while reaching out to the public.

8. Conservation: Spare our restored soil
Johan Six
Nature 498,180–181 (13 June 2013) doi:10.1038/498180a Published online 12 June 2013
The conversion of poor-quality arable lands to grassland has prevented soil erosion and sequestered carbon. A study finds that greenhouse gases will be emitted if these lands return to cultivation, especially if they are ploughed.

9. Barium distributions in teeth reveal early-life dietary transitions in primates
Christine Austin, Tanya M. Smith, Asa Bradman, Katie Hinde, Renaud Joannes-Boyau, David Bishop, Dominic J. Hare, Philip Doble, Brenda Eskenazi & Manish Arora
Nature 498, 216–219 (13 June 2013) doi:10.1038/nature12169 Received03 December 2012 Accepted 08 April 2013 Published online 22 May 2013


Science
10. Redox Heterogeneity in Mid-Ocean Ridge Basalts as a Function of Mantle Source
Elizabeth Cottrell and Katherine A. Kelley
Science 14 June 2013:
Vol. 340 no. 6138 pp. 1314-1317 DOI: 10.1126/science.1233299
Negative correlations between Fe 3+ /ΣFe ratios and indices of mantle enrichment—such as 87 Sr/ 86 Sr, 208 Pb/ 204 Pb, Ba/La, and Nb/Zr ratios—reveal that enriched mantle is more reduced than depleted mantle.

11. On the Trail of Ancient Killers
Ann Gibbons
Science 14 June 2013: Vol. 340 
no. 6138 pp.1278-1282 DOI: 10.1126/science.340.6138.1278
Armed with new methods, researchers are interrogating the DNA of centuries-old pathogens extracted from the bones and teeth of victims.

12. Genome-Wide Comparison of Medieval and Modern Mycobacterium leprae
Verena J. Schuenemann, Pushpendra Singh, Thomas A. Mendum, Ben Krause-Kyora, Günter Jäger, Kirsten I. Bos, Alexander Herbig, Christos Economou, Andrej Benjak, Philippe Busso, Almut Nebel, Jesper L. Boldsen, Anna Kjellström, Huihai Wu, Graham R. Stewart,G. Michael Taylor, Peter Bauer, Oona Y.-C. Lee, Houdini H.T. Wu, David E. Minnikin, Gurdyal S. Besra, Katie Tucker, Simon Roffey, Samba O. Sow, Stewart T. Cole, Kay Nieselt, and Johannes Krause
Science 1238286 Published online 13 June2013 [DOI:10.1126/science.1238286]
The exceptional preservation of M. leprae biomarkers, both DNA and mycolic acids, in ancient skeletons has major implications for palaeomicrobiology and human pathogen evolution.

13. Geophysical Exploration Linking Deep Earth and Backyard Geology
Richard A. Kerr
Science 14 June 2013: Vol. 340 no. 6138 pp. 1283-1285
DOI: 10.1126/science.340.6138.1283
Big Science came to solid-Earth studies when the $400 million EarthScope program offered a sharper view of the interior that could help geologists; it's working, mostly.

14. The Age of Man: A Father Figure
U. Kutschera
Science 14 June 2013: 1287.
In the News & Analysis story “Archaeologists say the 'Anthropocene' is here—but it began long ago” (M. Balter, 19 April, p. 261 ).

15. The Age of Man: Outpacing Evolution
Josef Settele and Joachim H. Spangenberg
Science 14 June 2013: 1287.

16. Water in the Balance
James S. Famiglietti and Matthew Rodell
Science 14 June 2013: 1300-1301.
Satellite data may enable improved management of regional groundwater reserves.

17. Hydrogen Isotopes in Lunar Volcanic Glasses and Melt Inclusions Reveal a Carbonaceous Chondrite Heritage
Alberto E. Saal, Erik H. Hauri, James A. Van Orman, and Malcolm J. Rutherford
Science 14 June 2013: 1317-1320.
Published online 9 May 2013 [DOI:10.1126/science.1235142]
Hydrogen isotope ratios in lunar samples imply a common origin for Earth’s and the Moon’s water.

18. Clarifying the Dominant Sources and Mechanisms of Cirrus Cloud Formation
Daniel J. Cziczo, Karl D. Froyd, Corinna Hoose, Eric J. Jensen, Minghui Diao, Mark A. Zondlo, Jessica B. Smith,Cynthia H. Twohy, and Daniel M. Murphy
Science 14 June 2013: 1320-1324.
Published online 9 May 2013 [DOI:10.1126/science.1234145]
Mineral dust and metallic particles initiate most ice nucleus condensation during cirrus cloud formation.


PNAS
19. Eocene cooling linked to early flow across the Tasmanian Gateway
Peter K. Bijl, James A. P. Bendle, Steven M. Bohaty, Jörg Pross, Stefan Schouten, Lisa Tauxe, Catherine E. Stickley, Robert M. McKay, Ursula Röhl, Matthew Olney, Appy Sluijs, Carlota Escutia, Henk Brinkhuis, and Expedition 318 Scientists
PNAS 2013 110 (24) 9645-9650; published ahead of print May 29, 2013,doi:10.1073/pnas.1220872110
They present marine microfossil and organic geochemical records spanning the early-to-middle Eocene transition from the Wilkes Land Margin, East Antarctica. Dinoflagellate biogeography and sea surface temperature paleothermometry reveal that the earliest throughflow of a westbound Antarctic Counter Current began 49–50 Ma through a southern opening of the Tasmanian Gateway.

20. Multidecadal to multicentury scale collapses of Northern Hemisphere monsoons over the past millennium
Yemane Asmerom, Victor J. Polyak, Jessica B. T. Rasmussen, Stephen J. Burns, and Matthew Lachniet
PNAS 2013 110 (24) 9651-9656; published ahead of print May 28, 2013,doi:10.1073/pnas.1214870110
They show both short-term and long-term climate variability over the last 1,500 y from annual band thickness and stable isotope speleothem data.
Their findings seem to suggest stronger (wetter) Northern Hemisphere monsoons with increased warming.

21. Asynchronous marine-terrestrial signals of the last deglacial warming in East Asia associated with low- and high-latitude climate changes
Deke Xu, Houyuan Lu, Naiqin Wu, Zhenxia Liu, Tiegang Li, Caiming Shen, and Luo Wang
PNAS 2013 110 (24) 9657-9662; published ahead of print May 29, 2013,doi:10.1073/pnas.1300025110
They argue that early warming seawater of the WPWP, driven by low-latitude insolation and trade winds, moved northward via the Kuroshio Current and triggered marine warming along the ECS around 20–19 kaBP similar to that in the WPWP.

22. Present and future global distributions of the marine Cyanobacteria Prochlorococcusand Synechococcus
Pedro Flombaum, José L. Gallegos, Rodolfo A. Gordillo, José Rincón, Lina L. Zabala, Nianzhi Jiao, David M. Karl, William K. W. Li, Michael W. Lomas, Daniele Veneziano, Carolina S. Vera, Jasper A. Vrugt, and Adam C. Martiny
PNAS 2013 110 (24) 9824-9829; published ahead of print May 23, 2013,doi:10.1073/pnas.1307701110
Their global niche models suggest that oceanic microbial communities will experience complex changes as a result of projected future climate conditions.

23. Insights into foraminiferal influences on microfabrics of microbialites at Highborne Cay, Bahamas
Joan M. Bernhard, Virginia P. Edgcomb, Pieter T. Visscher, Anna McIntyre-Wressnig, Roger E. Summons, Mary L. Bouxsein, Leeann Louis, and Marleen Jeglinski
PNAS 2013 110 (24) 9830-9834; published ahead of print May 28, 2013,doi:10.1073/pnas.1221721110
The foraminiferal impacts on modern microbialites, their results indicate that the microbialite fossil record may reflect the impact of the radiation of these protists.

24. Soil biotic legacy effects of extreme weather events influence plant invasiveness
Annelein Meisner, Gerlinde B. De Deyn, Wietse de Boer, and Wim H. van der Putten
PNAS 2013 110 (24) 9835-9838; published ahead of print May 28, 2013,doi:10.1073/pnas.1300922110
They report that drought and rainfall effects on soil processes and biota affect the performance of exotics and natives in plant communities.

25. Regeneration of Little Ice Age bryophytes emerging from a polar glacier with implications of totipotency in extreme environments
Catherine La Farge, Krista H. Williams, and John H. England
PNAS 2013 110 (24) 9839-9844; published ahead of print May 28, 2013,doi:10.1073/pnas.1304199110
Across the Canadian Arctic Archipelago, widespread ice retreat during the 20th century has sharply accelerated since 2004. Their results include a unique successful regeneration of subglacial bryophytes following 400 y of ice entombment.


Nature Communications
26. Carbon dioxide concentration dictates alternative methanogenic pathways in oil reservoirs
Daisuke Mayumi, Jan Dolfing, Susumu Sakata, Haruo Maeda, Yoshihiro Miyagawa, Masayuki Ikarashi, Hideyuki Tamaki, Mio Takeuchi, Cindy H. Nakatsu, Yoichi Kamagata
Nature Communications 4, Article number:1998 doi:10.1038/ncomms2998
They construct microcosms mimicking reservoir conditions (55°C, 5MPa) using high-temperature oil reservoir samples. The results present a possibility of carbon capture and storage for enhanced microbial energy production in deep subsurface environments that can mitigate global warming and energy depletion.