Kurt Cuffey

Professor and Martin Distinguished Chair in Ocean, Earth and Climate Science
Ph.D. University of Washington, 1999
Research interests: glaciers, climate, geomorphology

Picture of Kurt Cuffey

The global physical environment is a vast and complex machine composed of numerous interconnected systems capable of dramatic change over brief intervals of time. A solid understanding of the character and dynamics of this machine can explain a diversity of engaging geographical phenomena, from the aesthetically stunning views on a high Sierra Nevada mountain summit to the devastating loss of life and property resulting from landslides and floods. The purpose of my scholarship is to design, improve, evaluate, and enjoy such explanations. Two complementary approaches in this pursuit are (1) to achieve a rigorous physically-based understanding of environmental processes and system dynamics, and (2) to reconstruct the remarkable "natural experiments" of Earth's environmental history. I use both approaches.

Constraints on time, technology, and brainpower have forced me, like most scholars, to the bittersweet reality of specialization; my research efforts emphasize environmental change of polar regions, with a focus on glaciologic problems. The choice of polar glaciology reflects the unique and powerful contributions that this subdiscipline makes to environmental change research. Ice core reconstructions of environmental history offer the most comprehensive, varied, and high-resolution view yet achieved of past environments. The ice sheets themselves are a major control on global sea level and albedo, and on high-latitude atmospheric and oceanic circulations, and on physical landscape characteristics. No other topographic features of this size and importance are changeable on such short time scales.

I use a quantitatively rigorous and novel blend of geophysical and geochemical techniques to address questions that are important in this context: How have climatic temperature and atmospheric greenhouse gas concentrations covaried in the past? What is the tempo and magnitude of climate changes in polar regions? What determines the isotopic composition of precipitation? How have the great ice sheets changed in the past, and how will they change in the future? How do they flow? How are microphysical processes in ice manifest at the scale of whole glaciers and ice sheets?

In addition to these major research themes, I also do some work on biogeography and temperate geomorphology. I very much enjoy the breadth and diversity of scholarship in the Berkeley Geography Department (my home department) and also am affiliated with the Department of Earth and Planetary Science and with the Energy and Resources Group.

Photographs

Selected publications

Cuffey, K.M. and W.S.B. Paterson (2010). The Physics of Glaciers, Fourth Edition. Elsevier, 693 pp.  My major update (30% new material plus 40% major revision) of the classic advanced text for students and researchers in glaciology. This book reviews the current scientific understanding of glaciers and includes critical commentary and original analyses of key glaciological topics.  The reference list and a document indicating the page numbers at which citations appear are available online from Elsevier at

http://www.elsevierdirect.com/companion.jsp?ISBN=9780123694614

At this site, too, you will find all of the figures, available as pdf files.

Sanders, J.W., K.M. Cuffey, J.R. Moore, K.R. Macgregor, and J.L. Kavanaugh (2012). Periglacial weathering and headwall erosion in cirque glacier bergschrunds. Geology 40, 779-782. Cirque glaciers erode their headwalls by removing rock material broken by segregation ice formation. The process can, however, be prevented by thermal insulation provided by snow bridges.

Cuffey, K.M. and J.L. Kavanaugh (2011).  How nonlinear is the creep deformation of polar ice? A new field assessment. Geology 39(11), 1027-1030. Confirms that the stress exponent of ice deformation is 3 to 4, and definitely not as low as 2, in actively deforming polar glaciers.

Shuster, D.L., K.M. Cuffey, J.W. Sanders, and G. Balco (2011). Thermochronometry reveals headward propagation of erosion in an alpine landscape. Science 332, 84-88. Quaternary glaciations profoundly altered the structure of topography in the New Zealand Fiordland.

Bliss, A.K., K.M. Cuffey, and J.L. Kavanaugh (2011).  Sublimation and surface energy budget of Taylor Glacier, Antarctica. Journal of Glaciology 57, 684-696. Explores how sublimation controls the mass loss from an East Antarctic outlet glacier.

Cuffey, K.M. (2011).  Antarctic ice flow revealed. Science 333, 1386-1387. In which I have the pleasure of providing commentary on an analysis by Eric Rignot and colleagues.

Sanders, J.W., K.M. Cuffey, K.M. Macgregor, J.L. Kavanaugh, and C. Dow (2010). The dynamics of a temperate alpine cirque glacier. American Journal of Science 310, 753-773. The rotational sliding model does not accurately describe cirque glaciers.

Alley, R.B., J.T. Andrews, J. Brigham-Grette, G.K.C. Clarke, K.M. Cuffey, and 9 others. (2010). History of the Greenland Ice Sheet: paleoclimatic insights. Quaternary Science Reviews 29, 1728- 1756. The Greenland Ice Sheet shrinks when the climate warms.

Kavanaugh, J.L., K.M. Cuffey, D.L. Morse, H. Conway, and E. Rignot (2009). Dynamics and mass balance of Taylor Glacier, Antarctica: 1. Geometry and surface velocities. Journal of Geophysical Research 114, F04010. This paper and the following three report at length on the dynamics, configuration, and stratigraphy of an outlet glacier from the East Antarctic Ice Sheet that terminates in Taylor Valley.

Kavanaugh, J.L., K.M. Cuffey (2009). Dynamics and mass balance of Taylor Glacier, Antarctica: 2. Force balance and longitudinal coupling. Journal of Geophysical Research 114, F04011.

Kavanaugh, J.L., K.M. Cuffey, D.L. Morse, A.K. Bliss, and S.M. Aciego (2009). Dynamics and mass balance of Taylor Glacier, Antarctica: 3. State of mass balance. Journal of Geophysical Research 114, F04012.

Aciego, S.M., K.M. Cuffey, J.L. Kavanaugh, D.L. Morse, and J.P. Severinghaus (2007). Pleistocene ice and paleo-strain rates at Taylor Glacier, Antarctica. Quaternary Research 68, 303-313.

Cuffey, K.M. (2008). A matter of firn. Science 320, 1596. In which I have the pleasure of providing commentary on an analysis by Michiel Helsen and colleagues.

North, G., K.M. Cuffey, and ten others (2006). Surface Temperature Reconstructions for the Last 2000 Years. National Academies Press, 142 pp. In which a panel of experts confirmed some of the criticisms of temperature reconstructions while also explaining why the controversy makes no difference to our understanding of anthropogenic global warming.

Howard, J.K. and K.M. Cuffey (2006). Factors controlling the age structure of Margaritifera falcata in two northern California streams. Journal of the North American Benthological Society 25, 677- 690. This manuscript and the next one report some of the findings from a project about freshwater mussels in northern California rivers.  The intersection of geomorphology, ecology, and hydrology is an exciting area, one that even a glaciologist should explore.

Howard, J., and K.M. Cuffey (2003). Freshwater mussels in a California North Coast Range river: Current status, and hydrologic and geomorphologic controls. Journal of the North American Benthological Society 22, 63-77

Cuffey, K. M. (2004). Into an ice age. Nature, 431, p. 133-134. In which I have the pleasure of commenting on an analysis by the NGRIProject members.

Kavanaugh, J.L., and K.M. Cuffey (2003). Space and time variation of δ18O and δD in Antarctic precipitation, revisited. Global Biogeochemical Cycles 17, 1017. An update and elaboration of conceptual models explaining the determinants of precipitation isotopes in Antarctica.


Cuffey, K.M., and F. Vimeux (2001). Carbon dioxide and temperature covariation from the Vostok ice core after deuterium excess correction.
Nature, 412, p. 523-527. Carbon dioxide and climatic temperature vary in close correspondence over time.

Cuffey, K.M. and S.J. Marshall (2000). Substantial contribution to sea level rise during the last interglacial from the Greenland Ice Sheet.
Nature, 404, 591-594. The Greenland Ice Sheet probably shrank considerably during the last interglacial period.

Cuffey, K.M., H. Conway, A. Gades, B. Hallet, C.F. Raymond, and S. Whitlow (2000). Deformation properties of subfreezing glacier ice: Role of crystal size, chemical impurities, and rock particles inferred from in-situ measurements.
Journal of Geophysical Research, 105(B12), 27895-27915. Several different factors, including the mean size of ice crystals, affect the viscosity of polar glacier ice.

Cuffey, K.M., H. Conway, A.M. Gades, B. Hallet, R. Lorrain, J.P. Severinghaus, E.J. Steig, B. Vaughn and J.W.C. White (2000). Entrainment at cold glacier beds.
Geology, 28(4), 351-354. Geological processes are active at the beds of polar glaciers even at temperatures well below melting point.  The rates are very slow, however.

Cuffey, K.M. and G.D. Clow (1997). Temperature, accumulation and ice sheet elevation in central Greenland through the last deglacial transition.
Journal of Geophysical Research 102(C12), 26383-396. This paper and the next one reveal how major climatic parameters changed over the last 50 thousand years in central Greenland.

Cuffey, K.M., G.D. Clow, R.B. Alley, M. Stuiver, E.D. Waddington and R.W. Saltus (1995). Large Arctic temperature change at the Wisconsin-Holocene glacial transition.
Science 270, 455-458. Climatic warming from the heart of the last glacial period to the present was much larger than previously recognized.

Personal interests

1. Organizations I currently support:

For gay rights: Lambda Legal, ACLU

For the environment: Washington Trails, Sierra Club, Wilderness Society

For science and investigation: Committee for Skeptical Inquiry

 

2. The President of the United States:

Michelle Obama for President.

 

3. Attention young people! Here's what great music sounds like:

Outlaws. The Outlaws (1975).  This is a southern rock band, not a rap group.

Carmen. Georges Bizet, with lead sung by Maria Callas, recorded (1964).

Triumph. The Jacksons (1980).

Trozos de Mi Alma. Marco Antonio Solis (1999).

Eyes of the World. The Grateful Dead, any live version longer than 10 minutes: look it up on YouTube.

Live at the Fillmore. Derek and the Dominos (recorded 1970).

 

4. Some really great passages I found in Proust (Enright/Kilmartin translation):


"From decade to decade their wordy battles are renewed, for it
is not only social groups that are kaleidoscopic but ideas too
about society and politics and religion; refracted through large
bodies they can assume a momentary amplitude but their
life-span is the brief one of ideas which owe their success to
their novelty and gain the adherence only of such minds as
are not particular about proof.
So it is that parties and schools follow upon one another's
heels, attaching to themselves always the same minds, those
men of moderate intelligence who are an easy prey to the
successive enthusiasms into which others more scrupulous
and less easily satisfied in the matter of proof will decline
to plunge."
Time Regained, p. 462

"They thought certainly of these hecatombs of regiments annihilated
and passengers swallowed by the waves;
but there is a law of inverse proportion which multiplies
to such an extent anything that concerns our own welfare and
divides by such a formidable figure anything that does not
concern it, that the death of unknown millions is felt by us
as the most insignificant of sensations, hardly even as
disagreeable as a draft."
Time Regained, p. 342

"The town that I saw before me had ceased to be Venice.
Its personality, its name, seemed to me to be mendacious
fictions which I no longer had the will to impress upon its
stones.  I saw the palaces reduced to their basic elements,
lifeless heaps of marble with nothing to choose between them,
and the water as a combination of hydrogen and oxygen,
eternal, blind, anterior and exterior to Venice."
The Fugitive, p. 222

" `It's the reward of virtue. It's a marriage from the last
chapter of one of Mme Sand's novels,' said my mother.
(`It's the wages of vice, a marriage from the end of
a Balzac novel,' thought I.)"
The Fugitive, p. 228

"My innocence of the alleged crime was never taken into
consideration, for that was the sole hypothesis which nobody
was willing to accept for an instant."
The Fugitive, p. 27

"...physical desire has the marvellous faculty of giving
intelligence its true value and providing solid
foundations for the moral life."
The Fugitive, p. 77

"But in exchange for what our imagination leads us to
expect and we give ourselves so much futile trouble trying to find,
life gives us something which we were very far from imagining."

The Fugitive, p. 80
"There are moments in life when a sort of beauty is born
of the multiplicity of the troubles that assail us,
intertwined like Wagnerian leitmotifs, and also from the
notion, which then emerges, that events are not situated
in the sum of the reflections portrayed in the wretched
little mirror which the mind holds in front of it and calls
the future, that they are somewhere outside and spring up
as suddenly as a person who comes to catch us in the act."
The Fugitive, p. 26-27

"And even if this love leads to disillusionment, it does
at least stir, even by so doing, the surface of the soul
which would otherwise be in danger of becoming stagnant."
The Captive, p. 661

"And that very morning she had told me [otherwise]! I watched
a tongue of flame seize and devour in an instant a novel which I
had spent millions of minutes in writing."

The Captive, p. 819
"Was he alluding to the vice which he had succeeded hitherto
in concealing from the world, but of which he was himself
aware and whose seriousness he perhaps exaggerated, just
as children who make love for the first time,
or merely before that age seek solitary pleasure,
imagine themselves to be like a plant which cannot
scatter its pollen without dying immediately afterwards?"
Time Regained, p. 418

"... we find a little of everything in our memory; it is a sort of
pharmacy, a sort of chemical laboratory, in which our groping hand may
come to rest now on a sedative drug, now on a dangerous poison."
The Captive, p. 856

"Then I told her who I was and at once, as though the sound
of my name had broken a spell and I had lost the look
of an arbutus-tree or a kangaroo which age no doubt had given
me, she recognised me ..."
Time Regained, p. 518

"One was terrified, because it made one think of the vast periods
which must have elapsed before such a revolution could
be accomplished in the geology of a face, to see what erosions
had taken place all the way along the nose, what huge alluvial
deposits at the edge of the cheeks surrounded the whole face
with their opaque and refractory masses."
Time Regained, p. 510

"The writer's work is merely a kind of optical instrument
which he offers to the reader to enable him to discern what,
without this book, he would perhaps never have perceived
in himself."
Time Regained, p. 480

Contact information

525 McCone Hall
Office phone: 510 643-1641
510 642-3370 (fax)
kcuffey@berkeley.edu

Courses

Geography 140A. Physical Landscapes: Process and Form (4 units). Understanding the physical characteristics of the Earth's surface, and the processes active on it, is essential for maintaining the long-term health of the environment, and for appreciating the unique, defining qualities of geographic regions. In this course, we build an understanding of global tectonics, and of rivers, hillslopes, and coastlines, and discover how these act in concert with the underlying geologic framework to produce the magnificent landscapes of our planet. Through our review of formative processes, we learn how physical landscapes change and are susceptible to human modifications, which are often unintentional. Prerequisite: Geography 1 or equivalent.

Geography 140B. Physiography and Geomorphologic Extremes (4 units). In this course we review the physical landscapes and surface processes in extreme environments: hot arid regions, glacial and periglacial landscapes, and karst terrane. Using this knowledge, plus an understanding of tectonics and temperate watersheds (gained from the prerequisite), we explore how unique combinations of geomorphic processes acting on tectonic and structural provinces have created the spectacular and diverse landscapes of North America. Regions to be explored include the Colorado Plateau, Great Basin, Sierra Nevada, North Cascades, Northern and Southern Rockies, Great Plains, Appalachian Highlands, and Mississippi Delta. Prerequisite: Geography 140A.

Geography 200A. Contemporary Geographic Thought (4 units; 3 hours of seminar per week; co-taught with other faculty). The class has three goals. The first is to introduce incoming graduate students to the tremendous range of geographical inquiry and some of the best contemporary work in the field. A second goal is to help students see, think, and write geographically--that is, to make links across space, differentiate places, and connect humans to the earth -- in effect, learning how to interpret our physical and human landscapes. A third goal is to give students a sound basis upon which to judge arguments: to see how theory and evidence are used and misused.

Geography/EPS C241. Glaciology (4 units). A review of the mechanics of glacial systems, including formation of ice masses, glacial flow mechanisms, subglacial hydrology, temperature and heat transport, and global flow and response of ice sheets and glaciers. We will use this knowledge to examine glaciers as geomorphologic agents and as participants in climate change. Prerequisite: working knowledge of Calculus.

Geography 246. Geomorphology of California (4 units). Seminar. Requires two major field trips of four days' duration, each with 12-hour days. Numerous tectonic and Earth surface processes act in concert to produce the physical landscapes of our planet. This course examines three major regions of California (the Sierra Nevada, the Basin and Range, and the Southern Coast Ranges) as specific case studies for demonstrating how landscapes can be understood using concepts from tectonics, geomorphology, and geography. Two four-day field trips and preparatory readings for them will illuminate the integrated action of tectonics, geologic structure and lithology, drainage network development, hydraulics, soil production, hillslope transport, fluvial transport, aeolian transport, and glacial/perigicial processes. A term project will be required. Prerequisite: in-depth knowledge of geomorphology.