TABLE 4.
KILAUEA EAST RIFT ZONE SO2 EMISSION RATES - TRIPOD-BASED - 1995-1997


DATE      SO2(mt/d)WS(m/s) WD     N     SD    LOCATION   EMISSION SOURCE        PLUME DIST. BY:            DATA CODE

09/04/95  350      6.1     20     8     140   V          PU/UTS                 Flown under similar winds  C
09/05/95  820      4.9     85     7     200   V          PU/UTS                 Flown under closest winds  C
09/06/95  680      4.5     85     10    150   V          PU/UTS                 Flown under closest winds  C
02/02/96  1390     5.4     10     6     390   STC        PU/UTS                 flown                      B
05/02/96  460      3.1     212    11    120   N of PU    PU/UTS (kona winds)    air photo                  C
05/31/96  740      6.4     35     15    230   STC        PU/UTS                 flown                      A
05/31/96  780      4.3     35     6     80    V          PU/UTS                 flown                      B
06/06/96  770      7.0     25     6     170   STC        PU/UTS                 flown                      B
06/06/96  620      4.5     37     10    80    V          PU/UTS                 flown                      B
10/24/96  290      5.7     26     7     80    V          PU/UTS                 flown                      A
10/29/96  540      5.7     19     10    70    STC        PU/UTS                 flown                      A
10/30/96  590      5.3     63     6     140   V          PU/UTS                 flown                      C
11/19/96  670      8.3     5      20    190   STC        PU/UTS                 flown                      C
11/21/96  2        8.3     12     13    5     S of V     skylight S of V        paced                      A
01/16/97  30       3.4     196    7     5     V          skylight NW of V       air photo                  C
01/16/97  10       2.8     204    9     3     V          skylight W of V        Pace/estimate              B
01/30/97  260      6.4     40     7     30    Napau      Napau EE 54 fissures   Flown                      A
01/30/97  90       6.3     30     6     10    V          PU/UTS                 Flown                      B
01/30/97  15       6.5     25     5     5     V          skylight W of V        Pace/estimate              B
01/31/97  80       3.6     50     3     30    Napau      Napau EE 54 fissures   Pace/estimate              C
03/21/97  30       4.4     110    4     20    V          PU/UTS                 Flown                      C
03/21/97  50       4.5     100    6     20    W of V     skylight NW of V       Flown                      C
03/21/97  5        4.3     110    3     1     SE of STC  W flank PU             Pace/estimate              C
06/13/97  620      7.2     50     9     130   NW of V    SW flank PU            Flown                      C
06/13/97  130      7.2     55     2     2     NW of V    PU                     Flown                      C
11/04/97  300      8.5     5      24    80    SW of V    PU/UTS                 Flown                      C


                                                                                Abreviations:
                                                                                WS=wind speed,  WD=wind direction
                                                                                N= number of traverses
A - Best quality data - with distance to plume less than 1 km,                  SD=standard deviation,  Dist.=distance
and good constraint on measurement of distance; steady wind                     EE=eruptive episode
direction resulting in COSPEC angle consistently orthogonal to plume.           PU = Pu`u `O`o
B - Good quality data - somewhat longer distance to plume from                  UTS = upper tube system
measurement site; may have variable wind conditions resulting in COSPEC         V=Vince site
angle occasionally non-orthogonal to plume.
C - Acceptable data - may have used indirect method to estimate distance
to plume; measurements may have been made under less consistent wind conditions.
Local terrain and increased plume distance may compromise measurement geometry.