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Napolitano, L. G.

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INVESTIGATION TITLE: Land Slides Investigation in
southern Italy (ARDUO PROJECT)
PROPOSAL No.28430
P.I.NNIE: Prof. Luigi G. NAPOLITANO
PROJECT COORDINATOR : Prof. Sergio VETRELLA
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INVLSTIGATION TITLE" :
	
Land Slides Investigations in Southern
Italy ( ARDUO PROJECT )
PROPOSAL No. 23430
P.I. NAME : Prof. Luigi G. Napolitano
PROJECT COORDINATOR : Prof. Sergio Vetrella
I	 - INTRODUCTION
The ARDUO Project is an interdisciplinary program for the
study of land-slides and their connection with ground and
underground water, vegetative cover and slope gradient.
The program is based on the collaboration of the following
Italian Institutes:
- The Institute of Aerodynamics of the Faculty of Engine-
ring of the University of Naples.
- The Institute of Geol.Dgy of the Faculty of Science of
the University of Naples.
- The Institute for the Hydrogeological protection of Sou-
thern Italy of the National Research Council (I.R.P.I.)
- The Geomining Institute of the National Committe for Nu-
clear Energy ( C.N.E.N. ).
Each Institute gives a contribution of men and means, and
financings obtaninod by the National Research Council, by
the National Committee for Nuclear Energy, by the Ministry
od Education and by the European Economic Community.
The Institute of Aerodynamics provides for the distribu-
tion of the imagery of the Landsat-B and for the carrying
out of recurrent meetings to discuss the res , 11ts and to
program the various activities.
--
	 2	 --
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The responsability of the acquisition of the data through
telesensors from aerial platforms ( airplanes and captive
balloons ) is of the Institute of Aerodynamics, and also
the analysis of the data through false-colour and automa-
tic techiques.
Some bureaucratic mistakes have delayed the arrival of the
financings obtained by the National Research Council, cau-
sing a delay also in the realisation of the Arduo Project.
The financing of about 300.000 dollars has been divided in-
to two parts, the former of which arrived about 10 months
ago.
According to the acquisition of the data it has been reali-
zed a multi-spectral System with four HASSELBLAD 500 EL/M
cameras with 40 and &Omm. lens and 70mm. films magazines.
The support is furnished with micrometric screws for the
registration of the axis of the cameras.
The four cameras are controlled by an intervallometer built
by the Institute of Aerodynamics, which records the total
number of photograms for each camera and signalizes the e-
ventual stop of one or more came 'r'as. Apart from the multi -
spectral photographic system, we have bought an Exotech
100 multicanal radiometer acting in the same bands of the
Landsat. The platforms from where these telesensors are
used are a sigle engine 10 OHp Fachiro P-57 Partenavia air-3
plane at maximum altitude level of 15.000 feet and two 14m
captive balloons which can reach a 2000 feet altitude.
On the air plane, the radiometer is used with a Honeynell
recorder and a telecamera put on the same optical axis; on
the captive balloon there are one or two HASSELBLAD as tho-
se already described or a radiometer, togheder with an au-
tomatic Olympus camera, and each thing is controlled from
the ground.
For the photo-interpretation
Sigurd Sorum system, a 7eiss
minous tables atc.
it is used a multi-spectral
and a wild stereoscope, lu-
For the analysis of the digital tapes a 64K CDC 17 compu-
ter is used, ;rith two disks, two tape units, a digigra-
phic, a Calcomp plotter, a card reader and a priting u-
nit connected with a 370 IBM, both property of the Institu-
to of Aerodynamics. With the remaining part of the finan-
cing, arrived in these day:., we will huy an Image Analy-
Wa
I.
--	 3	 --
i
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zer that can precision-expand the images up to 50: 1,
and up to 100: 1 at lesser precision; an interactive
colour viewer and an image digital izer Whic wi11 be
connected to the CDC 17 Computer.
the work done up to now has focalized aver four Ita-
lian regions and precisely over Campania, Calabria,
Puglia and Lazio. Over such zones data regarding the
land-slidea of the last ten years have been gathered
and these eventd have been classified according to a
standard established by Prof. Antonio Vallario of the
Institute of Geology of the University of Naples.
Campaigns of relief have been done"in situ"by the In-
stitute of Geology of Naples in Campania and by the
IRPI in Calabria.
The li,stitute of Geology was represented by Prof. d'Ar-
genio, Prof. Pescatore, Prof. Guzzetta, and other profes-
sors, together with twenty students; the IRPI was re-
presented by Dr. Carrara, Dr. Merenda, other researcher
and technicians of the Institute and group of students.
Over the areas of these two
aerial missions have been c
with multispectral shots of
Gathered data are completed
100.000maps and with aerial
tary Geographic Institute.
Italian region, several
arried out during last month,
the same bands of the Landsat.
with 1:15.000, 1: 25.000, l:
1:33.000 photos of the Mili-
r
Land slides and other useful informations ( vegetation,
trying to establish their birth-date and their evolution,
and reported on various scale maps. After this preparato-
ry work we compare the obtained informations to the enlar-
gement of the photos of Landsat, not less than 1: 250.000.
The results obtained up to now, in this comparison, are
not satisfactory because only in very cases it has been
pos.ible to locate land slides, obtained by photos from
a 1?.000 to a 33.000 scale on the pictures of Landsat.
It may that land slides considered up to now have limited
size, i.e. of about three hundred feet, and also that the
delay of the financings has riot permitted to the researchers
of deepening what they cot and of considering largest land
slides.
Contemporary with the work of photointerpretation, waiting
for the arrival of the instruments, software for the ana-
lysis of the digital tapes of Landsat have been adapted
,r
rr
4	 ---
and developed.
A part of the programs have been formed and
Larsys, others, on the contrary, exploiting
and the digigraphic have directly developed
eher of the Institute of Aerodynamics.
The work already done does not give yet the
of proving any information on the usefulnes
gnetic tapes for the study of land slides.
rI
adopted by
the plotter
by the resear-
possibility
s of the ma-
The researchers think it is necessary a worling period
of about 6 months to be able give more detailed infor-
mations.
III	 ACCOMPLISHMENTS
As we have already said in the previous paragraph, the
data of the Landsat-B have not given yet any significant
results in the field of land slides.
the analysis of the photos of Landsat has anyway the pos-
sibility of studying the structural characteristics of zo-
nes as the Gargano and the Matese and of revising some
cartographical informations on 1: 100.000 maps.
IV PROBLEMS
The graetest problem we met in the development of Arduo
Project was the delay of the arrival of the funds granted
by the National Research Council. This has compelled the
researchers to delay the realisation of the program.
Another problem depends the fact that for each zone exa-
mined we couldn't obtEin more than two photos from Landsat.
This dit not allow the observation of the variation of phe-
nomena in the time and in particular of localize and control
land slides throug a subsequential comparison of the pictu-
res of Landsat. Cesidcs, a!, we already said, most observed
land slide	 can riot be localized at a l: 250.000 scale on
account of their small size, a 1:250.000 scale is the one
generally used.


Land slides investigation in southern Italy (ARDUO project)

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